Synth modules

Notes: Another iconic Buchla module gets the Eurorack reissue treatment courtesy of TipTop. The 242t is the brand's unique voltage-controlled clock and trigger module, generating pulses based on a 4x12 matrix.

Supplier's Notes:
The Buchla and Tiptop Audio 242t Programmable Pulser is a reissue of the time-event-based generator from the 1970s 200 series. At its center is the Pulser, a voltage-controlled clock oscillator with a wide frequency range, extending up to audio frequencies, numerous outputs, and start/stop controls. The Pulser drives a programmable matrix with three rows of up to 12 stages: (A), (B), and (C). Stages are activated using the X/Y coordinate controls, and the total number of stages can be set using the (n) row. Clock and Reset inputs allow the 242t to sync with other devices, while the Reset input can also be used to control the number of stages with external pulses.

Notes: Great value from Xaoc's pingable dual VCA, capable of creating organic, acoustic-style decay curves which replicate the dynamics of real-life instruments. Ideal for processing audio as well as CV.

Supplier's Notes:
Xaoc Devices Lublin is a high-quality dual VCA module with exponential CV inputs. On top of that, its two identical channels feature additional inputs for pinging. These inputs use an elaborate analogue circuit to model the dynamic behaviour of vactrols, allowing you to trigger a carefully crafted gain response that mimics the natural decay of plucked and struck acoustic instruments. Unlike lowpass gate modules though, Lublin reduces gain while retaining the full frequency bandwidth, so it is perfect for harmonically rich signals, like our Odessa additive VCO. The vactrol-like behaviour is just a starting point as the envelope may be varied within a wide range using a switch (natural, shortened and prolonged response) and a potentiometer, so you are not stuck with one decay characteristic. Therefore, you can use it not only to create bongos, but also for fat compressed kicks! The built-in gain control circuit (saturating CV instead of the audio signal) prevents distortion from excessive amplification. Lublin is DC-coupled, so you can use it to process CV as well as audio signals.

Width 6HP, Depth 33mm (including cable bracket)
40mA/-20mA

Notes: The MetaModule Audio Expander (MetaAIO) adds an additional 6 CV/Audio inputs and 8 CV/Audio outputs to your MetaModule patches, via a ribbon cable connected to the main MetaModule. The MetaAIO provides the same high-quality as the MetaModule's Audio/CV jacks (24-bit, 48kHz default, up to 96kHz).

Notes: For anyone who has ever struggled with finding their way around a Eurorack synthesiser on a dark stage or a dimly lit studio, Dim 2 presents an illuminating experience. In just 4 HP, it provides a complete solution to upgrade your modular system with a pair of dimmable console lights.

The high-efficiency PWM dimmers run at high frequency, ensuring flicker-free and noise-free operation. Additionally, extensive line filtering keeps your Eurorack power supply happy and clean.

Not limited to just manual control, both dimmers also feature control voltage (CV) inputs, turning the connected lamps from simple light sources to voltage controlled audio-visual spectacles.

While the use of the included BNC LED lamps is recommended in order to keep power consumption low, halogen lamps may be used as well. Provided your power supply is beefy enough, up to 6 W of power may be drawn from each output. This even makes it possible to drive 12 V LED strips, truly making your patches shine bright.

4 HP | +12: 150 mA, -12: 5 mA | JORD2

Notes: The mmMidi is a simple & compact MIDI interface for your Eurorack synthesiser. It translates two independent channels of MIDI note, velocity and gate information to corresponding control voltage signals via either a classic MIDI DIN type connection or as a driverless USB MIDI device.

The mmMidi also converts MIDI Clock to analogue x24 fixed clock and run outputs (i.e DIN Sync). The optional mmT expander provides a third MIDI channel of 8 key mapped gate outputs.

Requiring minimal configuration and a pain free set up, the mmMidi makes it easy to sync Pam's clock to your DAW, control multiple synth voices, and trigger drum or sample modules with the optional mmT expander. The new USB-C connection makes it easy to drive your modular not just from your computer but also via your tablet, phone or any USB MIDI Host.

(Note: New 2025 mkII version adds USB-C functionality.)

Technical Specifications

Power: +12V 50mA / -12V 0mA
Size: 4HP
Depth: 38mm
MIDI response latency: 200-400 uSec
Resolution: Factory calibrated 12 bit 0-8V CV outputs. +5V gates

Notes: Introducing the HATS909, part of TipTop's new series of drum modules that brings those classic percussion sounds into the modular synth world, instantly turning your system into a self-contained music machine.

The HATS909 is the TR-909's original Closed and Open Hi-Hats circuits adapted for use in Eurorack modular synthesizer format and was designed to sound like a machine coming fresh off the assembly line back in the 80's. Improving on the original, TipTop have added some great new features that expand the sound palette that can be produced with this small, powerful module.

The original TR-909 circuit is made with a combination of low-fi sound samples that pass through a series of analogue elements to provide envelope and filtering to the source sound. The HATS909 module allows for manual and voltage control of the sample's tuning, which provides anything from crushed hats and short ticks to the original sound and anything between. Additional controls allow you to send a voltage control signal to either the tune input or the internal VCA for modulation with external control signals and, using a modulation switch, add AM or FM synthesis in the audio range from external oscillators, other drum sounds, or just about any other sound source. Lastly, HATS909 also offers a switch that allows you to tap directly into the raw output of the module for a unique sound source that can used throughout your system.

