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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.

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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!

37 VISITOR COMMENTS

P tech

April 27, 2012 @ 11:33 pm

Hi, Just been checking out the going rate for this beauty mint in the UK. Anything up to around £1300! Got mine for £500 four years ago! I'll never sell. Every time you play this instrument, you find a new sound and go to new places. Not the best build quality but the sound makes up for that. Check out the solo in Howard Jones's "What is love". Fine example of the PRO1's sound. Good vid demo on this page to. Cheers.

Connor

April 24, 2012 @ 5:50 am

Also used by KMFDM and Fad Gadget

Ryan

March 5, 2012 @ 12:01 am

The output on the Pro-One is supposed to double as a headphone jack. So it should put out a dual mono signal if a stereo cable is used. When I used stereo headphones with it I got sound in both L and R speakers although the output level was a bit weak.

Mellotron

February 15, 2012 @ 4:12 am

Stereo?!?!? No, the Pro-One is gloriously mono!

jonathan

February 14, 2012 @ 6:20 pm

hi i bought a pro one its in mint condition, my question is, is the audio out
stereo or mono it just i have my stereo speekers connected to it with a stereo
cable but only one speaker works, theres nothing wrong with the speakers
because they work fine on my other synths ??

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