Sequential Circuits

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Sequential Circuits Prophet VS

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“The rack VS is extremely rare and highly coveted, this particular one works and sounds great!!!

Note: slider is missing original cap, but the slider itself is 100% functional and very easy to use. These caps are very easy to find. ” Click here to search for synths on eBay

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Sequential Circuits Prelude

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“Get on the road and play some gigs. Powers up and works. Tested with Fender Power Chorus amp… also for sale… see my other listing if interested.

All of the features, keys and settings seem to work to the best of my knowledge.

Sold as is. Has some rust and wear. See photos for the condition of the unit.”
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Sequential Circuits Prophet 600

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“Sequential Circuits Prophet 600, in excellent condition.
This synthesizer is in excellent condition, though it does show some tiny signs of age.
It is fully working, have been cleaned and refurbished.
All the knobs have been cleaned and lubricated.
The keyboard has been rebuilt, every keys are working correctly without double triggering.
The unit has been calibrated following the factory specifications.”
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Sequential Circuits Pro One

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“This one is in excellent cosmetic condition and working 100%. It is ready to be played and needs nothing! As the title says, this one has the Turbo CPU Upgrade with Midi (no holes were drilled into the metal housing). It does have the j-wire keyboard so it can be serviced in the future.”
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Sequential Circuits Prophet 600

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“SEQUENTIAL CIRCUITS PROPHET 600 SYNTHESIZER.

Condition is Used. Works well but…………………SOMETIMES…………

Does have an intermittent fault on some start ups, the Synth goes into edit mode at times, this clears after 5/6 re-starts, maybe in need of a service.

The Synth was gigged regularly throughout the 80’s and early 90’s but has not been gigged since 1993. Only used occasionally at home.

No updates or modifications have been applied.

It was serviced by “Synth Repair Services in Stoke -on -Trent on 26th Nov 2012. (Copy of Invoice in Photos)

All the keys work, as does all the Knobs and Pitch Wheels.

It comes with the operation manual, the condition of this is well used., I do not have the original tape to upload the original patches.

There is a flight case that was made for the synth, which comes with it.

The condition is well used, with cosmetic damage..See photos. ” Click here to search for synths on eBay

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Sequential Circuits Prophet VS

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“Up for sale is our Sequential Circuits Prophet VS Vector synthesiser.

The VS is in superb working condition, a new backlight has been fitted and the synth has been thoroughly tested. All buttons, switches, pots and keys work as they should. The aftertouch has been confirmed to be fully working.

Cosmetic condition is excellent, with only minor marks and blemishes.”

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Sequential Circuits Six Trak

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“Vintage Sequential Circuits SIX TRAK 6 , Analog Synthesizer with case! In very good cosmetic condition, but I cannot figure out how it all works. I have made patches and sometimes it stores them and sometimes not. Also cannot figure out how the sequencer works. All keys seem to work fine and I have been able to make some really nice sounds from string synth to weirdo harsh stuff. Maybe it has issues or maybe I just can’t figure it all out?
Thus selling as-is, no returns for less than market value. Case is an excellent fit and will make the shipping secure, but expensive.”
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Sequential Circuits Pro One

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“My beloved Sequential Circuits Pro-One analog synthesizer with original operation manual and technical manuals in their original SCI binders.

I am the second owner of this iconic synth.

J-wire keybed model – also with the improved power supply arrangement chassis mounted OFF the PCB.

In great condition with some wear here and there, some markings on the lower keys – see photos.

Please note that volume pot is a bit tilted, not a huge deal unless you’re ocd.

Newer solid walnut side cheeks.

Just had in for service including: replaced bypass caps; cleaned pots, switches, key contacts; tuned & scaled.

Sounds great, classic sounds and textures unlike anything else.

Would love to keep it but I am going a different direction and have limited space.”
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Sequential Circuits Pro One Project Machine

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“GOT THIS IN AN ESTATE SALE THE GUY HAD A LOT OF THIS KIND OF STUFF AND THE PERSON HAVING THE SALE SAID HE WAS A MUSICIAN OF SORTS AND ALL THE EQUIPMENT WORKED. I HAVE NO IDEA HOW TO WORK THIS THING I FOUND OUT. IT WAS MISSING THE FUSE AND RED COVER WHICH I ORDERED ON EBAY AND PUT IT IN AND THE MACHINE TURNED ON. MY NEIGHBOR BROUGHT OVER HIS CRATE AMP AND WE HOOKED THIS PRO ONE UP TO IT AND IT SEEMED TO CHANGE SOUNDS BUT NEITHER OF US HAVE ANY KNOW HOW TO ADJUST THIS OR WHAT THE THIS THING CAN DO. SELLING IT AS-IS, NO WARRANTY OR RETURNS. NOTE IT IS MISSING ONE KNOB AND HAS SOME MINOR SCRATCHES ON THE UNDERSIDE AND A COUPLE NICKS IN THE WOODEN SIDES.”
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Sequential Circuits Model 800 Sequencer

