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Sequential Circuits Prophet 600 Project Machine

“Only one owner! Low serial number 122. Ran when parked.

The owner bought this new in 1983 in Colorado Springs. The unit went on tour for a few years, but has sat in its case for many years.

Included is a “Star Case.” The foam on the inside could use renewing.

Also included is an original manual and a controller foot pedal. We are not sure if the pedal works.

There is also an original tape with the matching serial number of 122.

This unit has intermittent keys and sold as non-working for parts only.

THIS IS NOT A FULLY FUNCTIONAL UNIT.

The unit will be shipped in the case, not in a separate cardboard box.” Click here to visit listing on eBay

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Sequential Circuits Pro One

“Original Sequential Circuits Pro One Synthesizer Model 100 #4807 J Wire Keyboard.
Bought this from the original owner. Comes with OG manual(damaged but completely intact) and all functions working even tested the CV/Gate inputs. Very clean and recently serviced in Oakland, CA. Minor scratches and old tape residue pictured. All keys working though I would upgrade it with the Techsmechs TM-2 as this is the original J-Wire keyboard. ” Click here to visit listing on eBay

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Sequential Circuits Six-Trak

“Great condition, see pics

Works great 100%

Original box and packaging

Original manual

Printed out schematics

Updated software

CEM chips were updated when you could still get CEM chips” Click here to visit listing on eBay

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Sequential Circuits Prophet 600 Project Machine

“Only one owner! Low serial number 122. Ran when parked.

The owner bought this new in 1983 in Colorado Springs. The unit went on tour for a few years, but has sat in its case for many years.

Included is a “Star Case.” The foam on the inside could use renewing. Also included is an original manual and a controller foot pedal. We are not sure if the pedal works.

There is also an original tape with the matching serial number of 122.

This unit has intermittent keys and sold as non-working for parts only. ” Click here to visit listing on eBay

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Sequential Circuits Six-Trak

“CONDITION: SOLD AS IS! I am not an expert when it comes to this item & have no idea how to properly test it. The unit appears to turn on and respond to pretty much all the inputs I selected, please watch the provided video for the test I did. This is the extent of the testing that was done which is why it’s sold for PARTS/REPAIR. Expect this unit to not fully function or need some work, but if it ends up being fine then you lucked out!
Shows some normal signs of cosmetic wear & age. Some marks and signs of aging throughout, the wood has some minor flaws. Overall its in pretty nice shape for the age. The cord is intact with no issues. We are open to offers or local pickup in NJ to save on shipping” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“Looking for a professional-grade synthesizer? Check out the Sequential Circuits 400 Drumtraks! This powerful machine is perfect for creating intricate drum patterns and sounds, making it a must-have for any music producer. With its sleek design and top-of-the-line features, the Sequential Circuits 400 Drumtraks is sure to impress even the most discerning synthesizer enthusiast. So why wait? Order yours today and start creating amazing music like a pro!

It’s turning on and it plays but 2 Circuits not playing” Click here to visit listing on eBay

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Sequential Circuits Pro One

“Rear paint damaged by previous owner on removing stickers.

Recently replaced keys with a Fatar keyboard TM-2 from techsmechsvintagesynth.com so the synth plays beautifully.

Also capped the knobs with Prophet 5 caps.

This synth is fully working and sounds brilliant.” Click here to visit listing on eBay

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Sequential Circuits Pro One

“Vintage Sequential Circuits Pro One Analog Synthesizer

Brand New Techsmechs TM-2 Keyboard installed (over $250 value) which is a huge upgrade. Plays perfect!

Keyboard has just been cleaned, tested, and tuned. Ready for action!” Click here to visit listing on eBay

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Sequential Circuits Prophet 2002

“Tested and working. Has scuffs due to age/wear. Audio is overall pretty clean. Keep in mind these are old machines that have quirks (such as these unit do not have true stereo, you have to pan each output). Ships with generic power cable.

