Sequential Circuits Prophet 600
The first commercially available synth to implement MIDI!! It's a fun synth. Its big brother is the legendary Prophet 5. The P600 is very affordable today and is a great buy. Models with the newest software will enjoy polyphonic MIDI implementation and up to 100 memory patches to store their own sounds! The sound of the Prophet 600 is brighter and harsher than that of a Juno 106 but still just as funky.
The P600 has two oscillators per voice with sawtooth, triangle and variable pulse waveforms. The oscillators can be individually tuned or synced together. Similar quality VCF and VCA sections from the Prophet 5 can be found here too! The P5's Poly-Mod section has also been passed onto the P600.
The P600 is extremely versatile and easy to use! Its best functions include the onboard arpeggiator, 2-track sequencer and poly-modulation. The P600 is great for creating analog effects, swells and drones. It has a cool glide effect and has very flexible modulation possibilities! It is used by Hardfloor, The Higher Intelligence Agency and Eat Static. Perfect for Ambient, Dub and other electronic music.
MIDI Parameter Codes:
- Record + 1 = program change on/off
- Record + 2 = current program dump
- Record + 3 = center pitch wheel
- Record + 4 = wheel send/receive on/off
- Record + 5 = sequence dump
- Record + 6 = Omni mode on
- Record + 7 = voice defeat (hold key down first)
- Record + 8 = Poly mode on
- Record + 9 = channel +/-
- Demos & Media
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Video 1 - SCI Prophet-600 Analog Synthesizer
Video 2 - SCI Prophet 600 demoFactory Patches - Courtesy of NoteIt, here are the factory Prophet 600 patches in Midi SysEx format for Macintosh and Windows/PC.
More Patches - Courtesy of NoteIt, here are several custom Prophet 600 Midi SysEx patches for Macintosh and Windows/PC.
- Specifications
- Polyphony - 6 Voices
- Oscillators - VCO A saw / pulse / tri; VCO B saw / pulse / tri / PW
- LFO - pulse / tri
- Filter - cutoff / res / env / kybd
- VCA - ADSR
- Keyboard - 61 keys
- Arpeg/Seq - Sequencer: 2-track, real-time only; Arpeggiator: up, down, up/down
- Control - MIDI
- Date Produced - 1982
- Websites of Interest
Wine Country Productions - Support for all Sequential Circuits gear
- Resources & Credits
Images from Perfect Circuit Audio.
Errors or Corrections? Send them here.




I have since then restored it and also rebuilt the Glide wheel wich can be quite unstable on the P600.They are wery hard to find here in Europe,and you shall realy make sure that you get one that is 100% ok.
The prices you mention is wery low indeed for this Instrument.
i sometimes plug my guitar into my Boss DR-5 using the pitch to midi converter, with the midi out going into the Prophet and it sounds evil.
i briefly owned a Roland SH-09, which was much bassier, the prophet just cant get those lows. but i preferred the midi implementation and over all more control the Prophet offers.
If ya get one, carefully clean the contacts as most 600's i've seen have small issues that a good clean upsolves quickly.
these synths can take abuse, I recently tried one - it was beat to hell, on the road, dusty, damaged... Man - it fired right up and blasted the pawnshop into outer space.
Cheers www.davidsperopeligro.com