Just like the other drums in this series, the HATS909 high-powered output gain stage allows you to further harmonize the sound through distortion and clipping. On each gate input, Tiptop have designed a dual pulse-shaper circuit so you can trigger your HATS909 with trigger/gate signals from step sequencers, clock dividers, or any other pulse/clock sources.

TR-909 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 36mm
Power: +12V 33ma / -12V 22ma

Notes: ST.FONT is a stereo liquid filter that takes the beloved core of our FONT module and expands it into a powerful stereo filtering tool.

With a dual filter core (one for each channel), it offers a massive liquid sound with smooth resonance, adding warmth and depth to any audio signal.

Independent filter cores for left and right channels with Low Pass, Band Pass, and High Pass modes, plus seamless crossfading between filter outputs.

Built-in VCA with soft clipping for rich sound shaping, plus CV control.

Switch between Mild for traditional resonance or Wild for extreme distortion and aggressive filtering.

Dedicated FREQ Span, RES Span, and MODE Span knobs allow you to create a wide, immersive stereo field by adjusting the spread of parameters across both channels.

Notes: A spectral processing playground.

Bandit is a fun combination of band-pass filters, VCAs, and routing options.

It serves multiple functions including equalizer, crossover, multiband VCA, 4 band spectral mixer, and spectral external FX insert point.

It allows you to:

Cut or emphasise different frequency bands of a signal, acting as a voltage-controlled equalizer/isolator.
Split a sound into four different frequency bands for external processing, and if needed, insert them back
Mix four different signals with predefined tone placement in the mix.
Create four different sounds from one sound source by modulating the volume with four different envelopes.
Create evolving timbres by modulating one or more frequency bands using LFOs or audio-rate modulation.

Specs

Current needs: +12V: 80mA, -12: 70mA, 5v:0
Width: 8 HP
Depth: 30mm (including power connector)

Notes: Emulate the nostalgic sounds of old audio equipment with the 2hp Lo-Fi. Finding inspiration in quirks and happy accidents found in audio devices of the past, Lo-Fi can take any sound and give it the magic of tasteful degradation.

Lo-Fi carries two degradation modes: Analog and Digital. In the analogue mode, control the amount of wow and flutter for anything from subtle to dynamic pitch fluctuations, tickle the sonic spectrum with ASMR hiss and crackles, and warm up the coldest sounds with tape compression and saturation. In digital mode, dial in BitCrush amount, sample-rate reduction, and the wildest distortion in 2hp to cover your sound in digital crunch, or emulate blown out speakers.

With CV control over each function, and an ultra-crisp audio pass through, take your patch from hi-fi to lo-fi at a moment's notice. Get reel with the 2hp Lo-Fi!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Swarm is a hyper-oscillator capable of an array of patch-filling sounds. Create super-saws, tonal noise hurricanes, and thick bass and lead lines.

Swarm is comprised of a large set of oscillators (up to 88 voices!). Control the number of available oscillators with the Voices control, and dial in the desired amount of pitch variance across the voices with detune. Take Swarm's oscillators from a rich thickening of sound to atonal chaos in the turn of a knob! Swarm also provides macro pitch control with the Freq knob, which also tracks 1v/oct through its CV input. A waveform toggle is also available for switching between sawtooth and pulse waveforms, expanding the timbral palette Swarm offers! Design pumping trance leads, minimoog style basslines, and more with Swarm!

Tech Specs:

Width: 2HP
Depth: 45mm
Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Really nice approach to sequencing from Omni-Tone. The Melodi generates 'semi-random' patterns based on tunable parameters and probabilities. Dial in combinations of scales, pitch range, tempos and so on to create unique melodies.

Supplier's Notes:
Melodi generates sequences based on the mood you set so you can create the sound you're searching for- it can be tweaked to create anything from a powerful bassline to a sparkly melody.

Ships with version 2 of firmware

Improvements: Skip, tie, length are now LIVE knobs. Added a ping-pong trend line and a blues scale.

GENERATE

1. NEW - will prompt Melodi to generate a new sequence.
2. TRIGGER IN - accepts a trigger to prompt Melodi to generate a new sequence.

CYCLE

1. ON/OFF - determines if the sequence will loop or require retriggering.
2. TRIGGER - button and jack trigger the sequence to restart at the beginning.

TUNE

* While adjusting tunable parameters, the light bar will reflect the current selection. For continuous parameters the light bar shows amount from 0-100%, for quantized parameters the light bar shows steps.
1. SKIP (continuous) - sets the probability that a note will be skipped in a sequence.
2. PLUCK (continuous) - sets the length of the gate, from short plucks to gliding between notes (portamento).
3. TIE (continuous)- sets the probability that a note gets tied to the next (effectively making the note last two clock cycles).
4. TREND (continuous) - sets whether the sequence trends upwards or downwards in pitch.
5. SCALE (quantized) - select the quantization of the notes used in the sequence. Choose from perfect notes, pentatonic scale, diatonic scale, chromatic scale and completely unquantized.
6. RANGE (continuous) - sets the range of notes from 1 to 4 octaves (unquantized)
7. LENGTH (quantized) - select the number of notes to play in a sequence (from 1-16, or infinitely generating at the max position).
8. SPEED (continuous) - sets the tempo of the internal clock, between 20 and 2000 BPM.

OUT
1. GATE - outputs the gate of the notes in the sequence.
2. PITCH - outputs the pitch (in V/OCT) of the sequence.

CLOCK

1. SELECT - Melodi will generate internal clock signal if select switch is up, and will use external clock signal when down
2. IN - connect external clock signal
3. OUT - output clock signal

Technical specs:

- Module Size: 3U X 8HP X 25 Mm Deep.
- Current Draw: 85mA @ 12V, 10mA @ -12V.

