“Powers on and goes through the normal boot / oscillator tuning sequence, but after that I am unable to get any sound out of it. It could be the keyboard, it could be the voice chips, or it may just be in some midi remote mode that deactivates local control. If you are good with electronics I am sure you can get this sucker working again. the unit is missing the little rubber button for the “sequencer start.” i wouldn’t use the internal sequencer anyways and i doubt you would either. Includes power supply and a beat up hard shell case. cosmetic condition is not too bad. see pics!” Link

“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

Sequential Circuits, Six-Trak @ 30 November 2017, Comments Off on Sequential Circuits Six-Trak

“For sale one Sequential Circuits Six-Trak synthesizer in very good working condition. It is a US voltage 110v model

All keys, knobs,buttons and sliders are original and working correctly.

There is some minor crackling from some of the pots and sliders when moved. It would benefit from a service but is being sold as is.

The front panel has minor marks from use, the side panels have some scuffs.”
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

Sequential Circuits, Six-Trak @ 30 November 2017, Comments Off on Sequential Circuits Six-Trak

” The Sequential Circuits Six-Trak Polyphonic Synthesizer may be labelled as a “beginner model” by the company, but the features and functionality make it a prime choice for any synth enthusiast. Built with 48 velocity-sensitive keys and the same Curtis circuitry found in the company’s more expensive models, the Six-Trak boasts six voice polyphony and six VCOs for solid lead, bass, and pad modeling. Throw in an expansive onboard sequencer and single knob for one parameter control to achieve a world of sound right out of the gate.

I’ve owned this synthesizer for 2 years and have had nothing but joy from it. The only reason I’m selling is so I can afford to buy… another synthesizer, of course. Comes with 99 great patches. You can edit those to make most sounds you might want. The sequencer is very simple but intuitive and includes some fun features such as multitimbrality (multiple patches at once) and volume for each voice. It’s also one of the few synths from this period that has full midi functionality, so you can plug it right to the computer or a sequencer. Overall this thing is in great condition. The wood panels are slightly scuffed on the corners but no actual damage. All buttons and keys work. You don’t wanna miss out on this 1984 polysynth! Does NOT include stand. ” Link

Sequential Circuits, Six-Trak @ 30 November 2017, Comments Off on Sequential Circuits Six-Trak

“Awesome little synth. Very flexible despite the somewhat unusual interface. Sounds awesome. Sold as is.” Link

Prelude, Sequential Circuits @ 23 November 2017, Comments Off on Sequential Circuits Prelude

“FOUND IN STORAGE. PLUG IN ALL LIGHTS COME ON, NOT ABLE TO FUTHER TEST DO TO TYPE OF HOOKUP. SOLD AS IS.” Link

Prophet VS, Sequential Circuits @ 23 November 2017, Comments Off on Sequential Circuits Prophet VS

“SEQUENTIAL CIRCUITS PROPHET VS – Some scratches – Works fine” 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

Sequential Circuits, Studio 440 @ 23 November 2017, Comments Off on Sequential Circuits Studio 440

” DAS GERÄT FUNKTIONIERT,UND WIRD MIT ANLEITUNG, DIVERSEN KABELN UND LEER DISKETTEN VERKAUFT. LEIDER FEHLEN ZWEI PADS. DIESE SIND ABER NUR GEKLEBT UND KÖNNEN PROBLEMLOS ERGÄNZT WERDEN.

SELTENES TEIL.KOSTENLOSER VERSAND INNERHALB DEUTSCHLAND.
KEINE RÜCKNAHME DES ARTIKELS ,DA VERKAUF VON PRIVAT ERFOLGT. ” Link

Sequential Circuits, Six-Trak @ 23 November 2017, Comments Off on Sequential Circuits Six-Trak

“For your consideration: Sequential Circuits SixTrak.
Get the legendary Sequential sound without breaking the bank!
The SixTrak is one of the earliest synthesizers to boast midi as well as multi-timbrality. More features include an arpeggiator as well as a sequencer. All of this in a great sounding analog synthesizer. All keys, buttons and potentiometers work fine. The only flaw is the power cable which has started to open up at the point of attachment.(See images)” Link

Sequential Circuits, Six-Trak @ 23 November 2017, Comments Off on Sequential Circuits Six-Trak

“I’ve owned this synthesizer for 2 years and have had nothing but joy from it. The only reason I’m selling is so I can afford to buy… another synthesizer, of course. Comes with 99 great patches. You can edit those to make most sounds you might want. The sequencer is very simple but intuitive and includes some fun features such as multitimbrality (multiple patches at once) and volume for each voice. It’s also one of the few synths from this period that has full midi functionality, so you can plug it right to the computer or a sequencer. Overall this thing is in great condition. The wood panels are slightly scuffed on the corners but no actual damage. All buttons and keys work. You don’t wanna miss out on this 1984 polysynth! Does NOT include stand. ” Link

