“SEQUENTIAL CIRCUITS PRO ONE SYNTHESIZER
USED BUT RECENTLY SERVICED BY THE ANALOG LAB.
VINTAGE SYNTHESIZER
MODEL 100 YEAR 1981
MONOGRAPHIC VERSION OF PROPHET-5
MODULATION IS FULFILLING
POSSIBLE TO CREATE A VARIETY OF SOUNDS.
SIMPLE SEQUENCER
ARPEGGIATOR LOADED
COMPACT WEIGHS 14 LBS
22 WHITE KEYS
15 BLACK KEYS” Link

“ALL GEAR IS TESTED AND GUARANTEED TO BE 100%” Link

“Are you a musician looking to add retro sounds to your work? This vintage keyboard is for you!

This is a Sequential Circuits Pro-One is monophonic synthesizer, circa 1981. It has a three octave keyboard and two oscillators. It capable of producing a variety of rich sounds. There were only 10,000 units made. As the serial number demonstrates, this unit was #2795 (pictured).

This keyboard has reportedly been used by artists such as: Nine Inch Nails, Ladytron, Metric, 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. See the vintage synth explorer link below for more information.

If you want to see some demos of what this synth is capable of in the hands of a professional, simply search for “Pro-One” on Youtube.

This unit has been used, so it has some wear. There are some small chips in the wooden frame and scratches on a few of the keys, but otherwise it is in excellent shape. All of the internal components are working perfectly and it has been recently tested (see the Youtube video link). The key bushings have been serviced, so the keys are very springy and responsive.

It comes with the original operations manual, which includes do-it-yourself servicing instructions and sample patches. The manual is somewhat beaten up, but none of the pages are missing.” Link

Pro One, Sequential Circuits @ 30 November 2017, Comments Off on Sequential Circuits Pro One

“I’ve owned and cared for this synth for over 15 years, bought from a well respected synth seller and restorer in London, I purchased this in superb condition and have maintained it. Never used live, only smoke free studio use. Recently serviced and then packaged into storage.

Looking for a good home for it, being fully digital now I don’t find I’m using it as much as I was and would rather it was being used.

These are rare and going up in price every year. I’ve priced the item to sell as there are not many around especially in this condition.

It’s also the better J Wire model.” Link

Pro One, Sequential Circuits @ 23 November 2017, Comments Off on Sequential Circuits Pro One

“Up for sale, a vintage Sequential Circuits Pro-One.

Over all in very good condition, see pictures! The only flaw is a minor crack in one of the modulation wheels, only cosmetic.

110V version but can supply a transformer for 230V countries if you need one.

Recently serviced:

Thoroughly cleaned.
Changed a broken trim pot to a new one.
Changed all old capacitors to new ones.
Replaced the LED.
Changed keyboard.

Comes in original box (a bit worn down) and with manual (also a bit beaten up).

Sold as is, no returns.”
Link

Pro One, Sequential Circuits @ 16 November 2017, Comments Off on Sequential Circuits Pro One Project Machine

“Up for auction is a non-working, Sequential Circuits Pro-One in good cosmetic condition and ready to be refurbished. Power supply went out in 1986 and didn’t repair it as I wanted a DX7 instead, geez. It’s been in dry storage since then. Missing the wooden end pieces because I didn’t like the look in ’82, lol, and missing the on\off switch as seen in photo. Also,replaced original screws. Power cord is dry/cracking. All knobs, switches and keys are intact. Wheels are also good. Sold as is and will be packaged securely. $60.00 flat rate shipping. ”
Link

Pro One, Sequential Circuits @ 16 November 2017, Comments Off on Sequential Circuits Pro One

“This Sequential Circuits Pro-One Analog Synthesizer is in great shape and all controls seem to work fine. There is one key that is slightly raised, as you can see in the picture.” Link

Pro One, Sequential Circuits @ 26 October 2017, Comments Off on Sequential Circuits Pro One

“Very nice condition, tested and working, unbelievable sounds, a rare synth to find in this nice of condition, like all used vintage electronics this synth is sold AS-IS” Link

