“For sale: Sequential Circuits Pro 1 Vintage Analogue Monophonic Synthesiser in excellent, working condition.

In truly superb cosmetic condition for its age (see photos)”

Click here to visit listing on eBay

“Absolute classic, sounds amazing, newly serviced, pots & keys all glitch free, showing age appropriate signs of wear & tear but generally in good condition.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 27 June 2019, Comments Off on Sequential Circuits Pro One

“For sale: Sequential Circuits Pro 1 Vintage Analogue Monophonic Synthesiser in excellent, working condition.

In truly superb cosmetic condition for its age (see photos) ”
Click here to visit listing on eBay

Pro One, Sequential Circuits @ 27 June 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro-One 80’s Vintage Monophonic Synthesiser. Condition is Used.
This very nice example of the classic synthesizer comes with a bound copy of the user manual from the USA. The synthesizer has been fully serviced by Cyberwave EMS this month and the JWire keyboard fully re-bushed. It has a few signs of minor wear on a few keys and minor scratches and scuffs on the underside and side wooden planels but nothing that can’t be repaired or rectified.
It is fully functional and plays to full specifications. It is a really lovely instrument and will last year’s to come having been thoroughly cleaned internally and externally with a full professional service.
A good investment and very nice instrument.
Cosmetically 96% perfect and 100% operationally. ” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 20 June 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro-One 80’s Vintage Classic Monophonic Synthesiser Synth. Condition is Used.
This rare original boxed beautiful example of the super classic monophonic synthesizer has been fully serviced by Cyberwave EMS , the keyboard has been re-bushed and thus plays as new. It was stored in its original box since purchased back in the 1980’s.
It is in as new condition and comes complete with the original user manual and cardboard box, I very much doubt you will find another like it which hasn’t been fully refurbished etc…
It is a good investment and an excellent instrument.
I would rather not risk posting it out and would prefer collection in person if possible. Please ensure that you have the money to make a full prompt payment before placing bids.Thank you.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 13 June 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro-One 80’s Vintage Classic Monophonic Synthesiser Synth. Condition is Used.
This beautiful example of the super classic monophonic synthesizer has been fully serviced and plays perfectly. It was stored in its original box since purchased back in the 1980’s.
It is in as new condition and comes complete with the original user manual and box, I very much doubt you will find another like it which hasn’t been refurbished etc… ” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 13 June 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used.

Membrane style keyboard, which triggers less reliably than the j-wire style. Triggers reliably via the CV input as is, or google “sequential circuits pro one membrane keyboard” to see a variety of other methods/retrofits.

Otherwise, this classic analog synth is in great working condition!” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 06 June 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used.

J-wire model.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 30 May 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro-One 80’s Vintage Monophonic Synthesiser.

Please read carefully ;

I bought this synth completely refurbed it is very tidy however a few of the keys are now not triggering and will need to be serviced.

Any buyer is welcome to try the synth but it will be sold as seen I have tested it out and to my knowledge there are no other faults at all. I intended to get a service and keep it but now I’m needing funds to refurb my house so I decided to sell it as is.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 17 May 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro-One Vintage Analog Mono Synth Excellent condition. Everything works well. Has j-wire keyboard with replaced bushings. Sounds wonderful. Clean. Has minimal cosmetic wear. Selling as-is due to age. Manual and power cord included.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 17 May 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used but in Very Good, working condition.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 02 May 2019, Comments Off on Sequential Circuits Pro One

” Sequential Circuits Pro One w/MIDI Vintage Analog Mono Synth. Excellent condition EXCEPT noise generator doesn’t work. Everything else works great. Has MIDI. Has j-wire keyboard with replaced bushings. Plays great. Sounds really great. Clean. Has a faint scratch on back and corner wear on one side. Otherwise, looks excellent. Selling as-is though. Manual and power cord included.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 28 March 2019, Comments Off on Sequential Circuits Pro One

