Sequential Prophet 600

“This synth was recently serviced by Wine Country in California and is working very well! All functions are working as intended. A brand new membrane panel was installed so all pushbutton keys are easy to press and reliable. The synth was fully recapped.

The key bed was also cleaned and all keys are working well with minimal dropped notes as long you don’t play with a very light touch.

A print out of the manual / service manual is included in a binder, along with the Wine Country program patch cassettes and the original faulty parts they pulled, along with the original CPU chip that can be reinstalled if you would prefer to revert the Prophet 600 to a non-gligli “stock” condition.

The synth will be packed very well and will ship with full insurance.”
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Sequential Circuits Prophet 5 Rev 3.3

“Vintage Prophet 5 rev 3.3. Works perfectly, was restored by Wine Country. Has new key bushings. A little bit of screen print is rubbed off, a few of the keys are starting to yellow. Condition is 9.5 out of 10. Comes with spare original NOS pots, and original NOS chips- 3 types of cem’s and ca3280’s, original manual and service manual, restoration certificate, and a road case for storage.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

Sequential Circuits, Phophet-600, Original MIDI,
synth has seen many days on the road,
and has a broken “A” key that can be replaced for about $15 overseas,
all original equipment from 1982…

The sounds from this unit are the same sounds you get from the original Prophet 5, but under MIDI control, for complete freedom of expression…

This synth comes WITH the heavy-duty road case for secure travels, and shipping…

I don’t have the time or money to work on this anymore…

I will supply you with the technical manual for troubleshooting problems…

All the parts are there, it just stopped working, and I don’t have my test equipment anymore…

Thank for taking this off my hands… :)” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Sequential Circuits Prophet 600 w/ GliGli mod, latest update and patch set.

I’ve owned her since 2012 and barely touched her. She has been fully serviced in preparation for sale, with the latest GliGli patch and Luke Neptune Prophet 600 patch pack installed.

Perfect working order and good aesthetic condition (the odd scratch and a chunk out of one wooden cheek – please see the photos). My tech replaced an encoder pot and likely forgot to cut the post down – so that knob sticks out a few additional mm compared to the others.”

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Sequential Circuits Pro One Project Machine

“Vintage Sequential Circuits Pro One Synthesizer. Unsure if item works therefore selling as is. May or may night work or need repair. Vintage 1980s synthesizer.

UPDATE 8/28/22

Been getting alot of questions so I took more pictures. This is my Pro one. Bought it new in the 80s at Sam Ash in Queens NY. Used it a few years at home only. It has been unused for over 30 years in storage at different locations. When I used it, it always worked. Looks like the fuse has fallen out and I don’t have another or know when it was lost. I’m assuming that’s all it needs but not sure” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“SCi Prophet-600 programmable polyphonic synthesizer

Looks 9.5 of 10
In very clean condition. Please see pictures carefully.

Works 10 of 10
Everything works as specified, overhauled before shipping to have long life and to keep original sounds.

Work list (Excerpt) :

Change all elec. caps with new ones.
Change all power regulator with new ones.
Change all opamps and MUX ICs next to DAC with new ones.” Click here to visit listing on eBay

Sequential Circuits Six-Trak


You are bidding on a used “Sequential Circuits Six-Trax” Polyphonic Synthesizer with built-in 6 track sequencer in it’s original factory box with the original owner’s manual.

This vintage 49 key mono Synthesizer is priced to sell!

It’s in 100% working order.

It features “Polyphonic Mode” and “Unison Mode.”

In “Unison Mode” you can use all six oscillators for those big and fat Mini-Moog type Lead and Bass synth sounds!

I am the original owner of this keyboard.

It has been in my studio or it’s box since I’ve owned it.

This unit is in immaculate condition!

There are no scratches or heavy dings on the wood.

There are no scratches on the face or the keys.

There are just a few small blemish scratches on the bottom of the unit from a keyboard stand.

I tried to photograph the scratches as well as I could.