Pro One, Sequential Circuits @ 19 October 2017, Comments Off on Sequential Circuits Pro One

“Prophet – One. All in good working order to the best of my knowledge. Also in very good condition appearance wise. I have owned this for close to 20 years. Never gigged. Has spent much time wrapped up in safe storage. I had it serviced about 4 years ago. See photo of invoice. Since then it has had little use. It needs a good home as I am selling off studio gear. One of the 4 rubber feet is missing as in photo. Otherwise all as seen. Original pots so have some wear and tear but all functioning correctly. I would prefer for buyer to collect” Link

Pro One, Sequential Circuits @ 12 October 2017, Comments Off on Sequential Circuits Pro One

“VINTAGE synthesizer! ! Pro-One has arrived! Monophonic version of PROPHET-5. Creating sounds is similar to PROPHET, but monophonic sound memories can not. Modulation is fulfilling, and it is possible to create a variety of sounds. The thickness of the sound has a reputation. Simple sequencer, Arpeggiator loaded. It is compact and lightweight with 36 keyboards. Overhaul by a specialist has already been done. ” Link

Pro One, Sequential Circuits @ 05 October 2017, Comments Off on Sequential Circuits Pro One Project Machine

“I have owned and enjoyed this Pro One for the last 30 years. Suddenly last year it stopped working properly. It comes on, the Noise sound module seems to do everything it is supposed to, but Osc A and Osc B do not put out any sound playing on the keyboard. Why? No idea, I have not taken it to get serviced. It could be something simple, or more complex. Cosmetically it is in quite good shape but as you can see from the photos it is missing two of the knobs, and one of the Mod wheels has part of it broken off (otherwise it works electronically). With some TLC these units sell over 3 grand. Ships from NYC ” Link

Pro One, Sequential Circuits @ 14 September 2017, Comments Off on Sequential Circuits Pro One

“SEQUENTIAL CIRCUITS PRO ONE – MIND CONDITION – JWIRE KEYS

Benutzung der Tastatur auch bei gestecktem CV/Gate möglich !

Nichtraucher – Netzkabel anbei !” Link

Pro One, Sequential Circuits @ 07 September 2017, Comments Off on Sequential Circuits Pro One

“Verkaufe eine Sequential Circuits Pro One mi eingebautes midi.
Es gibt ein schalter für mdi on/off.
Midi ist Kanal 15.” Link

Pro One, Sequential Circuits @ 07 September 2017, Comments Off on Sequential Circuits Pro One

“Bought 30 years ago, used as a teen then stored. Much loved. Great condition, working order. Under 8500 serial number and above 1500” Link

Pro One, Sequential Circuits @ 31 August 2017, Comments Off on Sequential Circuits Pro One

“Here we have a Sequential Circuits Pro-One Monophonic synthesizer, a rare Vintage 80s Analog synthesizer made between 1981-1984

It has been cared for in a smoke-free studio environment and never gigged (by me). Cosmetically it is a 9/10, everything looks fantastic.

Functionally it is an 8/10, everything works and sounds great but most of the pots and switches are crackly and need to be cleaned.

Once you dial in a value it’s fine, it’s only when turning/switching you hear some crackling. (some cleaning of the potentiometers/switches should take care of this.)
I also just had the bushings changed out before listing it, and one key is a little higher than the others (see pic) but this doesn’t affect its playability at all.
I hate to part with this one, it just sounds incredible, but I need to sell it so my loss is your gain, low starting bid and a short auction so don’t wait!” Link

Pro One, Sequential Circuits @ 24 August 2017, Comments Off on Sequential Circuits Pro One

“80s iconic,classic synthesiser as used by Prince,New Order and more.Recently restored and serviced by a reputable
syth company.J wire version.In good condition considering age” Link

Pro One, Sequential Circuits @ 24 August 2017, Comments Off on Sequential Circuits Pro One

“Verkaufe eine Sequential Circuits Pro One mi eingebautes midi.
Es gibt ein schalter für mdi on/off.
Midi ist Kanal 15.” Link

Pro One, Sequential Circuits @ 17 August 2017, Comments Off on Sequential Circuits Pro One

“I highly doubt anyone looking at this ad does not know the ins & outs of the legendary pro one.