What's in the box:

- Ready to use Assembled Module
- Mounting Screws
- Power Cable
- User Manual

Notes: The Mutant Rimshot is a fully analogue rimshot and clave generator inspired by the rimshot found in the legendary 909 drum machine; a triple bridged-T oscillator coupled with a state variable filter. The clave sound (not a feature of the original 909 rimshot) is achieved by using just one of the oscillators.

Features

Three oscillator modes

Rimshot HI mode brings classic rimshot sounds
Rimshot LO gives a lower pitch range; try playing with the filter on this setting to get low tom and kickdrum sounds.
CLV (Clave) mode uses just one of the oscillators to give you a brighter, higher percussive sound.
A switch on the back lets you select between original and extended pitch modes. Original mode can give you rimshots exactly modelling that of classic machines (in Hi mode), whereas extended mode gives a wider range of pitch, at the expense of classic accuracy.

Three filter modes

Use the lowpass or highpass filter modes for classic sounding rimshots
Highpass and bandpass can give a wider range of clave and rimshot sounds, as well as completely different percussive elements (especially when turning the resonance up!)
VCF IN lets you blend the clave or rimshot with other sounds. Try adding some filtered noise for a more acoustic sounding rimshot, or for pseudo-snare type sounds.

Novel decay and filter mod controls

The MOD DECAY envelope controls the decay of the VCA envelope
The VCF MOD attenuverter allows you to modulate the filter cutoff with the MOD DECAY envelope
Alternatively, a switch on the back lets you modulate the filter cutoff with the pitch-controlled internal VCO, for filter FM style percussive hits.

Technical specifications

Width: 8HP | Depth: 30mm
Current draw: +45mA, -50mA @ 12V

Notes: DASSBRUM is a powerful kick module capable of producing a wide variety of sounds, ranging from classic kick tones to complex folded timbres. It features an analogue core processed through a digitally controlled matrix of analogue wave folders and envelopes, offering deep sonic flexibility in a compact 8HP form factor. A built-in sweet spot mode ensures optimal pitch envelope relationships for consistently punchy and dynamic kicks.

Consumption: 120mA +12V /30mA -12V
Width: 8HP
Depth: 29mm

Inputs maximum ratings
Fold type (rear switch): 0/5V
Trigger IN: 5V (>0.5V)
Other inputs: -5/10V

Notes: Emulate the nostalgic sounds of old audio equipment with the 2hp Lo-Fi. Finding inspiration in quirks and happy accidents found in audio devices of the past, Lo-Fi can take any sound and give it the magic of tasteful degradation.
Lo-Fi carries two degradation modes: Analog and Digital. In the analogue mode, control the amount of wow and flutter for anything from subtle to dynamic pitch fluctuations, tickle the sonic spectrum with ASMR hiss and crackles, and warm up the coldest sounds with tape compression and saturation. In digital mode, dial in BitCrush amount, sample-rate reduction, and the wildest distortion in 2hp to cover your sound in digital crunch, or emulate blown out speakers.

With CV control over each function, and an ultra-crisp audio pass through, take your patch from hi-fi to lo-fi at a moment's notice. Get reel with the 2hp Lo-Fi!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Introducing the CYMBL909, part of Tiptop's new series of drum modules that brings those classic percussion sounds into the modular synth world, instantly turning your system into a self-contained music machine.

CYMBL909 is a dual voice module containing the TR-909's original Crash and Ride circuits adapted for use in Eurorack modular synthesizer format and was designed to sound like a fresh machine coming out of the assembly line back in the 80's. On top of the original, Tiptop have added some great new features that expand the sound palette of what can be produced with these two voice circuits.

The original circuits use a combination of low-fi 6-bit sound samples that pass through a series of analogue elements that provide envelope and filtering to the source sound. The CYMBL909 module adds manual and voltage control of the sample's analogue tuning section creating tones which range from heavy industrial at the low end, to the original crash/ride sound at the mid range, and bright hats-like sounds at the top end. Modulating the tune with an envelope, CV sequencer, or LFO makes interesting sound bending effects, which can be applied either in or out of sync with the triggering of the sounds.

Just like the other drums in this series, the CYMBL909 high-powered output gain stage allows you to further enhance the sound through distortion and clipping. Tiptop have designed a dual pulse-shaper circuit on each gate input so you can trigger your CYMBL909 with trigger/gate signals from step sequencers, clock dividers or any other pulse/clock.

TR-909 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 46mm
Power: +12V 60ma / -12V 40ma

Notes: Reverse-engineered from the original machine, the BD909 is an identical recreation of the original all-analogue drum circuit of the TR-909. Tiptop have added additional controls and synthesis features that turn this classic circuit into a chest-pounding analog bass drum laboratory - all tightly packed into an 8HP module. The BD909 sound differs from the BD808 in that the main sonic energy is centered in the mid to low frequency range (as opposed to the low frequency range of the BD808). This frequency range gives the needed headroom allowing your bass lines to deeply fill up the low end while the kick drum rides on top - creating a clear and punchy mix.

The BD909 includes all the controls found in the original: Attack, Decay, Tune Decay, Accent, and Level. Tiptop have gone beyond that and added controls that further increase the palette of sound this circuit is capable of. First off, a tuning control knob has been added for the oscillator and included its own CV input and attenuator that let you tune the 909 kick with your bass lines. Next, control knobs have been added for the tuning attack and extending tuning decay. Each one affects the other, allowing for intuitive and interactive sound shaping, opening Z8000 up numerous "sweet spots" and provides the ability to center the energy peak at different parts of the sound. Finally, Tiptop have offered additional punch and distortion by giving complete control over the internal waveshaper, which allows you to overload the waveform manually or with voltage control.

