The RH-301 is KOMA Elektronik's solution to a problem many musicians are struggling with: analog and digital equipment that needs to run side by side on a steady tempo: in sync. Analog clock, DIN Sync and MIDI - the RH-301 syncs them all up. The RH-301 is a 'Master Sync Station' that helps electronic musicians get the most out of their equipment by properly syncing their devices and adding an LFO and an envelope that are synced as well.

The beating heart of the unit is the master clock, of which the tempo can be set freely by turning the tempo knob, by tapping a tempo on the tap button, by syncing it to MIDI, DIN Sync or to an external CV clock signal. Besides the normal clock output the user can also divide the tempo signal with the Divisions knob and send a faster or slower tempo signal via the two Division Outputs. The generated clock signal can be passed on to other devices via the two Clock Outputs, two Division Outputs or via the MIDI Output and DIN Sync Output. An incoming MIDI signal can also be passed through via the MIDI Through and Out jacks. All clock outputs are buffered.

The second feature of the RH-301 is the LFO, which can be synced to the master clock or run freely up to 260 Hz in five different shapes: sine, triangle, square, S&H and a special Sine & Noise. This means the pedal can also be used as an oscillator, when the user turns the LFO up into the audible ranges. When the LFO is in Sync-Mode the user can choose the same divisions as the divisions of the master clock. Also wave shaping is available for all of those waveforms. The LFO has two separate outputs on the patch bay: LFO Out and Inverted LFO Out. All the features of the LFO are also controllable via control voltage, the pedal boasts CV inputs for LFO Speed, LFO Reset and LFO Symmetry.

The third feature of the pedal is an ADSR that can be easily synced to the master clock, or run in loop mode. Besides the normal controls for Attack, Decay, Sustain and Release the pedal comes with a Range knob to set the time range of the envelope created, going from a short and snappy linear to a longer and more organic logarithmic response. The EG comes with a normal Envelope Output, but also an Inverted Output. The Envelope Generator can be triggered by an external Gate or Trigger CV Source through the Envelope Gate Input. Besides all these features, the RH-301 also comes with a built-in KOMA Elektronik sensor, which can be used as a separate CV Output on the patch bay as well. No matter what your setup is, digital or analog, if you use a modular synthesizer, DAW, drum computer, synthesizer or KOMA's own BD-101 and FT-201 effect pedals, the RH-301 is an effective tool to make sure they all walk in line.