via this auction
"Includes MIDI input for easy MIDI Clock sync to your MIDI-based computer or keyboards...
Here's the manufacturer's blurb:
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. The CV output is suitable for both V/Hz and V/Octave synth systems.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!
The RS-1 will work on any mains voltage between 110V and 240V ac, via the supplied mains power adapter.
Dimensions: 278 (W) x 173 (D) x 95 (H)"
videos here
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