Beginning with the classic and pure sound of the 909 kick, these additional functions greatly expand the BD909's flexibility and let it create powerful analogue bass drums that range from soft and smooth to punchy and aggressive - and everything in between.

TR-909 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 36mm
Power: +12V 34ma / -12V 21ma

Notes: What do you get when you combine voltage controlled distortion and one of the most infamous bassdrums? Hexinverter took one of the most revered bassdrum synthesis designs of all time - the TR-808 and completely redesigned it for use in a modular analogue synthesiser.

13HP
30mm deep
+55mA, -45mA
Eurorack format module

Notes: The P8S8 controller is for those who love those little sliders. The sliders behave like regular pots, so we named the module P8S8 (the "S" stands for the switches).

The P8S8 has eight Alpha sliders with a range of 20 mm. As a speciality the sliders contain LEDs. Their brightness can be controlled and used for any purpose. As long as you don't use the LED registers, the brightness of the LEDs reflect the current slider positions.

At the bottom the P8S8 has eight 3-way toggle switches.

As always in the DROID universe, it can be patched as whatever comes to mind, but looking at this module, it's almost imposing to be used as modulation sequencer or ADSR controller.

Shipping includes a short ribbon cable for connecting the controller to the master or to the previous controller. If you want to place the controller further away from the master, you can purchaser longer ribbon cables here in the shop.

Current Draw: 20 mA +12V, 0 mA -12V, 0 mA 5V
Width: 8 HP
Depth: 25 mm

Notes: Programmable Volt/Octave CV calibrator and transposer

Clever four-channel utility module designed to make it easier to achieve perfect oscillator tracking and transpose CV signals. Also includes some neat quantising and portamento features.

The CalTrans solves issues encountered when playing tonal music with a modular system: tracking problems, curves unrelated to Volt per octave ratio, limited octave range, cumbersome transpose, ...

The CalTrans corrects and expands the range of troublesome VCOs and brings V/Oct tracking to anything that oscillates.

Besides calibration, the CalTrans offers live play features. Each channel can be quantized and any combination of them transposed jointly.

A pair of rotary encoders with detent allow an precise selection of octaves and semitones.

VCOs whose tracking doesn't go high enough to follow the leader will see their pitch repositioned in their highest possible octave so that the global harmony is unaffected.

You can add a pinch of portamento and glissando to each channel and save the whole in user presets.

Firmware 1.17 offers:
* User editable input scaling to match sources that don't generate perfect 1V per octave signals.
* Complete rewrite of the main processing with higher precision.
* ... and the unavoidable fixes and tweaks ;-)

The updated user manual 1.4 is much expanded with operations described in exquisite details :-)
.. and a version 1.5 corrects a mistake in the input calibration description and eases the reading elsewhere.

Dimensions
6 HP
36 mm deep

Current Draw
44 mA +12V
8 mA -12V
0 mA 5V

Notes: The SetonixSynth Marsupial is a new dual filter design based around the re-issued AS3350 filter IC, originally used in rare synths such as the Synton Syrinx, Crumar Spirit and Rhodes Chroma but never widely utilized. Normalization between the control inputs and a Series/Parallel switch makes it simple to dial in a huge variety of unique and musical filter sounds.

Current draw: 36mA @ +12V; 35mA @ -12V

Eurorack width/depth: 8hp; 25mm

Notes: Capture the iconic sound of tape sliding to a halt with Tape Stop, a clock syncable tape stop module that puts this classic effect at your fingertips. Originally an accidental artifact of analog tape, this effect has become a beloved tool in music genres from hip-hop to IDM. Now, it's fully controllable in your modular system.

Adjust the Lag to set the stop length, then tap Trig to activate. Hit it again to resume your audio seamlessly. With clock sync, your stops and starts stay perfectly in time, and a toggle lets you switch between momentary and latching Trig modes. Add a touch of tape magic to your modular system with Tape Stop!

Notes: Catena is a control voltage powerhouse, packing in four channels of attenuation and offsets, two VC slew engines, half and full wave rectification, input voltage doubling and switchable voltage reference sources with an external offset input. As well as the standard cascading offset and polarisation utilities, the module can act as a percussive envelope generator or sidechain ducker, slow lag or glide control, waveshaper and mixer. Four channels of attenuators or attenuvertors are chained together, running from left to right, with an additional alternative mode per channel. The channel functions are chosen using a three-way slide switch above each control pot. Alternative modes use attenuvertion at the preamp stage allowing the modified signal to be polarised.

Alternative Modes

CH 1: Percussive Slew

CH2: Lazy Slew

CH 3: Half Wave Rectification (with gain boost)

CH 4: Full Wave Rectification

VREF Control

With no CV input patched, each channel generates +-5V or +-10V depending on the attenuvertor and VREF Switch position. The switch toggles between +5V and +10V precision voltage references. All Inputs and outputs soft clip at +-10V.

Slew Controls

CH 1 & 2 in the alt (slew) modes can have the slew response switched between tight and loose. There is further CV control via the CV input jack.

Offset Control
The pot controls the additional VREF amount added to CH 2, 3 & 4. With a CV input patched the pot controls an external signal input amount.CH 1 can also be offset by shifting a jumper on the rear panel.

Signal Doubler

Instead of unity gain as per the other channels, CH 4 doubles the input gain of a patched signal, but keeps any chained or offset signals at unity gain.

