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TRAX Rota-Synth RS-1 8-step Analogue Sequencer / Synthesizer

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The Rota-Synth is a desktop 8-step analogue sequencer, coupled with a monophonic, true analogue synthesizer. It does not use a keyboard like a conventional synth, but instead generates musical sequences and sound effects that you program in real time. Use it to create rapidly repeating musical phrases, grungy riffs, retro computer game effects, rolling basslines, off-the-wall rhythmic patterns, dub sirens, weird sci-fi effects, plus sounds yet undiscovered....No clumsy menus to wade through - just switch on and go. You get full, hands-on control via knobs and switches.

Sequencer Section

There are separate pitch controls, toggle switches and yellow LED indicators for each step - creating sequences is fast and easy. The Sequence Length switch lets you change the number of steps in a sequence "on the fly"; great for improvisation in live performances.

You can synchronize the sequences to any electronic musical instrument that has a MIDI CLOCK output (just connect with a standard 5-pin DIN MIDI lead).

You can also sync. the sequence to a computer running music software which outputs MIDI Clock, in which case you will need an optional USB to MIDI lead (available on eBay).

PLEASE NOTE: the RS-1's MIDI Sync. input will only respond to MIDI CLOCK, START and STOP commands - it is not possible to control the actual pitch of notes with MIDI.

A 0 - 5.7V control voltage output is provided, along with a +5V gate output, for driving other analogue equipment such as synths and drum machines.

Synthesizer section

FULLY ANALOGUE voltage-controlled oscillator, with triangle and square wave outputs. No glitchy digital oscillators here! Huge frequency range, tuneable from a few Hz. to almost ultrasonic frequencies.

Full frequency modulation of the VCO by a low-frequency oscillator, for anything from a simple vibrato to devastating hyper-modulation! Waveshape control for even greater versatility - create whoops, ultra-slow sweeps and trills.

Turn up the Glide control a little to slide smoothly from one note to another - perfect for dreamy, melodic sequences. Turn it up further, and you are in the Twilight Zone!

Two square-wave sub-octaves can be mixed with the VCO's output for a fuller, fatter sound, perfect for basslines and organ-like effects.

True analogue state-variable filter for "Moog" (TM) style effects, with manual sweep. Selectable Bandpass or Lowpass response.

Add your own effects pedals to increase the range of possible effects even further!

Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators: 1
Waveforms: Square, Sub Oscillator, Triangle
Osc Modulation: Glide / Portamento, Input, Knob, LFO, Sequencer
Filters: 1
Types: Low Pass, Resonance
Filter Modulation: Input, Knob, LFO, Sequencer
LFO: 1
LFO Parameters: Square, Triangle
Polyphony & Tuning
Polyphony: 1
Timbrality: 1
Tuning: Standard
Modes: Mono
8 step sequencer
Case: Desktop
Controls: Knobs, Switches
Display Type: LED
Dimensions (WxDxH): 278 (W) x 173 (D) x 95 (H)
Audio Output Connections: 1/4" Phone Jack, Mono Out
MIDI Ports: IN
CV Ports: CV OUT, Gate Out, 5V Octave
Control Features: MIDI Synth Input
Power: 15V DC, Positive Tip
Year Released: 2010
MSRP List Price: 200 GBP - convert
Retail Street Price: 185 GBP - convert
Used Price: $250 - convert
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References & Sources

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