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“SEQUENTIAL CIRCUITS MODEL 800 SEQUENCER for use with analog synthesizers. Condition is Used.
I am the original owner and purchased it new in the late 70s’ and used it a lot back then with a Micromoog. It has not been used in many years, however, it appears to be in working condition. There are a few small scratches on the top of unit (see photos). Footpedal and manual are included.”
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Sequential Circuits Prophet 5

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“Unit was tested and remains in working condition with minor defects. 3 rotary potentiometer needs replacement due to broken plastic cap, has problem detecting program #7. Please check all available pictures.”
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Sequential Circuits Prophet 600

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“SEQUENTIAL CIRCUITS PROPHET 600 Analog VINTAGE SYNTHESIZER Midi Keyboard for sale.

Has been stored away in case for a long time now so condition is in tact and very good. Comes with original manual as well. This item has been part of my private collection which I am now selling.

I think it has one faulty voice chip or filter. I am not sure. Price has been lowered to make up for this.”
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Sequential Circuits Pro One

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”
SEQUENTIAL CIRCUITS PRO ONE ANALOG J-WIRE KEYBOARD / SYNTHESIZER.
SERIAL NUMBER = 6330 Includes Operations Manual and Additional Schematics!

This was the Astonishlngly FAB Keyboard / Synth used by Vince Clarke for Most of the Awesome Sounds heard on the LPs; ‘Upstairs At Eric’s’ & (partially) on ‘You And Me Both’.

Please, keep in mind that although this Keyboard / Synth was one of the COOLEST synths ever created in the history of mankind , Some of the Models did ship from the factory with the following Terrible Faults:

(1) All Pro Ones with Serial Numbers ABOVE # 8500 used the Cheap, Terrible (and Faulty!) MEMBRANE Keyboards.

(2) All Pro Ones with Serial Numbers BELOW # 1500 were the ones with the Power Supply (including Heavy Transformer) Mounted on the Printed Circuit Board!

This particular Pro One does NOT fall into Either of these 2 catagories so, you are getting the Preferred J-WIRE Keyboard as well as the also Much more preferred keyboard that has the Power Suppy (including Heavy Transformer!) Mounted on the Metal Chassis where it is much more Stable and less likely to Crack the PC Board which was a common occurrence with those keyboards w/ Serial #’s under #1500. ”
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Sequential Circuits Six Trak

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“Sequential Circuits Six Trak – Analog Synthesiser

Absolutely amazing analog synth – really sad to see it go but i need the room as I’m down sizing my studio – fully serviced and works perfectly

Sound incredibly warm and rich and six track has a really cool arp function as well as midi in & midi out

Thanks for looking

Dan ” Click here to search for synths on eBay

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Sequential Circuits Pro One

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“SEQUENTIAL CIRCUITS PRO ONE ANALOG J-WIRE KEYBOARD / SYNTHESIZER.
SERIAL NUMBER = 6330 Includes Operations Manual and Additional Schematics!

This was the Astonishlngly FAB Keyboard / Synth used by Vince Clarke for Most of the Awesome Sounds heard on the LPs; ‘Upstairs At Eric’s’ & (partially) on ‘You And Me Both’.

Please, keep in mind that although this Keyboard / Synth was one of the COOLEST synths ever created in the history of mankind , Some of the Models did ship from the factory with the following Terrible Faults:

(1) All Pro Ones with Serial Numbers ABOVE # 8500 used the Cheap, Terrible (and Faulty!) MEMBRANE Keyboards.

(2) All Pro Ones with Serial Numbers BELOW # 1500 were the ones with the Power Supply (including Heavy Transformer) Mounted on the Printed Circuit Board!

This particular Pro One does NOT fall into Either of these 2 catagories so, you are getting the Preferred J-WIRE Keyboard as well as the also Much more preferred keyboard that has the Power Suppy (including Heavy Transformer!) Mounted on the Metal Chassis where it is much more Stable and less likely to Crack the PC Board which was a common occurrence with those keyboards w/ Serial #’s under #1500.

