Sequential Circuits Pro One

Sequential Pro One Image

The Sequential Pro One is a wicked little monosynth! It comes from the same period and genre as the Roland SH-101 and Moog Prodigy. The Pro One was basically Sequential's attempt at taking their legendary Prophet 5 poly-synth and packing it into a compact, inexpensive, monophonic analog synth! It has two VCOs, a great 4-pole lowpass filter, two ADSR envelopes (one for filter), and a compact three-octave keyboard. With a Pro-One, you can easily create punchy analog bass-lines and leads or quirky analog synth effects.

The Pro One is an extremely flexible synth with lots of modulation possibilities (ie: the filter, VCO B and LFO can modulate VCO A or B frequencies or pulse widths, or the VCF). There's also an onboard sequencer, something common on many Sequential synths but not often found on other monosynths of the time. It is very basic, however, storing only two patterns and up to 40 notes max. Also, only pitch info is recorded (and in step time only); you can not assign a note duration to any notes. So it's basically a short melodic sketch-pad...but useful. Also onboard is an arpeggiator which has UP and UP/DOWN patterns.

Sequential Pro One Image

The Pro One is relatively simple and intuitive to use, fun, educational and responsible for some of the coolest and hardest basslines in electronic music today! It is used by Hardfloor, Überzone, the Prodigy, Cirrus, Fluke, Depeche Mode, Download, Banco De Gaia, Vince Clarke, New Order, Freddy Fresh, Mouse on Mars, Prince, Soft Cell, Richard Barbieri and Sigue Sigue Sputnik.

But since you can't always find one (about 10,000 were produced), or one that works properly... Wine Country Sequential has come up with a solution! WCS has been servicing old Sequential gear for years, as well as selling repair parts, etc. They have developed the Pro One Software Synthesizer Plug-In, an awesome replica of the original Pro One, both in look and sound! It has some added features and is an incredible way to easily add the sound of the Pro One to your music!

Lookup Sequential Circuits Pro One Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a Sequential Circuits Pro One? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

68 Visitor comments
crashtv
May 13, 2010 @ 1:26 pm
I too was most pleased to see a Pro One in the HTDA video snippets. We still have one but only one oscillator works. One day it will be fixed.
esti
May 5, 2010 @ 3:00 am
can't by any means forget skinny puppy. it's also in one of the new HOW TO DESTROY ANGELS videos, played by Mariqueen Reznor.
sequentialsoftshock
May 1, 2010 @ 3:27 am
Words cannot describe the love I feel for my Pro~One. She's like a child. I've named her. I miss her when I am gone. It is the most amazing sounding instrument I've ever used. I love the fact that there are no presets and YOU set the sound yourself. This is love.
Ian
April 11, 2010 @ 10:12 am
One of my fave mono-synths and I've had a few! Very flexible and has a very nice organic feel to it. Love the fact it has 2 osc so much more gutsy than a rogue/sh101/sh09 etc.

They seem to have shot upin price recently. For Years they were always around the £350 mark from say mid-90's up until a year ago..now the standard price seems to be about £800! I have no idea whats driving these kind of prices. I've never used VST's but I'm assuming that either people aren't satisfied with VST synths or everyone is getting a bit carried away and becoming "collectors"?
McFullon
March 18, 2010 @ 10:05 pm
Sold my Rogue in ´82 and moved on up to one of these...
I loved it so much that I bought another later that year.
The mini sequencer/arp hooked up to my drum box kicked ass... at the time! The LFO was very good...perfect for those classic Depeche Mode buzzy PWM bits!
Probably one of the finest monosynths ever made...for it´s price!
 
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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 - Monophonic
  • Oscillators - 2 VCOs (CEM-3340 chips): : VCO A saw/pulse, VCO B saw/tri/pulse, Noise
  • LFO - saw, tri, pulse
  • Filter - CEM-3320 Filter chips: 4-pole lowpass with Cutoff, Resonance, ADSR Envelope, Keyboard Tracking
  • VCA - ADSR Env
  • Keyboard - 36 keys
  • Arpeg/Seq - Arepg: UP, UP/DOWN patterns, Latch mode; SEQUENCER: 2 patterns of pitch info only, 40 note capacity.
  • Control - CV/GATE
  • Date Produced - 1981 - 1984
  • Resources & Credits
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