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Sequential Circuits | Prophet VS Rack
Here's a very cool keyboard from Sequential. Notice the joystick for controlling your sound modeling. The Prophet VS uses Vector Synthesis as its revolutionary new means of sound creation. It uses a total of four oscillators per voice with 127 waveforms (32 user) and dynamic waveform crossfading via the joystick. The sonic results were complex, evolving textures unlike anything heard before or since, making the VS an instrument that remains in high demand even today.
This was Sequential's first digital synth, and it was also their final synth unfortunately. But after Sequential was gone, Vector Synthesis technology went into the popular Korg Wavestation and Yamaha's SY-22 and TG-33. The Prophet VS is still a very sought after instrument because it has an incredible range of sounds!
The Prophet VS also came as a rack mount version.
|Model||Prophet VS Rack|
|LFO||Two, each with own envelope generator|
|Engine Detailed||96 preset waveforms + 32 user waveforms|
|Filter (VCF)||Curtis analog (digitally controlled) 4-pole lowpass with its own envelope generators|
|Envelope (VCA)||5 stage amp, filter and mix envelopes|
|FX||twin chorus, stereo effects panning of individual oscillators/individual voices|
|Arpeggiator||versatile arpeggiator, user can define note order by playing etc|
|Produced:||1986 - 1984|
|Legend:||Obvious||Y: Yes, N: No, N/A: Not Applicable|
|VCO||Voltage Controlled Oscillator||DCO||Digital Controlled Oscillator|
|LFO||Low Frequency Oscillator||Sub||Sub Oscillator|
|VCF||Voltage Controlled Filter||VCA||Voltage Controlled Amplifier|
|Velocity||As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.||Aftertouch||Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.|
|Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.|