Having said that, the reason I am selling my Pro One is that suddenly, inexplicably the keyboard just STOPPED functioning properly! Only a few of the keys (4-5?) now trigger at all. Not sure what led up to this but, I did notice last year that some of the keys were starting to make a ‘crackly’ noise when pressed and were often failing to completely trigger their related notes.

That being said, ALL of the other functions of this Keyboard/Synth operate Correctly. I have tested and re-tested EVERY KNOB, EVERY SLIDER SWITCH, EVERY OTHER FUNCTION of this Fabulous Synth and EVERYTHING ELSE OPERATES CORRECTLY AND VERY WELL Including the SEQUENCER (both A & B Patterns) and BOTH the BEND & MODULATION WHEELS.
All is in Good order EXCEPT for the Keyboard. So, therefore I must sell this Item AS IS Due to a faulty Keyboard. Also, note that as pictured the very highest key has broken off at the fragile little plastic knob where it hooks up underneath to the chassis. I have provided pictures illustrating this and will also provide the complete key and essential little spring so, that you can try and repair it by gluing it back on if you’d like.”
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Sequential Circuits Split-Eight Project Machine

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“Sequential Circuits SPLIT-EIGHT

I recently purchased it from the original owner!

She used it briefly in the day, for in a home studio

*WORKING* .. meaning it powers up,

and all controls respond

Overall .. what does work, sounds great.

SEEMS TO HAVE AN ISSUE:

WEAK NOTE GROUPS ACROSS THE KEYBOARD?

Fyi ~ I’m too busy with B-3 & Leslie restoration.

No time to spend time on this.

Leaving dealing with the issue to you.

I gave it a careful light external cleaning .. that’s it.

***Average Cosmetics ~ MANY nicks & scratches

****OF COURSE THE PRESET BACK-UP BATTERY IS DEAD,

and no factory pre-sets remain in memory ”
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Sequential Circuits Pro One

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“Super-Cool Early 80’s Vintage Analog Synth!

Sequential Circuits PRO-ONE

I recently purchased it from the original owner!

She used it briefly in the day, for “left hand bass” in a home studio

*WORKING* .. meaning everything works

ALL controls work as expected.

SOUNDS GREAT!

Serial #9080 = Membrane Keyboard

Consequently, a few keys are “Fussy” ..

Fyi ~ I’m too busy with B-3 & Leslie restoration.

No time to spend time on this.

Leaving detailing to you. I gave it a careful light external cleaning .. that’s it.

*POWER SWITCH is very STIFF..

Leave it in ON position and use power strip?

*Dusty

**Wood sides very dry

***Typical nicks & scratches

( over the last 40 yrs, I’ve owned many Moog / ARP / Oberheim / Sequential ..

Rhodes / Wurli / B-3 / Roland / Yamaha / misc rare analog synths )

Please Check My Feedback.” Click here to search for synths on eBay

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Sequential Circuits Prophet 5 Rev 3.0

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“This is the original polyphonic analog synthesizer. Prophet 5 #1000-1873 Revision 3.0 with 40 programs. In excellent cosmetic and musical condition. Comes with completely re-foamed Anvil Road Case and Original Owners Manual. Just serviced by Wine Country Sequential; folks who used to be Sequential Circuits. Rev 3.0 did NOT come with MIDI, but I understand it may be added. Contact Wine Country Sequential for confirmation. ”
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Sequential Circuits Pro One

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“Sequential Circuits Pro One Vintage Keyboard Synthesizer.

Item has been tested and is not functioning properly.

Keyboard function is not working properly, light stays on and machine thinks a key is constantly being pressed, gate stays open.

Selling AS-IS

Please see all photos for more information.

(3065195-2)”
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Sequential Circuits Six Trak

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“This sale is in aid of my local Hospice Thrift Store, where I volunteer working on electronics. I sell items here for the store that don’t readily sell in house, alongside my normal vintage audio business.

Along with the more routine items that the generous donors contribute is the occasional gem and this is a fine example, a Sequential Circuits Six-trak.

I’ve occasionally dealt in synthesizers over the years but never had the pleasure of checking out an analog synth of this level. Fortunately the manual is available on line and I’ve checked every control and display, checking tuning, level controls, polyphonics, parameter change (I had a lot of fun with the glide parameter set to max and the arpeggiator), recording and playback, including getting two tracks recorded and playing back simultaneously. Audio output was clean.

