Sequential Circuits Six-Trak

Sequential Circuits Six-Trak Image

The Six-Trak is Sequential's beginner synth. It has typical Sequential sounds in an analog six oscillator, six voice synth. It is not fun to program, there is only one knob and you need to assign the parameter you wish to adjust to this knob. The assignment settings for the various parameters are listed in the center of the front panel. It does however feature MIDI with controllers for its parameters to make editing easier using a computer program such as Unisyn or other external MIDI controller.

Sequential Circuits Six-Trak Image

The Six-Trak features two operational modes: Polyphonic Mode and Unison Mode. In Unison mode, with all six oscillators, this baby gets fat, rich, creamy and wild making it an excellent stand-in for Moog-like sounds. Also, the Six-Trak is capable of interesting and complex sound effects, mostly thanks to useful cross modulation and the six oscillators. It also includes a simple 6-channel on-board sequencer (of little usefulness these days). Its biggest limitations were: shortest attack too slow for really percussive sounds, smallest vco frequency adjustment too big for Zawinul-style subtle frequency envelopes & LFO, and the lack of built-in chorus, which would have helped to thicken the rather thin sounds in Polyphonic mode. The SixTrak can be fun and cool but is overshadowed by its cousin - the Multi-Trak. It is used by Überzone and Cirrus.

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43 Visitor comments
January 13, 2012 @ 7:29 am
I've played this thing for 20+ years and love it.
September 13, 2011 @ 8:25 pm
I just had to comment on this little synth. I just got one this last weekend on a lark. It truly is the little synth that could. I don't know what I was expecting. Simon Mills from Bent said that he loved the silly little daft sounds and loved it's charm. He sold his Prophet 10. Anyway it has the sweetest loveliest sounds. I don't know how else to describe it. I played the prophet 600 today and it has a wider palate but far less beauty in the tone for me. Sound wise I almost like it better than my Juno 60.
August 29, 2011 @ 12:42 pm
also want to clarify something i've seen some misinformation about - each of the six voices has its own LFO and three ADSR envelopes (pitch, filter, and amp), which opens up a huge amount of possibilities when taking advantage of the six-trak's multi-timbral applications. it's also worth emphasizing is what a bargain this synth is - they regularly go for under $500 on ebay (got mine for $400).
August 27, 2011 @ 3:30 pm
just got the latest ROM from wine country and after a little TLC my six-trak is running like a dream. controlling everything via MIDI CC and it's a pure joy to play and program. sounds are wonderfully rich - despite only one oscillator per voice they have a lot of character so it's capable of lush pads, punchy bass and bright leads. the filter is fantastic and can do juicy, warm, and biting with ease. filter modulation can result in some very complex sounds and of course the unison and stack modes let you get some massive and unique modular type sounds. a wonderfully unique and powerful synth!
August 17, 2011 @ 1:47 pm
Funny how the specifications to the right say there are only 48 keys on this...
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  • 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 - 6 Voice Polyphony and 6 part Multitimbral
  • Oscillators - 6 VCO's (sawtooth, triangle, variable width)
  • Memory - 100 patches
  • Filter - 24 dB/oct lowpass w/ ADSR envelope
  • VCA - Standard ADSR
  • LFO - Yes
  • Keyboard - 48 keys
  • Arpeg/Seq - Arpeggiator (up/down) and 2-Track sequencer (up to 800 notes)
  • Control - MIDI (all parameters are midi controllable)
  • Date Produced - 1984
  • Resources & Credits
  • Images from

    Additional info submitted by Jeff Learman.

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