“you are bidding on the synth pictured
from a private collection. has been sitting a long time
but in Great physical shape. all keys and functions are working well
some of the pots and switches and key contacts will need cleaning and normal service
I have not had this unit serviced, but will guarantee it to work as it should
faces up Very nicely as seen. wood sides are in very good shape.
dates to 1983. the keys are a bit clanky when triggered – I think they need a new felt strip inside
no major issues or problems” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 21 March 2019, Comments Off on Sequential Circuits Pro One

“you are bidding on the synth pictured
from a private collection. has been sitting a long time
but in Great physical shape. all keys and functions are working well
some of the pots and switches and key contacts will need cleaning and normal service
I have not had this unit serviced, but will guarantee it to work as it should
faces up Very nicely as seen. wood sides are in very good shape.
dates to 1983. the keys are a bit clanky when triggered – I think they need a new felt strip inside
no major issues or problems” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 14 March 2019, Comments Off on Sequential Circuits Pro One

“1x Sequential Circuits Pro One Vintage Synthesiser

In good working order, just had a service

Rebushed j-wire keyboard, plays nice and keys are level

Couple small chips on the front panel which are purely cosmetic

Missing both name badges, which it has been since I got it.

All time classic mono synth from sequential circuits. essentially a single voice prophet – and too wonderful for any words to do it justice! It also is the model with a Tibetan Buddha and chant* stencilled on the circuit board, for extra good vibrations!” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 14 March 2019, Comments Off on Sequential Circuits Pro One

“Up for auction is my Sequential Pro One vintage analog synth w/MIDI in near mint condition. It has the more desirable j-wire keybed which has been painstakingly refurbished.

What has been done:

MIDI kit installed. Simply connect a MIDI cable from your controller or sequencer to the MIDI IN jack. Hold the red button down to enter MIDI mode. Send the kit a MIDI note and it will respond on that channel from that point forward. A red LED above the pitch/mod wheels indicates whether or not it is receiving MIDI. CV/GATE can also be used.
Keyboard bushings replaced, bushings greased, j-wires polished, every key removed/cleaned/polished, and keybed painstakingly adjusted to perfection (both height and width). Each j-wire adjusted so that they hit the buss wire at the same time for more accurate keyboard response. Keyboard now plays like butter. I have extensive experience refurbishing pratt-reed keybeds and took extra care to make this synth play like a dream. This easily took 4-5 hours of painstaking work to complete.
Prophet-5 knobs with metal caps installed. Paint on caps is absolutely perfect, with no scratches.
Every knob removed and cleaned with a toothbrush to get all the dirt out of the cracks.
Wood panels removed, sanded, waxed, and hand-rubbed to bring out the grain.
Pitch/Mod wheel plastic replaced with NOS wheels from Wine Country. The old ones crack over time and can slip on the pots.
All pots and switches cleaned.
Power cord replaced with a much nicer panel mounted 3 prong IEC power receptacle. Makes it much easier to remove from a stand (power cable included).
Inside and outside of synth completely cleaned.
Synth voices calibrated and checked over for tuning stability up and down the keyboard.

I own two Pro-One’s, and this one sounds the best of the two. It stays in tune up and down the keyboard. Pots have been cleaned but a few might be scratchy. I will retest before shipping. Not sure why this one has such a nice rounded, thick character to it but I prefer the sound over my other Pro One. Physical condition is very clean, near mint. The wood panels have some nicks and dents here and there, and small holes where knots are in the wood. Every knob cap is pristine. Every knob has been cleaned. A few scratches on the front panel. See photos for details. Only selling to fund another purchase. I am very picky about my gear, and have refurbished this to as close to perfect condition as possible.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 07 March 2019, Comments Off on Sequential Circuits Pro One

” First class example of this iconic monophonic synthesizer.”
Click here to visit listing on eBay

Pro One, Sequential Circuits @ 21 February 2019, Comments Off on Sequential Circuits Pro One

“I’m selling this much loved piece of kit as it’s been under a dust sheet in my studio for the last 12 years and deserves some use. It’s been well looked after but hasn’t been used for some time. It’s never been gigged – studio use only. Before listing I fired it up for testing and it could do with a service but a spray of pot cleaner in the right places would probably do the job.