I haven’t checked the midi functionality and offer no warranty in that respect, however you may draw the conclusion that a full check out as noted above makes that low risk. If you are local, I’d be happy to arrange for you to check out midi yourself BEFORE purchase.

This will be shipped carefully packed using closed cell foam (not expanded polystyrene) to secure and protect the keyboard.”
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Sequential Circuits Prophet 5

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“Sequential Circuits Prophet 5 Keyboard Synthesizer. Condition is Used. A few minor imperfections in the wood, nothing major. Recently serviced at Wine Country. Studio piece and has never been on the road. I bought it new and have been its only owner”
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Sequential Circuits Prophet 600

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“SEQUENTIAL CIRCUITS PROPHET 600 SYNTHESIZER.

Condition is Used. Works well but…………………SOMETIMES…………

Does have an intermittent fault on some start ups, the Synth goes into edit mode at times, this clears after 5/6 re-starts, maybe in need of a service.

The Synth was gigged regularly throughout the 80’s and early 90’s but has not been gigged since 1993. Only used occasionally at home.

No updates or modifications have been applied.

It was serviced by “Synth Repair Services in Stoke -on -Trent on 26th Nov 2012. (Copy of Invoice in Photos)

All the keys work, as does all the Knobs and Pitch Wheels.

It comes with the operation manual, the condition of this is well used., I do not have the original tape to upload the original patches.

There is a flight case that was made for the synth, which comes with it.

The condition is well used, with cosmetic damage..See photos.”
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Sequential Circuits Six-Trak

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“Sequential Circuits Six-Trak Synthesizer w/ OSC Output Mod/New Firmware/Battery. Condition is Used.

Six-Trak synth in solid physical condition. Everything works, plays and sounds great. The battery has been replaced and all contacts have been cleaned. Surface marks & scratches are visible, and the mod wheel has a crack going across the surface. Please see photos. This does not affect playback or use.

The inside is a small DIY mess of wires and breadboards to make the separate outputs possible. If this is a concern, message me and I can open it for photos. There is some floor noise when using the separate outputs with quieter sounds, but a gate worked fine.

The mod output with a stacked & detuned unison really makes this synth unique and one of a kind. Unfortunately for me I’m moving and need to limit what I can bring.”
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Sequential Circuits Prophet 600

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“I’ve had this synth for about 7 years. It sounds fantastic, looks beautiful and clean, and I’m sure I’ll regret selling it. From what I’ve tried, the new DSI synths don’t come close to the raw immediacy of this sound.

This P600 was acting up and had a recent trip to Wine Country Sequential last year to fix some underlying bugginess. In the time I’ve had it it has seen an almost entire replacement of the digital control ICs for the panel controls, as well as the replacement of all the original plastic potentiometers with nice metal, panel mounted, buttery smooth metal pots, and a new production membrane pad. It also has a new battery, brand new EPROM, and all original factory presets loaded in.

While it is completely up and running (and sounding amazing!) one of the filters doesn’t quite track. If interested, I can answer any questions or send sound samples regarding this.”
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Sequential Circuits Prophet 600

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“SEQUENTIAL CIRCUITS PROPHET 600 SYNTHESIZER.
Condition is for parts or not working. It switches on but it is faulty.
I have had this for many years, when it stopped working i thought i’d get it refurbished.
That was 5 years ago and i have done nothing with it so here it is for sale. I have the original (tatty) manual.”
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Sequential Circuits TOM

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“I am original owner of this Sequential Circuits TOM.

Purchased in 1985, this TOM is in very good condition.

Battery backup of program and sequence memory is working.

Sounds are working well. I am also including two original cartridges with additional sounds.

If you are looking for a vintage drum machine with a cool feature set, this could be a good fit for you. ”
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Sequential Circuits Prophet 5

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“Please be aware whilst the synth is working it does need some TLC and probably a good service. It has two dead keys in lower register, and needs patches reinstalling, which is apparently straight forward but I haven’t got around to it.

The casing is worn but good. This a bargain for a synth that is only going up in value and often going for £6k plus now! Probably needs about £50-100 spending on it to be in perfect working order.

Serial 2293. It’s a Rev3 with factory MIDI.”
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Sequential Circuits Poly Sequencer Model 1005

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“This is a vintage Sequential Circuits Poly Sequencer. Cosmetically, the sequencer is very clean and is good overall condition but the digital interface cable connection exhibits corrosion (see pictures). The sequencer is fully functional and operates as intended.”
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