Ships with Sequential Prophet 2002 unit and generic power cable only. Nothing else in pictures is included.” Click here to visit listing on eBay

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Sequential Circuits Prophet 2000

“Good working order, with new disk drive. No issues. Small chip on one key and some cosmetic wear. All membrane buttons work well. Very unique and gritty sampler in hard to beat condition. ” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“This was originally purchased on a whim on eBay in the ’10s: serviced and in 100% working order. (I had a short lived 80s / music phase) It was basically unused, treated & care-taken with respect, & until recently had been protected pretty much untouched in storage for about 10+ yrs — The video here- is the initial play test after storage intended to demonstrate sound.

This was packed/treated with care, and put away in perfect working order to store (climate controlled) a bit over 10 years ago.

—

To my limited knowledge from the test, everything appears to still be working great, aside from:

Ch5: open high hat

Ch6: claps

Since they were 100% fine before storage I believe this is just something in need of a tune up, or a little loose wire or oxidation on a wire somewhere — If the sound chips need to be replaced they should be available for $15-$20.

—” Click here to visit listing on eBay

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Sequential Circuits Pro One

“IN ORIGINAL CONDITION ALL KEYS/SLIDERS/KNOBS/OUTS FULLY WORKING HAS ORIGINAL KEYBOARD WHICH IS A BIT CLUNKY PERSONALLY I HAVE ALWAYS PREFFERED IT THIS WAY FEW MARKS AND SCRATCHES BUT IS 40 YEARS OLD.. MY NAME IS JAIME READ(LHAS) AND I HAVE BEEN RELEASING MUSIC FOR OVER 30 YEARS THIS IS PART OF MY STUDIO SET UP AND HAS NEVER BEEN GIGGED OR IN A SMOKE ENVIRONMENT ALL ITEMS CAN BE TESTED BEFORE PURCHASE YOU CAN COLLECT FROM CRAWLEY OR LIVE WITHIN 50-80 MILES I MIGHT CONSIDER FURTHER AFIELD BUT BUYER WILL PAY PETROL AND SOME COSTS DEPENDING ON WHERE YOU ARE NOT SURE I WOULD TRUST A COURIER…AND WOULD FEEL ALOT BETTER FOR YOU TO BE HAPPY.” Click here to visit listing on eBay

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Sequential Circuits Prophet 5

“For sale is a rare vintage Sequential Circuits Prophet 5 Rev 2 61-Key 5-Voice Analog Polyphonic Synthesizer. The Rev 2’s tend to be the most coveted holy grail version of the Prophet 5 due to the design implementing SSM chips rather than later Prophet 5 Rev 3’s Curtis chips. The Rev 2’s have a more raw, bold aggressive sound that some consider to be the real classic tone that a P5 should have. This one is tested and fully functional. Previous owner bought it from a synth shop that tends to refurbish all their items for sale so it’s likely been gone through as needed in the past. Includes high quality dust cover. It’s in excellent shape for its age, with most of the wear as expected on the bottom surface. The top and sides are in great shape with minor signs of wear. This example has been well taken care of.” Click here to visit listing on eBay

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Sequential Circuits Pro One

“This vintage Sequential Circuits Pro One 100 Monophonic Analog Synthesizer Keyboard is a must-have for any serious musician or collector. With its 37 synth keys and analog construction, it’s a unique piece that will add character to any studio or stage performance. Made in the United States in the 1980s, this keyboard synthesizer is a true gem of the era. Whether you’re a seasoned musician or just starting out, the Pro One is sure to inspire you. One potentiometer is scratchy. My just need cleaning. That said. I am not sure of the complete functionalty of synth. I downloaded the programing guide and played around with it. Not knowing what it’s supposed to sound like. I am selling it as is. Yours to refurbiah if needed. ” Click here to visit listing on eBay

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Sequential Circuits Multi-Trak

“Sequential Circuits Multi-Trak synthesizer from 1985 in excellent working and cosmetic condition. Listing includes the synthesizer, original manuals and power supply as shown.”
Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Sequential 600 analog polyphonic synthesizer from the 1980’s. Very good condition. A few scuffs and scratches here and there but functionally good. All controls work well. 6 voice polyphony. 2 on board sequencers. 2 oscillators per voice. PolyMod feature similar to Prophet 5. 100 patch memory locations. 2 Arpeggio functions. Latest OS installed so no issues with MIDI. Includes power cable, operation manual and service manual. Prefer local pickup but will ship.” Click here to visit listing on eBay

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Sequential Circuits Six-Trak

“I tested all the keys and it seems OK.

