Sequential Circuits Prophet T8

Sequential Circuits Prophet T8 Image

A monstrous 8 voice polysynth from SCI! The T8 has a very fat Prophet-5-like tone. This synth adds many illustrious new features (for its time) such as full MIDI implementation, 76 full size weighted keys with velocity and aftertouch, split/layer double/unison keyboard modes, and a simple but useful real-time sequencer. The new keyboard features many dynamics enhancements, ie: aftertouch can affect pitch, level, filter or the LFO. It was Sequential's finest analog synthesizer. Digital control of analog sound with an extremely flexible, intuitive and beautiful design - right down to the wood panels!

Unfortunately the T8 suffered from the popularity of the much cheaper Yamaha DX7 back in 1983 when they were released. Although it still sounds great, the weighted keyboard is the T8's best feature making it the Rolls Royce of analog synthesizers. Generally these beasts are hard to find today and still very expensive. It has been used by Howard Jones, the Thompson Twins and Steve Levine.

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35 Visitor comments
Zarko Crnogorac
July 14, 2014 @ 10:37 am
Evan, sounds great , constution of this synth is crap , looks like a furnature ! Remind me on poly Moog !
July 6, 2014 @ 7:31 am
It has polyphonic aftertouch internally, but only outputs channel aftertouch via midi. What you can do is put it in midi Mono mode by pressing Record+6. Then each of its eight notes gets its own separate midi channel (and channel aftertouch command). For instance, I set up my Yamaha EX5 in Performance mode, assigned eight difference copies of the same patch to eight different patch locations and pointed the first eight Performance channels to those voices. It's a convoluted setup but works just like poly aftertouch! The Sustain command was still an issue, fixed that with a Midi Solutions box.
May 28, 2014 @ 10:08 am
Several comments mentioned Joe Zawinul's use of the T8. It's the centerpiece of his rig in a rare and fascinating home-rehearsal video. Search for "Joe Zawinul in rehearsal 1985" on YouTube. In the video, he also uses a Chroma Polaris (with Expander), Prophet 5 and Korg DW-6000, but his hands are on the T8 most of the time.
December 21, 2013 @ 7:03 am
This synthesizer contains the keyboard which NED decided to use in the Synclavier because Sequential did such a good job of it...
July 12, 2013 @ 5:36 pm
@sj. Given this synth is so rare I don't think anyone would take offence to someone posting details of one for sale
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User Rating

Rated 4.13 (270 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 8 Voices
  • Oscillators - 2 VCO's per voice (16 oscillators)
  • Sequencer - YES (670 notes)
  • Filter - 24dB/oct low-pass with cutoff, resonance, env amount, key tracking
  • LFO - Waveforms: square, triangle and sawtooth.
    Destinations: osc a, osc b, pulse width, filter
  • VCA - 2 ADSR envelopes per voice
  • Keyboard - 76 weighted keys (w/ velocity & aftertouch)
  • Memory - 128 patches
  • Control - MIDI
  • Date Produced - 1983
  • Resources & Credits
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