(see attached pictures)”

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Sequential Circuits Six-Trak

“This is a joy to own but alas I cannot do it justice. Classic sounding from a time long long and they do not make them like this anymore. Studio use only and recent repair and upgrade.

Looks great with the odd mark and scratch which is to be expected. power is direct from the back to the plug. I have also printed out most of the manual (it is not the original). The joy of playing this is that it is 6 Note poly which was a rarity back then. Most of the tech spec is on line but if you are looking at this piece of history you will know all about it anyway.” Click here to visit listing on eBay

Sequential Circuits Pro One

“Sequential Circuits pro one.

I bought this fantastic sounding mono synth about 20 years ago second hand.

The power cord is somewhat frayed where it meets the machine, but this causes no problems as yet in turning on the machine.

Also, the keyboard has some dust in it meaning that sometimes, if pressed hard some of the inputs on some keys stutter, due to the electrical connection.”

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Sequential Circuits Six-Trak

“The Six-Trak was an analogue synthesizer manufactured by Sequential Circuits and released in January 1984. It is notable for beingone of the first multi-timbral synthesizers, equipped with MIDI and an on-board six-track digital sequencer.

– Was used in home studio only, from new.

– Has been in dry storage for many years.

– Fantastic condition with NO wear marks on ether the body, keys, buttons, knobs or transfers.

– No modifications, all original.” Click here to visit listing on eBay

Sequential Circuits Split-Eight

“This unit is in good condition for its age. It shows some small scratches and scuffs however nothing major. Most wear occurs on the wooden sides which could be sanded back and re painted if the buyer chose to. Please see photos.

This unit has been serviced. The service included a deep clean inside and out, a new memory battery, cleaned all key contacts and switches.

After being serviced the synthesiser was thoroughly tested and the factory patches have been reloaded. ” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“You are bidding on a used Sequential Circuits Prophet 600 synthesizer. The keyboard is in very good cosmetic condition with some small scratches and scuffs from normal use. Everything on the keyboard seems to work fine. The power supply and data lines have new capacitors. It also has a new memory battery. There are no mods done to this synth. ” Click here to visit listing on eBay

Sequential Circuits Prophet 5

“Prophet 5 Rev 3.2 with midi, foot pedal and original manual. Bought from original owner over 20 years ago and used sporadically over that time. Keyboard bushings replaced a few years ago and recently had all the pots cleaned, mains transformer replaced and factory sounds reloaded by Gareth at Sound Control in Castleford. Only imperfection is one of the keys slightly raised but does not effect the performance or playability.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Don’t ask what is wrong with this item. 🙂 LOL

It is not too good to be true…My family is simply selling at a lower price than it is worth because we need the money and need to downsize…

This is in perfect working condition. Cosmetically, as you will see, it is really good for being over 40 years old!

Recently, it was opened up, cleaned out, including every contact. Built like a tank.

All keys work perfectly, and all knobs as well.

The is amazing what sounds can be created with this thing.


** It Comes with the Power Cord, and will be packed safely.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Fully functioning and restored – Sequential Circuits Prophet 600 Synthesizer Vintage Restored not Prophet 5. I am not a musician or a keyboard player. History of this instrument as I know it…This synthesizer has spent its life in a padded hard case. It was given to me by a co-worker back in 2013. He purchased it from Goodwill online. (However owned it prior to that took exceptional care of it.

The unit was not working and I held on to it since then. I decided last year in March to have it repaired. It would light up but not boot to program mode. I sent the unit to one of the absolute best technicians possible for this type of instruments. The unit was sent to David Sesnak of Wine Country Productions in San Jose, California. He could not believe how great the condition of this unit was cosmetically. All repairs he made totaled $746. I had him install the GliGli update as well.

The wood sides are original. I’ve included the invoice of work performed. I could not bring myself to discard a vinatge piece of music history so I am offering for someone to enjoy for years to come. Buy pays actual shipping costs. Package is 31lbs and dimensions are 51L x 25 W x 8 H. Unit will be professionally packaged.” Click here to visit listing on eBay