Sequential Circuits, Six-Trak @ 16 November 2017, Comments Off on Sequential Circuits Six-Trak

“Up for auction is a Sequential Circuits Six-Trak vintage analog synthesizer. This model is notable for being one of the first multi-timbral synths, equipped with MIDI and an on-board six-track digital sequencer. The unit is functional with one exception; track 5 does not work. The other notes play. We are not experts on keyboards so there may be other issues we do not know of. That said, please know that you are going to have to have this repaired or use it for parts. There are NO returns. Physically it’s in good shape, with a repaired crack in the wood (see pics). Other than that it just has a few minor cosmetic marks here and there, typical of a 30 year old used piece of gear.” Link

MultiTrak, Sequential Circuits @ 16 November 2017, Comments Off on Sequential Circuits Multi-Trak

“Vintage 1985 analog synth with full 6-voice polyphony. All original equipment including keyboard, power supply, manual, cassette tape with factory sounds, and carrying case! Everything works. In great condition – never gigged with this, only used at home. Just replaced the backup lithium battery. You can program everything about the 6 individual voices and layer them or split the keyboard. If you want classic analog synth sounds, then this is considered an innovative synth for its time.” 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

Prophet 2002, Sequential Circuits @ 16 November 2017, Comments Off on Sequential Circuits Prophet 2002

“Prophet 2002+ sampler (upgraded from baseline 2002 model). Cosmetically it’s seen better days. Function is perfect. The + version has 8 outs and twice the RAM. HxC floppy Emulator installed. I will include external USB floppy drive and a stack of floppies from original owner. I should also have original floppy drive but message me if that’s a deal breaker. ”
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

Prophet 5, Sequential Circuits @ 09 November 2017, Comments Off on Sequential Circuits Prophet 5 Rev 1

“I am selling my Rev.1 Prophet 5, S/N 009. This unit was modified to work with the Powell Probe – you can see some modifications on the rear panel photos. It’s fully functional, having received a thorough service job by Wine Country Sequential. It’s still there in San Jose, CA for local pickup, which would be the easiest, and would ship from there (contrary to any other statement here in the listing).

This instrument has had the following done:

All PS tantalum caps replaced
All functionality restored
Switches and pots cleaned
Keyboard cleaned

I was responsible for all of the factory presets for Sequential Circuits products, and I’ve had this unit for a very long time. I always preferred the SSM chip sound to the CEM/Curtis chips – there’s a certain ‘magic’ to the Rev1 and Rev2 units that was lost for me in the Rev3s. It’s hard to let go, but I have to put some more money into development of my Solaris synthesizer.” Link

Sequential Circuits, Studio 440 @ 09 November 2017, Comments Off on Sequential Circuits Studio 440

“I bought it in the late 1980s in San Jose, California when I lived in San Jose. I had the pads redone by the company owner in San Jose.
Original manual included, approximately 40 ORIGINAL DISCS INCLUDED.” Link

Sequential Circuits, Studio 440 @ 09 November 2017, Comments Off on Sequential Circuits Studio 440

“Beautiful and rare Studio 440 available.

Used by Basic Channel/Chain Reaction, Deepchord, Dan the Automator, Three Times Dope, Cevin Key, Aphex Twin, etc. Way more powerful than an SP-12 and SP-1200 with only 2 analog filters instead of only 8 on the Studio 440, and over 30 seconds of sample time with scsi. Only 500 units ever made by Sequential Circuits.

Purchased from a Sequential collector who babied the unit with very minimal usage. Probably the most clean 440 left in existence on earth. Look at the others that are torn up and selling for more. The unit was purchased directly from Dave Smith himself.

Fully working. Comes with new pads, new data slider, and new blue OLED display. Stunning condition and cheaper then the other 2 440’s that are posted on another auction site. Comes with 20 original Sequential library floppies and original Owners manual and Service guide, and with the latest and last OS eproms from PointSource, and power cable. Vintage unit with no returns. But feel confident with my feedback that the transaction will be solid. I hope the unit will be purchased by someone who knows the power of the Studio 440, and can appreciate how cherry, although not new out of the box, but wonderfully well taken care of this unit is in. This is #29 of only 500 ever made. You will never find a cleaner 440. ”
Link

Prophet 2000, Sequential Circuits @ 09 November 2017, Comments Off on Sequential Circuits Prophet 2000 Plus

” Sequential Circuits Prophet 2002 Plus Digital Sampler. Tested and functional. Made in USA. Serial is 0038. Overall in great cosmetic condition as seen in photos.” Link

Prophet 600, Sequential Circuits @ 09 November 2017, Comments Off on Sequential Circuits Prophet 600