Mixer

High quality OPA op amps are used throughout, and Catena will happily serve as a mixer for 1-4 channels of audio. A five channel mixer is also possible by adding an audio signal to the offset jack.

Specifications

Intellijel 1U format
Width 28HP
Depth 34mm
Power requirements ~80mA +12V/~80mA -12V
Control voltage range +-10V
Impedance Input 100K / Output 1K

Notes: Introducing the HATS808, a drum module that brings the classic TR-808 closed and open hi-hat sounds to the Eurorack modular synth format. This module includes features like independent accent levels, a high-powered gain stage, dual input pulse-shaper, and adjustable Filter Q and VC-Q knobs for additional tuning.
The HATS808 uses six analogue square wave oscillators to create its signature sizzling sound, maintaining the unique metallic character of the original. The original "choke" circuitry is fully implemented but can be disabled if needed. The high-powered gain stage allows for further sound harmonization through distortion and clipping. The dual pulse-shaper circuit ensures consistent sound quality from any pulse source, making the HATS808 an easy and powerful addition to any modular synth setup.

TR-808 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 14mm
Power: +12V 30ma / -12V 25ma

Notes: Motion Pictures

(Delay And Reverb)

Motion Pictures combines lush delay and reverb with intuitive, powerful controls within a 10HP module. Choose between a crisp digital delay or a warm analogue delay and pair it with a spacious, large-hall stereo reverb. Delay and reverb levels can be adjusted independently, allowing you to use them separately or together. The delay time can be controlled using a knob, tap tempo, or CV. You can even send opposing CV signals to the tap tempo and delay time for glitchy, pitch-bending, rhythmic effects. Additionally, CV control extends to the feedback, delay, and reverb levels, providing greater flexibility. Motion Pictures offers rich ambient sounds in a compact design, combining delay and reverb in one module to optimize rack space while preserving sonic depth.

Notes: The SD909 adapts the iconic TR-909 snare drum and noise generator for use in the Eurorack modular synthesizer format. Tiptop painstakingly tested the module in their lab to sound like a fresh machine coming off of the assembly line back in the 80s. On top of the original circuit, Tiptop have added new features that expand the palette of what can be produced with this analogue circuit.

The sound of the SD909 consists of two main sections: the binary noise generator and two modulated triangle oscillators. The oscillators provide the low end punch while the noise makes up the upper sonic spectrum, resulting in a combination that makes the 909 snare sound so rich. In the SD909 module, the noise generator and oscillators are variable and voltage-controllable, pushing the circuit beyond its original boundaries, offering new sounds and many variations of the original tone. The panel also has markings to guide setting the knobs to reproduce the vintage snare sound of the original machine.

Just like the other drums in this series, the SD909's high-powered output gain stage allows further enhancement of the sound through distortion and clipping. Tiptop have designed a dual pulse-shaper circuit on each gate input so you can trigger your SD909 with Trigger/Gate signals from step sequencers, clock dividers, or any other pulse/clock sources. Also, the SD909 is equipped with access to the MIXZ MixBus, matching the rest of the Tiptop line of percussive modules.

TR-909 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 46mm
Power: +12V 35ma / -12V 30ma

Notes: The QSlider black is an analogue CV source with four 60 mm faders.

The control range of the four sliders can be defined with two min/max controls.

The Min controller determines the output voltage at zero position of the slider and the Max controller determines the output voltage at the end position of the slider.

The slider now regulates between these two voltages. This allows you to restrict the control range and still have the entire control path of the slider available.

The reverse voltage is available at a second output socket (min and max are reversed). This means that the slider can also be used as a crossmix fader.

Two common channels can be operated unipolar or bipolar. The voltage ranges are 0..+10V or +/- 5V.

The output sockets are located on an extra 4HP panel for mounting at any point (with approx. 40cm long connection cable). This means that several modules can also be mounted seamlessly next to each other.

Power consumption: 30mA at +12V and 20mA at -12V and 12mA at +5V

Depth: 28mm

18 HP

Notes: Designed by Hexinverter, from classic electro snares to warping, alien percussion, the Mutant Snare is a radical departure from the static sounds of the TR-808.

13HP
30mm deep
+50mA, -50mA
Eurorack format module

Notes: A classic electro percussion synthesis design reborn as something completely different. Hexinverter wanted to recreate a classic hihat synthesis design as something new and exciting, so they took the super electro 808 circuit and transformed it into a powerful creative tool for modular synthesis.

13HP
30mm deep
+75mA, -45mA
Eurorack format module

Notes: The iconic clap sound of the TR-909, but with all the features we all wished the original had. Hexinverter's take on this design adds some much-needed range and depth. The clap is a highly versatile module - it is a voltage-controlled LFSR noise oscillator as well as a powerful percussion synthesis engine.

13HP
30mm deep
+75mA, -45mA
Eurorack format module

Notes: The SAMPLYR module is a sample player module, that plays sample files from a microSD card.

The samples are simple 8-bit mono WAV files. Features of the module are:

CV control for pitch with 1V/octave
Gate input
NO (practical) LENGTH LIMIT for the sample playback, because the module plays the samples directly from the memory card
Sample is displayed on the included OLED display
For each sample, following playback parameters can be edited: Sample start/end, loop start/end, loop crossfade, transpose/tune, all this settings are visible in the display and are saved per sample
Different loop modes can be selected: Oneshot, Reverse, Loop forward/reverse/alternating, loop hold (loop remains playing when gate goes to off)
Editing of the different parameters is accomplished with an endless encoder and a small menu
CV control for playback start, loop start, loop length, reverting playback, sample selection
Six buttons can be used for quick switching between six samples of the current folder
Additionally to the audio output, the SAMPLYR provides trigger outputs for loop start point, loop end point, playback end; by this, certain other operations can be triggered at these specific points, e.g. synchronizing to the loop points.

