via this auction"S/N for this beauty is B3257.
The mono-/duophonic 'Cat' is a 70s analog synth with an architecture designed very closely after the famous arp odyssey. The term 'SRM' stands for 'series revision model', so it is an improved version with additional interfacing options and ssm-based filter, there is also a 'SRM2' model in existence. The Cat features 2 vco's, one with pulse width modulation, both with a sub oscillator, vco1 and 2 can be adressed separately in the 'duophonic' keyboard mode, like in the Arp Odyssey. This technique uses the internal keyboard voltages, so this will not work with external control voltages. To add to the feature list, the Cat offers a mixable noise signal, a resonant 24db lowpass filter, one adsr-envelope and one ar-envelope with retrig option and furthermore a lfo as well as sample & hold. The lfo is permanently synced to the gate signal, so it automatically restarts when a new note is played - often useful, sometimes limiting.
The strongest point about the Cat is modulation, there is an abundance of modulation possibilities on oscillators and filter - pwm, sync and crossmodulation from vco1>vco2 and vco2>vco1 simultaneously and independently, all with very precise control. VCO1 can be switched out of the audio path, if things get too nasty. The various vco waveforms and suboctave signals are available in parallel, each one having their own slider - this comes in extremely handy with sync and cross mod sounds. The filter can be driven into self oscillation and is controlled by lfo, sample & hold or one of the envelopes and above all offers frequency modulation by vco1. Interfacing is possible via a cv/gate stereo jack, inputs for pedal control of vcf and vca and even an external signal input to the filter are available.
Soundwise, the cat's dominant impression must be 'powerful', things can get very thrashy and harsh, but there are always nuances where strange and beautiful timbres evolve, and there are enough control possibilities given to sensibly pinpoint a certain sound. Generally the sound is positively like 'ancient electronics', it can provide anything from deep bass, to powerful percussive sounds, to complex noisescapes, and it brings in a character all of its own."auction description via dron.de
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