” Selling ]1982 Sequential Circuits Prophet 600 ]e. Everything works perfectly excep program cover is loose it has been taped does not effect plays great please see photos ” Link

Prophet 5, Sequential Circuits @ 02 November 2017, Comments Off on Sequential Circuits Prophet 5 Rev 3

“THIS PROHET 5 IS IN PERFECT CONDITION, NO HUM , NO SCRATCHY POT , NO DEAD VOICE, NO PROBLEMS AT ALL WITH MEMORY BACK UP. IT WAS SERVICED BY THE WINE COUNTRY A FEW YEARS AGO AND THEY ALSO UPGRADED FIRMWARE AND INSTALLED A IEEC POWER SOCKET , PLEASE CHECK PICTURES. THE FLIGHT CASE IS GREAT AND I´LL SHIP THE SYNTH INSIDE THE CASE WITH THE PRINTED MANUAL, EXTRA FUSES AND POWER CORD.” Link

Drumtraks, Sequential Circuits @ 02 November 2017, Comments Off on Sequential Circuits Drumtraks

“Classic 1980s drum machine with MIDI capability, used by Prince and many more. This model has been lovingly cared for in a smoke free studio and is in fully functioning order, no scratchy pots or sticky buttons. It was recently serviced and a replacement CEM chip added. It is in excellent cosmetic condition bar a small paintwork scratch on the front (pictured)” Link

Prophet 600, Sequential Circuits @ 02 November 2017, Comments Off on Sequential Circuits Prophet 600

“Selling my 1982 Sequential Circuits Prophet 600 along with the case. Everything works perfectly as the person who owned before me was a sound engineer. Great value for a vintage analog synth! Does not have Gligli update.” 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

Sequential Circuits, Six-Trak @ 26 October 2017, Comments Off on Sequential Circuits Six-Trak

” Up for auction is this vintage Six Trak Analog Synthesizer by Sequential Circuits Inc. I am just the second owner and have used it sparingly (probably less than 5 hours total – really !! ). It is in excellent condition and everything on the unit works (no issues). There are just a couple minor scratches on the back but other than that you would be hard-pressed to find one in better condition.” Link

Prophet 600, Sequential Circuits @ 26 October 2017, Comments Off on Sequential Circuits Prophet 600

” For sale is my Sequential Circuits Prophet 600 synth. It’s fully functional and in nice shape. It does have some wear so be sure to check out the pictures to make sure you like it. Classic vintage analog SCI synth, don’t miss out. ” Link

Sequential Circuits, Six-Trak @ 26 October 2017, Comments Off on Sequential Circuits Six-Trak

“Up for auction is a Sequential Circuits Six-Trak vintage analog synthesizer. This model is notable for being one of the first multi-timbral synths, equipped with MIDI and an on-board six-track digital sequencer. The unit is fully functional with one exception; track 5 does not work. Everything else on the synth is good. Physically it’s in good shape, with a repaired crack in the wood (see pics). Other than that it just has a few minor cosmetic marks here and there, typical of a 30 year old used piece of gear.” Link

Pro-8, Sequential Circuits @ 26 October 2017, Comments Off on Sequential Circuits Pro 8

“Pro-8 is the Japanese version of the Split-8. An extremely underrated synth with a distinct sound. It has been recently serviced and sounds excellent.

The instrument can be 8 note polyphonic, offers powerful 8 note unison and, in dual mode, you can also layer two sounds for rich, 4 note polyphonic textures.

Furthermore, sounds can be edited when in dual mode, so that sounds created can be very complex and versatile.

Even though it does not have separate controls for every parameter, programming the Pro-8 is very easy, thanks to very smart parameter-selection matrix.

It also comes with an original flight case and voltage transformer. ” 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

Prophet 2002, Sequential Circuits @ 19 October 2017, Comments Off on Sequential Circuits Prophet 2002

“It is in nearly great condition as you can see from the photos. Comes with two original disks, a handful of custom disks of my own, and digital copies of dozens of disk images. This particular sampler has had the 512K memory upgrade installed. There is a software editor available online.

Schematic and service manuals are available as PDFs, however this unit is in perfect working order – checked it out yesterday.

I believe this sampler is a hidden gem, sounds just as good if not better compared with EMU Emulator II. Feature and sound-wise one of the best designed samplers and sound quality. It also has a very nice MIDI arpeggiator that is unique. Leave it to Dave Smith for the ingenuity of this beast.” Link

Prophet 3000, Sequential Circuits @ 19 October 2017, Comments Off on Sequential Circuits Prophet 3000

“Sequential Circuits Prophet 3000 sampler, new OLED display, latest firmware, factory disks,
One owner, unit never left home studio.
Everything works!” Link