...and all this in a 1 unit AE module!

The sample files are organized as simple folders on the micro SD card named "A"..."Z" and per folder files named "0....wav, 1....wav, ..."

Included with the module is a micro-SD card with some demo samples; and each buyer will receive an update for the factory samples, made by the sound designer "empty vessel" exclusively for the SAMPLYR module (provided as download later this year).

The SAMPLYR module is of course not a hi-fi, high quality sampler module due to its 8-bit design. It has the flavour of the early samplers like EMU II, Fairlight CMI IIx, Ensoniq Mirage... The typical, recommended sample rate is 16000 Hz. these samples can be pitched up by approx. 1 1/2 octaves max.

Beyond the 8-bit resolution, the samples can be also encoded as uLaw and aLaw; in this case, the resolution is true 10 bits. For converting your existing samples, the open-source audio editor "Audacity" is great for the conversion and editing process.

Note: The SAMPLYR module is a sample player only; it doesn't offer recording of audio.

Notes: Voltage-Controlled Voltage Processor

A*B+C is the ultimate utility for audio and control voltage. It performs multiplication, addition, and attenuation, providing a simple way to create complex signal interactions and timbres.

It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.

By combining different blocks, many functions can be achieved:

Audio Processing:

Four-quadrant amplitude modulation (ring modulation)
Linear VCA
Signal mixer
2x gain amplifier
Phase inverter
Attenuator

CV Processing:

Voltage-controlled attenuator
CV mixer
Attenuator
Inverter
VCA
DC generator

Features

DC Coupled
Signal LED Indicators
B and C INs normalled to 5

Specs

Current Draw: +12V: 50mA, -12V: 50mA +5v : 0mA
Width: 6HP
Depth: Assembled version 25 mm
Depth: DIY version 35 mm
Designed, kits prepared and assembled in Barcelona.

Notes: Module A-121d is a special dual multimode filter which can be used for parallel or serial organized dual mono filters. Even stereo applications are imaginable. The filters are based on two special circuits: one with highpass and bandpass outputs, the other with lowpass and bandpass outputs. It's a new filter design that is not used so far in any other A-100 filter module.

We attached great importance to the usability of the manual controls and CV inputs for dual filter applications: for the filter frequencies of both filters a common control (Frequ.) and a difference control (Delta, filter spread) are available. For both parameters even CV inputs are available (FCV, DCV). The resonance (Q1, Q2), the sensitivity of the individual frequency control input (FCV1, FCV2) and the level of the audio input (In1, In2) are adjusted by means of the individual controls for each filter.

The module has a simple audio mixing unit available with the inputs Mx1 and Mx2, and the output MxO. Provided that the mixer inputs are open bandpass 1 and bandpass 2 are normalised to the sockets Mx1 and Mx2. All other filter types are realized by connecting the other filter outputs (H1 = highpass 1, L2 = lowpass 2) to the mixer inputs.

Controls:
Frequ.: master frequency control for both filters
Delta: controls the difference between the frequencies of the two filters manually (frequency spread), at centre position the frequencies are about the same
Q1 / Q2: resonance controls for filter 1 and 2
FCV1 / FCV2: attenuators for the individual frequency control inputs FCV1 (filter 1) and FCV2 (filter 2)
In 1 / In 2: attenuators for the audio inputs of filter 1 and 2

Sockets:
Mx1 / Mx2: audio inputs of the mixer, Mx1 is normalised to bandpass 1 (B1), Mx2 is normalised to bandpass 2 (B2)
MxO: audio output of the mixer
In1 / In2: audio input of filter 1 and 2 (In2 is normalised to In1)
H1: highpass output filter 1
L2: lowpass output filter 2
B2: bandpass output filter 2
DCV: control voltage input for frequency spread (Delta)
FCV1 / FCV2: individual frequency control inputs, processed by the attenuators FCV1 and FCV2, socket FCV2 is normalised to socket FCV1
FCV: common frequency control input for both filters (~ 1V/oct)

Triangle symbols indicate the normalising of sockets (B1>Mx1, B2>Mx2, In1>In2, FCV>FCV2). The four outputs are inverse labelled.

Technical note:
Ex factory the module is adjusted so that the resonance of the two filters does not reach self-oscillation. If desired the filters can be modified by the user by means of two trimming potentiometers so that self-oscillation is possible.

Dimensions
8 HP
41 mm deep

Notes: Introducing the Cortisol Legend: a spiritual successor to one of my early designs, the Steroid Legend, it presents as 4hp of white hot saturation and hairy distortion, and features manual control over two op-amp driven gain stages, with a diode saturation control in the middle, giving you precise control over distortion ranging from smoldering saturation all the way into utter rail-to-rail fuzzification.

As for the diodes, the Cortisol Legend has two flavors on tap: Steroid Legend-inspired diodes and genuine, Cold War-era USSR-made Germanium diodes from the far reaches of Europe. These diodes are getting increasingly hard to find, but have been known for their warm and fuzzy characteristics by guitar pedal enthusiasts for years. Here, you get the genuine article, for as long as they can be reliably sourced.