Supplied with the original manual in pristine condition!
The Pro Solo is a little bonus to help get to hooked up and started with the Pro One straight away.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 21 February 2019, Comments Off on Sequential Circuits Pro One

“The awesome Pro-One in great working order. No modifications. I am the original owner. Looks and sounds great.

This is the preferred J-wire model.

Recent restoration includes;

– 8 noisy potentiometers replaced with new ones.

– All new keyboard bushings.

– New power cord.

– New power switch and new fuse holder.

– All switches and potentiometers cleaned.

– Keyboard contacts cleaned like new.

A few extras are also included;

– Extra keyboard to circuit board cable that is extra-long.This is useful for servicing.

– Extra spare potentiometers included in case you need to replace any in the future.

– The original potentiometers that were replaced during servicing are also provided.

Original instruction book is also included.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 14 February 2019, Comments Off on Sequential Circuits Pro One

” One owner since new, bought in Leeds in the very early 80’s. It has never been gigged but used for music fun at home.

The pictures shown are of the actual Synthesizer.

Model 100 – serial no. 5193 – circa 1981
Number of keys: 37
Type: keyboard synthesizer
MPN: does not apply
Analogue/digital: analogue
Brand: sequential circuits

It is in working order, slight wear with the odd scuff and little scratches, other than that in good very condition.
Comes with the original cardboard box (however the box is not in good condition). ”
Click here to visit listing on eBay

Pro One, Sequential Circuits @ 07 February 2019, Comments Off on Sequential Circuits Pro One

“UNIT IS IN EXCELLENT VISUAL CONDITION AS SHOWN. ONE KEY SEEMS TO SIT A LITTLE LOWER THAN ALL THE OTHERS. UNIT POWERS UP, BUT I DO NOT KNOW ENOUGH TO TEST FUNCTIONS. THE GATE LIGHT COMES ON WHEN ALL THE KEYS ARE PRESSED. SELLING AS IS FOR PARTS. NOTE ONE OF THE WHEELS IS CRACKED. PREVIOUS OWNER SAID THEY TOOK IT TO A MUSIC STORE TO GET TESTED AND IT PASSED.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 31 January 2019, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used but in Very Good, working condition.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 31 January 2019, Comments Off on Sequential Circuits Pro One

“The awesome pro-One in great working order. No modifications. Recent restoration includes; 8 noisy potentiometers replaced with new ones, all new keyboard bushings, new power cord, new power switch, new fuse holder. All switches and potentiometers cleaned. Keyboard contacts cleaned like new.

Includes an extra keyboard to circuit board cable that is extra-long.This is useful for servicing.

Extra spare potentiometers included in case you need to replace any in the future.

This is a J-wire model.

Original instruction book is included.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 17 January 2019, Comments Off on Sequential Circuits Pro One

“For sale: Sequential Circuits Pro-One with beautiful wood case. Works perfectly and plays great.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 17 January 2019, Comments Off on Sequential Circuits Pro One

“As you can see it’s got some graffiti from the 80’s. I bought it in 82. The keyboard is a bit uneven in key height but all the keys work. All the knobs and everything works but it could probably use a cleaning.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 10 January 2019, Comments Off on Sequential Circuits Pro One

“For Sale. My beloved Pro One synth which I have owned from new. It has NEVER BEEN GIGGED and has spent it’s entire life flightcased or sitting in my studio. There are two small cosmetic scratches (shown in the pics) which don’t affect its performance in any way. Like all things of its age, it could do with a spray of pot cleaner (and I would recommend that the buyer does this), but is in full working order and sounds great. Extremely rare now and hard to find in this condition. If you love that fat analogue sound, get bidding and you wont be disappointed. ” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 03 January 2019, Comments Off on Sequential Circuits Pro One

“SEQUENTIAL CIRCUITS PRO ONE SYNTHESIZER
SERVICED AND TESTED BY THE ANALOG LAB IN EARLY 2017
NOT USED SINCE.
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 approx15 LBS
22 WHITE KEYS
15 BLACK KEYS
NO BOOKLET OR INSTRUCTIONS , NO CASE” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 29 November 2018, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One , in fantastic condition. J-wire edition and serviced in December 2017 by James Walker at Synth Repair.