It was really used that much.

Very expensive when my dad bought it.

This was the keyboard to have

6 separate wave sources

Does not have the end panels” Click here to visit listing on eBay

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Sequential Circuits Six-Trak

“The following services were just done, which cost me over $250! IF you find another one for less than what mine is selling for, and since most of the used ones out there, that are supposed to be “fully functional”, turn out NOT to be; you will then need to find someone who would work on these (which is very rare nowadays), and then who knows how much it would cost to make it fully functional??! Especially since these synths are over 40 years old, which means unless they had just been serviced, hardly any of them would be fully functional; and CONDITION IS EVERYTHING!

SERVICES DONE:

Full inspection
Load tested for 2 hours
Key-bed serviced
All sliders/knobs serviced
All contacts cleaned
All buttons serviced
Cleaned inside and out” Click here to visit listing on eBay

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Sequential Circuits TOM

“Up for sale is a great example of the Sequential Circuits TOM.

The unit has been recently serviced – this included installing a new set of front panel switches, cleaning the trigger buttons and also installing the Tauntek TOM16 sound bank upgrade.

The TOM16 upgrade gives you 16 sound banks to select from, adding hugely to the sonic potential of the unit. This is v1.2 of the upgrade and includes the option to allow external cartridges to be used at the same time.
Also included is the HKA Classics Cart with 8 banks of DX/DMX/LM1/Linndrum sounds.

Cosmetic condition is really tidy, with only minor marks and blemishes.

The unit is 100v, so a step down power transformer may be required depending on your location. ” Click here to visit listing on eBay

Categories TOM

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Sequential Circuits Prophet VS

“Prophet VS for sale

This Prophet VS is is good condition and sounds wonderful.

Because this is an old vintage synthesizer, I want to note a few things to be as transparent as possible related to its condition:

The internal power supply seems to give some vibration off. You can hear a very slight audible hum, and can feel a slight buzzing on the left side of the keyboard when your hands are on the keys. A replacement power supply would probably be a good idea at some point. But all in all the power works just fine otherwise.

The buttons all work, but sometimes a couple of them seem to press twice when you press once, or you need to press twice to press once. This seems fairly normal for a synth this age. I’d recommend either cleaning or replacing some of them as needed, but they are still very much usable as-is.

The LCD is original and the backlight is still bright.

The aftertouch does not work. I believe this is a common problem and would need to be addressed if you want to use aftertouch.

Firmware is 1.0. There are a few different options for upgrades to firmware. This version:

v1.0 – Has Diagnostic features and free-running LFO’s

All voices work, filter, chorus, voice panning, detune, modulation, splits, doubles, the joystick, buttons, data slider, LCD, volume, balance, storing, s&h, mod wheel, pitch wheel, both L/R audio outputs, and MIDI in and out. I have not tested the cartridge port or foot switch ports.

Voltage is set to 110v” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Vintage Sequential Circuits Prophet 600 analog synthesizer in Excellent Condition with pedal in case. I’m not a keys guy, but plugged in and all controls seem to work, all keys working, sounds good to me. Very clean cosmetic condition. Located in Columbus Ohio zip 43231, local pickup would be fanstastic ….” Click here to visit listing on eBay

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Sequential Circuits Split-Eight

“Split Eight analog synth. We bought this as part of a large studio buy out. Most items we are keeping, some we have no need for, we are selling.. this is one of those items.

It turns on, but we cant get audio on most all of the keys and the presets seem blank. No further testing has been done. Sold as parts, as is. ” Click here to visit listing on eBay

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Sequential Circuits Prophet 2002

“prophet 2002 from Sequential.

This was one of the final products Sequential made before they went under. But that doesn’t mean it’s bad!