In addition to having control over the saturation depth, the Cortisol Legend offers an additional control parameter: Eustress and Distress. Roll off the edge and noise a bit with a Styroflex-capacitor filter which varies with saturation depth, or leave no edge unjagged with this setting.

Speaking of noise, this thing is LOUD, so you may want to have an attenuator such as the psATT on hand, unless of course the loudness is exactly what you want. Hand in hand with the overdrive and distortion comes, of course, beautiful new harmonics added to anything from single waveforms to samples, sounds and entire mixes.

Various diodes will be available at different times, but all variants are ultimately limited - all Germanium diodes used in these are new old stock from the Cold War, and one day they will run out.. Expect individual modules to have a bit of their own character.

Notes: Swarm is a hyper-oscillator capable of an array of patch-filling sounds. Create super-saws, tonal noise hurricanes, and thick bass and lead lines.

Swarm is comprised of a large set of oscillators (up to 88 voices!). Control the number of available oscillators with the Voices control, and dial in the desired amount of pitch variance across the voices with detune. Take Swarm's oscillators from a rich thickening of sound to atonal chaos in the turn of a knob! Swarm also provides macro pitch control with the Freq knob, which also tracks 1v/oct through its CV input. A waveform toggle is also available for switching between sawtooth and pulse waveforms, expanding the timbral palette Swarm offers! Design pumping trance leads, minimoog style basslines, and more with Swarm!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Capture the iconic sound of tape sliding to a halt with Tape Stop, a clock syncable tape stop module that puts this classic effect at your fingertips. Originally an accidental artifact of analog tape, this effect has become a beloved tool in music genres from hip-hop to IDM. Now, it's fully controllable in your modular system.

Adjust the Lag to set the stop length, then tap Trig to activate. Hit it again to resume your audio seamlessly. With clock sync, your stops and starts stay perfectly in time, and a toggle lets you switch between momentary and latching Trig modes. Add a touch of tape magic to your modular system with Tape Stop!

Notes: 2-track trigger sequencer/euclidean generator module - 6HP

Running Order is a two track trigger sequencer. It can be a precise master clock or manipulate incoming clock signal and works great in use as a sub-sequencer/divider in your Eurorack environment.

Zero-jitter clock generation: less than 50 microseconds internal clock jitter
101 style 1/16th note input mode (step/rest) with manual or CV controllable amount of triggers repeats when the active trigger step happens
Euclidean mode enabled for each track where we set Euclidean total steps amount in the circle and then amount of triggers happening in that circle.
Per step trigger probability in 101 mode and global probability in Euclidean mode.
Separate synchronization (reset) inputs, sync for track 1 is normalled to sync track 2
Clock divider for incoming external clock allows to quickly obtain various musical divisions on the fly incl. triplets of course, but more importantly tuplets mode allows you to stretch desired amount of triggers happening into a single bar
Separate mute buttons for each track
8 patterns of triggers sequences stored in the module and recalled on the next power up
also available in 1U / 22HP version

Power consumption:
30 mA +12V
10 mA -12V
0 mA 5V

Dimensions
6 HP
30 mm deep

Notes: ***B-STOCK: Product with some signs of usage but in perfect working order***


The Mutant Rimshot is a fully analogue rimshot and clave generator inspired by the rimshot found in the legendary 909 drum machine; a triple bridged-T oscillator coupled with a state variable filter. The clave sound (not a feature of the original 909 rimshot) is achieved by using just one of the oscillators.

Features

Three oscillator modes

Rimshot HI mode brings classic rimshot sounds
Rimshot LO gives a lower pitch range; try playing with the filter on this setting to get low tom and kickdrum sounds.
CLV (Clave) mode uses just one of the oscillators to give you a brighter, higher percussive sound.
A switch on the back lets you select between original and extended pitch modes. Original mode can give you rimshots exactly modelling that of classic machines (in Hi mode), whereas extended mode gives a wider range of pitch, at the expense of classic accuracy.

Three filter modes

Use the lowpass or highpass filter modes for classic sounding rimshots
Highpass and bandpass can give a wider range of clave and rimshot sounds, as well as completely different percussive elements (especially when turning the resonance up!)
VCF IN lets you blend the clave or rimshot with other sounds. Try adding some filtered noise for a more acoustic sounding rimshot, or for pseudo-snare type sounds.

Novel decay and filter mod controls

The MOD DECAY envelope controls the decay of the VCA envelope
The VCF MOD attenuverter allows you to modulate the filter cutoff with the MOD DECAY envelope
Alternatively, a switch on the back lets you modulate the filter cutoff with the pitch-controlled internal VCO, for filter FM style percussive hits.

Technical specifications

Width: 8HP | Depth: 30mm
Current draw: +45mA, -50mA @ 12V

Notes: Random rhythm generator

Joey is a Eurorack module that generates random gate sequences. It is the offspring of Skippy (Kaona's polyrhythmic sequencer), without simply copying it: it's a very straightforward module that provides unexpected yet controllable sequences.

It offers three main modes:

Random

For random triggers controlled by an internal speed or an external clock.

Fractal

A unique algorithm sprinkled with 5% chaos, creating evolving and surprising patterns.

Euclid

Generates four different Euclidean patterns for complex and evolving rhythms.

Each mode has three adjustable parameters set via a clickable encoder: speed, a mode-specific parameter (probability, fractal root, or Euclidean pattern), and gate length. An external gate input can take over to synchronize speed. A PLAY/STOP button instantly suspends or restarts the gates.