Arguably the standout synth for bass, leads and pads ever. This machine is a monster!

Mine has been upgraded with the Turbo CPU Midi and is in immaculate condition with zero faults.” Link

Pro One, Sequential Circuits @ 10 August 2017, Comments Off on Sequential Circuits Pro One

“I highly doubt anyone looking at this ad does not know the ins & outs of the legendary pro one.

Arguably the standout synth for bass, leads and pads ever. This machine is a monster!

Mine has been upgraded with the Turbo CPU Midi and is in immaculate condition with zero faults.

Selling to fund a house move, music is taking the backseat for while :(”
Link

Pro One, Sequential Circuits @ 10 August 2017, Comments Off on Sequential Circuits Pro One

“I’m selling my Sequential Circuits Pro One. It’s in excellent condition and sounds unbelievable. This is the model with the J-Wire keyboard which has recently been serviced and works perfectly. The little rubber cover on the audio output jack popped off and I can’t seem to find it in my studio, this does not affect the audio output at all, it’s purely cosmetic – guaranteed!

All knobs, buttons, wheels, keys, etc… work perfectly. It’s in excellent condition and sounds incredible.

I’m also including my Kenton Pro Solo Mk II MIDI to CV interface which allows you to sequence the Pro One with a DAW.

This synth has been kept in my smoke free home studio, so it will arrive smelling clean.” Link

Pro One, Sequential Circuits @ 20 July 2017, Comments Off on Sequential Circuits Pro One

“I had this on auction previously but pulled it, some keys needed a clean after storage , which has now been done. A nice Pro One, the unit was overhauled and serviced by the KSR synth guru. The J-Wire keyboard was rebuilt and re-bushed, There are new wooden cheeks and no damage to any of the knobs. At some point a Kenton Midi kit has been fitted, this is one feature I have not tried out. ” Link

Pro One, Sequential Circuits @ 06 July 2017, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One in great condition, this one has a J-wire style keyboard and comes with the original manual.” Link

Pro One, Sequential Circuits @ 22 June 2017, Comments Off on Sequential Circuits Pro One

“ANY NOTABLE COSMETIC OR FUNCTIONAL ISSUES WILL BE NOTED BELOW IN RED.

THE PHOTOS THAT ARE SHOWN ABOVE ARE OF THE ACTUAL ITEM YOU WILL RECEIVE.

NOTE: J-WIRE”
Link

Pro One, Sequential Circuits @ 08 June 2017, Comments Off on Sequential Circuits Pro One

“Gorgeous analog oscillators.

Can be midi fitted but i left it original and use midi to cv converters which are readily available now with usb and such.

I have the manual somewhere but haven’t found it. ” Link

Pro One, Sequential Circuits @ 08 June 2017, Comments Off on Sequential Circuits Pro One

” Recently refurbished vintage Pro One, with service receipt. Original owner. Great condition, wonderful instrument used on many of the above Gold & Platinum records. Can be modified for midi. Gorgeous analog oscillators – try getting these sounds out of a plug-in…not ‘gonna happen!” Link

Pro One, Sequential Circuits @ 01 June 2017, Comments Off on Sequential Circuits Pro One

“Recently serviced to make sure its tiptop. New Bushings, Jwire version. All original Everything.

Ive had it in the box most of the time except when recording with it… or having maintenance done on it.

Last recent professional service done By Rosen Sound in Glendale CA.” Link

Pro One, Sequential Circuits @ 25 May 2017, Comments Off on Sequential Circuits Pro One

“here im selling a pro one
cosmetically its in very good condition with only the smallest of marks see pics
it has been rebushed and serviced by kent of ksr and is in fully working order
amazing possibilities very deep synth and hard to find in this condition ” Link

Pro One, Sequential Circuits @ 11 May 2017, Comments Off on Sequential Circuits Pro One

sci_pro_one_syntth “Location: Barnet, North London
Asking price is £1790 as these rarely come up for sale, open to sensible offers.
Pay on collection, you can collect or delivery is free in the U.K. can ship overseas on cleared funds at cost to the buyer.