Well looked after in a smoke free studio.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 22 November 2018, Comments Off on Sequential Circuits Pro One

“The sequential Pro-One is one of the most desirable analog mono-synths out there. This is a great find for someone who likes well-cared for synths that work as they should and look great. This unit has lighted, aftermarket, pitch/mod wheels in addition to the wood upgrade.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 08 November 2018, Comments Off on Sequential Circuits Pro One

“First class condition example of this iconic synthesizer.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 01 November 2018, Comments Off on Sequential Circuits Pro One

“Very recently serviced (30 days ago by SD Machines in Miami) Sequential Pro-One with case and owner’s manual. Everything works. In very good condition. It has a new transformer, new power switch, all keyboard contacts have been cleaned, new bushings, all keys aligned and calibrated. There is a chip in the paint next to the LFO amount knob (see picture). The Modulation wheel broke in two and has been glued together (see picture) The inner foam of the case is not the original one (see picture)” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 18 October 2018, Comments Off on Sequential Circuits Pro One

“Up for sale is a highly modded and amazingly cool Sequential Circuits Pro One.

This synth is modded. Keyboard is an entirely rebuilt J wire keyed… not the horrible membrane version. The serial of this synth lands in the membrane keybed version but a J wire keyed was overhauled and installed. It plays and tracks extremely well. No double triggers or mis-triggers. It also has an aftertouch strip put in. The key dip is just a tiny little bit less, and there is a pic showing that. The keys goes down a little more when you activate the aftertouch. Very light and quick action. The aftertouch controls many things. Pitch up and down, modulation, LFO, Filter, etc…Very flexible variations. Also there are two pots inside the synth for gain functions for the aftertouch if needed. There is an additional LFO pot added , and there is duel portamento pots for the two VCO’s . Very effective on glides rather than the stock single portamento . Also a momentary jack in the back for on/ off portamento. Again a very effective performance feature. Tested , and everything works as should. In tune and calibrated. Ground loop issue corrected, which was common for these keyboards. Condition is good. There are a few marks on plastic and some marks on the keys. But its all minor… jut=st stating for full discloure on this ad. The only thing to note is that the Master Tune pot shaft has the tip broken off. You can still easily use / adjust it. With all the mods completed, this takes the Pro One to a whole new level. Ive created some very wicked efx, basses, leads that simply cant be done on a regular pro one. GREAT synth, great condition, great price. ” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 04 October 2018, Comments Off on Sequential Circuits Pro One

“Vintage Sequential Circuits Pro One Analog Synthesizer in great condition. Legendary synth used by everyone from Depeche Mode and New Order to Prince.” Click here to visit listing on eBay

Pro One, Sequential Circuits @ 04 October 2018, Comments Off on Sequential Circuits Pro One

“SEQUENTIAL CIRCUITS PRO ONE SYNTHESIZER
SERVICED AND TESTED BY THE ANALOG LAB IN EARLY 2017
NOT USED SINCE.
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”
Click here to visit listing on eBay

Pro One, Sequential Circuits @ 27 September 2018, Comments Off on Sequential Circuits Pro One

“Sequential Circuits Pro One Analog Monophonic Synthesizer Fatar Keybed Turbo CPU MIDI

I’m selling my beautiful Pro One.

I’ve modified it with the Turbo CPU Midi Upgrade and I’ve installed a new Fatar keybed so you don’t have to worry about failing membranes or adjusting j-wires.

With the new keybed it plays and feels like a brand new modern synth.

It’s the same keybed that is installed on most modern Moog synthesizers.

The connections are identical to the Moog Little Phatty keybed.

The midi upgrade is a nice improvement.” Click here to visit listing on eBay