Specifications

Width: 6 HP

Power Consumption:
+12 V: 50 mA
-12 V: 0 mA
+5 V: 0 mA

Depth: 28 mm

Supplied with power cable and Knurlies

Notes: ***B-STOCK: Slight surface marks ***


Designed to be a highly customizable connection matrix, 3DVCA packs a boat load of utility into a small 6HP package. Four VCAs share the three macro controls: X, Y, and Z. As a group, they shape incoming and outgoing signals and emulate the coordinates of a point in 3 dimensional space. This allow the VCAs to work together in a mono, stereo, or quad configuration and accomplish a variety of mixing, crossfading, and panning functions.

3DVCA is designed to be used in the following functions:

Quad monophonic crossfader
Dual stereo crossfader
Stereo balancer
Stereo VCA
Mono to stereo panner
Unity mixer with up to eight inputs
Quadraphonic panner

Each output has a dedicated SUM input which allows an external signal to be automatically mixed into the output signal. This allows 3DVCA to daisy chain both with other mixers and other 3DVCAs. For example, you can create a full mono, stereo, or quadraphonic mix by plugging the output of each 3DVCA into the sum inputs of the next 3DVCA in the chain. Using this method, a set of 3DVCAs can create a fully voltage controlled and decentralized mixer which ties together anything from a small skiff to a monster synth.

When 3DVCA works as a crossfader or panner, the X and Y parameters follow an equal-power curve that keep output signals at the same volume no matter how many inputs are mixed together. This is in contrast to the Z parameter which follows a linear curve to always behave predictably with external modulation sources. All inputs are fully DC coupled in order to work with modulation speed signals as well as static DC voltage sequences; this means that 3DVCA can handle any sort of signal that you throw at it. All op amps in the device employ rail-to-rail inputs and outputs to enable the largest headroom when mixing many different signals together.

Whether you need to maximize your mixing functionality in the smallest possible footprint or have the most control over every aspect of your system, 3DVCA provides a ton of functionality in any system. Enter a higher dimension of sound with the Mystic Circuits 3DVCA.

Dimensions
6 HP
30 mm deep

Current Draw
45 mA +12V
45 mA -12V

Notes: What's that I hear? You want grit and filth for your system? Tired of not having enough harmonics in your signal? Maybe all your sounds are a bit too cold and sterile?

Why not a light inside your system with the Optika VCA - two independent optical VCAs with drunken muscles and a chip on their shoulder, they can go nice and easy on your signal, or they can inject it with a hot dose of raw power that'll give you guitar-face in no time.

The vactrols? Hand made in my workshop, of course, guaranteed cruelty-free, no dolphins harmed and zero palm oil. The sound? You'll get that slewy, chewy, turn-your-triggers-into-envelopes mess that you love vactrols for, but with the utmost care taken to minimize bleed and all the other things we don't always love about vactrols.

Yes, great, you've got lots of VCAs with "clean gain on tap" and "exemplary responsiveness" and all that other stuff - please excuse me if I'm yawning with utter boredom and rolling my eyes- now, get yourself a fully analog optical VCA that'll make your hairs stand on end when you push the gain into distortion and press the vactrol into saturation.

Use it for stereo, use it for two signals, use both channels in sequence, but please let your signals go towards the light and put it to use! Don't make me beg

Notes: ***B-STOCK: Item refurbished, repaired and in perfect working order.***


Erica Synths Bass Drum is developed in collaboration with the French company e-licktronick and it's our take on analogue bass drum circuits adapted for modular systems. Massive, punchy sound, Accent & CV control over key parameters of the module make it distinctively expressive in live performances.

Features
Pitch
Tune
Tune Depth controls
CV control with attenuators over Pitch, Decay and Drive
Manual trigger
Accent for better expression

Dimensions
14 HP
30 mm deep

Current Draw
60 mA +12V
30 mA -12V

Notes: Catena is a control voltage powerhouse, packing in four channels of attenuation and offsets, two VC slew engines, half and full wave rectification, input voltage doubling and switchable voltage reference sources with an external offset input. As well as the standard cascading offset and polarisation utilities, the module can act as a percussive envelope generator or sidechain ducker, slow lag or glide control, waveshaper and mixer. Four channels of attenuators or attenuvertors are chained together, running from left to right, with an additional alternative mode per channel. The channel functions are chosen using a three-way slide switch above each control pot. Alternative modes use attenuvertion at the preamp stage allowing the modified signal to be polarised.

Alternative Modes

CH 1: Percussive Slew

CH2: Lazy Slew

CH 3: Half Wave Rectification (with gain boost)

CH 4: Full Wave Rectification

VREF Control

With no CV input patched, each channel generates +-5V or +-10V depending on the attenuvertor and VREF Switch position. The switch toggles between +5V and +10V precision voltage references. All Inputs and outputs soft clip at +-10V.

Slew Controls

CH 1 & 2 in the alt (slew) modes can have the slew response switched between tight and loose. There is further CV control via the CV input jack.

Offset Control

The pot controls the additional VREF amount added to CH 2, 3 & 4. With a CV input patched the pot controls an external signal input amount.CH 1 can also be offset by shifting a jumper on the rear panel.

Signal Doubler

Instead of unity gain as per the other channels, CH 4 doubles the input gain of a patched signal, but keeps any chained or offset signals at unity gain.

Mixer

High quality OPA op amps are used throughout, and Catena will happily serve as a mixer for 1-4 channels of audio. A five channel mixer is also possible by adding an audio signal to the offset jack.

Specifications

Intellijel 1U format
Width 28HP
Depth 34mm
Power requirements ~80mA +12V/~80mA -12V
Control voltage range +-10V
Impedance Input 100K / Output 1K