Lovely and well cared for example of the Pro-One synth. Bought this over 12 years ago from well know synth supplier RL MUSIC (look them up on google) and it’s recently been serviced and inspected by their team at KSR in London.

I don’t use this much anymore, fully digital these days, so would like to give it to a good home, it’s had studio use only and in excellent condition, the wood panels look great with some small marks to them but overall this synth looks fantastic and more importantly sounds fantastic.

I’m quite sure I have the original manual in storage which I will locate for the buyer but cannot promise I’ll find it.

This synth is also a great investment piece and will only increase in value over time.

Thank you” Link

Pro One, Sequential Circuits @ 11 May 2017, Comments Off on Sequential Circuits Pro One

“For sale is this Prophet 600 Synth from Sequential Circuits. It has been fitted with the coveted GiiGli upgrade and has full midi integration. This synth is in very very good cond. Stunning. Bought for a particular project its time for it to move on.” Link

Pro One, Sequential Circuits @ 11 May 2017, Comments Off on Sequential Circuits Pro One

” Up for auction my Sequential circuits pro one, a 2VCO monophonic synth from the early 80’s. The overall condition is good for an instrument of it’s age, and it sounds great! Although I am prepared to post this if absolutely necessary, I would far prefer any buyer to collect this instrument in person, due to the value, age, and fragility of classic instruments. Happy bidding!” Link

Pro One, Sequential Circuits @ 11 May 2017, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One [analog synthesizer]
[j-wire model, serial #7764]
(serviced by Wine Country Sequential)
(works perfectly, excellent condition)
(with orig. power cord intact)
Includes:
*orig. manual
*WCS service invoice
*(1) extra pitch wheel
*(1) extra mod wheel) ” Link

Pro One, Sequential Circuits @ 27 April 2017, Comments Off on Sequential Circuits Pro One

usedproone “This is as close to a cosmetically mint Pro One that I have seen. I have owned this synth for 7 years. It came with the J-wire board which is great. However I mostly sequenced it with a hardware sequencer. I just spent $300 to have it fully gone through at Perfect Circuit Audio here in Los Angeles. It sounds dreamy. I am selling in order to buy a OB-6. I’ll miss this synth but I need a poly. ” Link

Pro One, Sequential Circuits @ 20 April 2017, Comments Off on Sequential Circuits Pro One

pro_one “Sequential Circuits Pro One [analog synthesizer]
[j-wire model, serial #7764]
(serviced by Wine Country Sequential)
(works perfectly, excellent condition)
(with orig. power cord intact)
Includes:
*orig. manual
*WCS service invoice
*(1) extra pitch wheel
*(1) extra mod wheel) ” Link

Pro One, Sequential Circuits @ 13 April 2017, Comments Off on Sequential Circuits Pro One

pro_one “Sequential Circuits Pro One [analog synthesizer]
[j-wire model, serial #7764]
(serviced by Wine Country Sequential)
(works perfectly, excellent condition)
(with orig. power cord intact)
Includes:
*orig. manual
*WCS service invoice
*(1) extra pitch wheel
*(1) extra mod wheel)” Link

Pro One, Sequential Circuits @ 30 March 2017, Comments Off on Sequential Circuits Pro One

sci pro _one “This is an original Pro One with a 37-note J-wire style keyboard. I have installed new Pratt & Read rubber bushings for the keys, and have kept this synth stored in my closet for the past 12 years. I also recapped the power supply and reflowed all the solder joints when I acquired the keyboard for my personal home studio. The previous owner drilled two holes in the case (see photos) for reasons I never understood. It never really bothered me, but could be a perfect location for MIDI in/out should you choose to go down that path.

I have just tested all keys, knobs, switches and both pitch wheels with my headphones, and all work great! Also included are the original operating and technical manuals. Both have been written in (original owner again), but are otherwise in fine shape.” Link