Sequential Circuits Pro-One Analog Synthesizer

Description:

Vintage synth demo by RetroSound of the Sequential Circuits Pro-One Analog Synthesizer (demo of various filter and envelope settings, Sync, FM, Polymodulation and more); triggered by the Roland TR-606 “Drumatix”drums: Roland TR-606. No external effects or EQ used.

The Pro-One, released in 1981, was one of the last of the classic analog monosynths. It features two VCOs, a 4-pole low-pass filter, two ADSR envelopes, a three octave keyboard, a sequencer and arpeggiator and tons of modulation options. 

Features: 

• 2 VCOs – VCO A saw/pulse, VCO B saw/tri/pulse, Noise (CEM-3340 chips)
• LFO saw, tri, pulse
• 4-pole lowpass with Cutoff, Resonance, ADSR Envelope, Keyboard Tracking (CEM-3320 Filter chip)
• Two ADSR envelope generators
• Arpeg/Seq – Arepg: UP, UP/DOWN patterns, Latch mode;
• 40 sequencer
• CV/GATE inputs