It is a vintage sampler, that has Sequential’s flavour. So what does that mean? Rich and deep sound, with Prophet filters. Absolutely lovely sampler and something a bit different to the usual AKAI and EMU fare.

It has a, how shall we say, quirky UI which takes some time to grip. However, like anything, once learned it is easy.

This one has been updated with an SD card reader, so no need to mess around with floppy disks. Comes with an SD card with a load of beautiful sound sets already loaded.

Why am I selling? Downsizing, I went a bit nuts with samplers. Because I think something seriously special happened during the 80s with digital/analogue hybrids. A very unique sound that is hard to get without the real hardware. But sense has had to prevail and I have decided to keep my EMAX, Mirage and Sampletrak (those who know, know).” Click here to visit listing on eBay

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Sequential Circuits Multi-Trak

“Hoping to find a good home for a much loved Sequential Multi-Trak. It’s in good condition with a few scratches and scuffs. The battery has been replaced with a new battery in a battery holder, making future battery changes a breeze. Note: This Multi-Trak does not have the battery drain issue. It’s a fantastic synth!

Original power supply included. ” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Serviced and appears to be fully working. Shows very little signs of use. Fantastic sound and an overall gorgeous instrument. I’ve priced this at the lower end of what these sell for and considering average completed sale prices, the service, and physical condition, this is the lowest I will accept and I believe it represents a fantastic value on a highly appreciated vintage analogue synth.”
Click here to visit listing on eBay

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Sequential Circuits Pro-One

“- In fair condition
– The power switch on this unit is missing, so we were unable to fully test it. However, when it is plugged in, the red LED Gate indicator will light up. So it may just need to have a new switch installed. We cant guarantee the extent of this unit’s functionality.
– Includes Power Supply
– See All Photos” Click here to visit listing on eBay

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Sequential Circuits Six Trak

“Sequential Six Trak – this is somewhat of a hidden gem. underground niche synthesizer, being not over-popular, but still sweet, and undiscovered by too many.

it’s 6-part multitimbral and 6-voice.

means that it can be a straight forward 6-voice poly, but also each voice can have it’s own preset assigned to it, and they even can be assigned to different midi channels, and sequenced using internal built in 6 track sequencer, or external midi!!!

great thing, is fully working, everything is great, and even has the original box!!!

shown on the last picture. the box is a bit tired, but still is a box, and is original, from the 1984 itself, what a treasure.

has couple of minor downsides – the push buttons sometimes are a bit temperamental, they can react as if they are double pushed, but it doesn’t happens often.

also the power cable has some insulation tape on it. shown on one of the last pictures. I know that this is not really good, but there are no issues with it. potentially and ideally the power cable would have to be changed. I can do it at some point, just need to find some time. for now it’s sold as described and as shown. you probably shouldn’t have any issues with the cable, or with replacing it.” Click here to visit listing on eBay

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Sequential Circuits Prophet 10

“The triumphant return of Sequential Circuit’s Prophet 10, signed by the Horror Master himself, Mr. John Carpenter.

[The Story] I purchased this synthsizer direct from Sequential in 2020, shorly after it’s initial release and have owned it ever since. Being a massive John Carpenter fan, and noting he created a lot of his famous score work on the original Prophet 5, I sought out to have him personally sign this keyboard. This autograph was aquired on August 12th, 2022 at the Monroeville Convention Center’s Steel City Con via a brief VIP meet and greet with Mr. Carpenter. It was autographed along with one other item I brought along, a model of the Christine movie car.

[The Details] I am the original owner of this synthesizer and it has never left my climate controlled studio. I would rate this unit in mint condition. No visible blemishes, scuffs, dents or scratches. Functions as expected. Please see photos.

Unit comes with power supply, framed comemorative poster, and full sized soft road case. No original manual or box included.

Unfortunately, I am unable to provide any sort of certificate of authenticity verifying the signature on this item.

Unit ships free within the USA only. No international shipping offered on this item. No returns – item is sold as is.

Unit will be carefully shipped via UPS, fully insured to the winner of this sale. I will ensure that the signature is preserved during the shipment.”
Click here to visit listing on eBay