Sequential Circuits

Sequential Circuits Prophet 600 Project Machine

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“Synth turns on and lights up, but no sound comes from the output. Sold AS/IS for parts or repair. 2 keys and the wooden sides are missing, all of the knobs are gone, two knob shafts are broken. Dirt, dust, light oxidation, and wear are evident from age and use. Former owners stage name engraved on rear panel. There is a small chip on the underside front of one key.” Click here to visit listing on eBay

Sequential Circuits Six-Trak

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“Had this synth from new since bought in the mid 80’s. The keyboard was serviced by Cyberwave EMS last year and is in excellent working condition. Also in fantastic condition generally as you’ll see from the images. Free to collect of course but I will also deliver for free within a reasonable range of Gloucestershire. Would not recommend using a courier but can send insured if desired.” Click here to visit listing on eBay

Sequential Circuits Studio 440

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“Offering a rare and cool Sequential Circuits Studio 440 Drum Machine Sampler Sequencer. From the late 80’s early 90’s. Very low serial number. Has been very well kept, only a little evidence of use or wear. Lights up and appears to shift settings and functions. I am not an expert so am unable to test reliably. Person I got from says was tested thoroughly but I cannot confirm. It looks really clean for being 30 or more years old. Screen clear as in pics. Looks like one slider knob tip not original. All knobs look original. Has power cord. No case opr manual. Will pack very well for a safe trip. This item is being offered SOLD ASD IS condition, no refunds or returns, be aware of this.”
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Sequential Circuits Six-Trak

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“Overall good condition considering the age. All buttons and knobs operate. All keys operate. There is wear and tear that can be seen in the photos. This is a very vintage item, so please don’t expect mint condition, but it functions well and sounds AMAZING! It is a little dusty from storage and didn’t have time to deep clean, and that shows in the photos as well.” Click here to visit listing on eBay

Sequential Circuits Pro-One

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“Something very special. Fully customised Pro-One, featuring the following:

– Fully custom walnut casing 

– Kenton midi kit 

– Brand new fentar keyboard 

– Pro 5 pot and button upgrade

– Fully serviced 

All of these upgrades cost well over £1,000. What you’ve got is an absolute classic updated for the modern producer and looking gorgeous.

I will guarantee the item against functional defects for 3 months. Due to nature of the item I will only repair any defects subject to fair use.” Click here to visit listing on eBay

Sequential Circuits Prophet 5 Rev 3.3

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“Vintage Prophet 5 Rev 3.3 Flawless W Case storage find

I am a collector over decades; only kept best condition gear. I have decided to sell part of my collection.Anyone interested in a classic Prophet 5 in the best possible/ridiculous condition pls take a close look at pics… All of my gear including this has been in storage for decades and looks similar to the day it was originally bought. No issues whatsoever; tuning is very stable.

I wasn’t actually planning on ever selling this but life changes. It’s absolutely flawless physically, is the last rev which means it’s the most stable and yet sounds incredible. It does not have midi but I also have the best possible Kenton midi kit available to install on it if that’s of interest.”
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Sequential Circuits Prophet 600

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“Love this synth. Excellent condition, new wood ends, GliGli mod installed with original OS chip taped to the inside, latest RAM module installed, Synthgraphics GliGli overlay, Techsmechs Fatar keybed and upgraded Knob cabs, the whole deal! I also bought the panomod kit but never got around to installing it. It’s included in the sale. Just an incredible instrument. ” Click here to visit listing on eBay

Sequential Circuits Prophet 600

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“Sequential Circuits Prophet 600. Currently in stock configuration but can be supplied with or without GliGli mod, latest update and patch set – contact me to discuss details

I’ve owned this beast of a synth since the late 90’s and had it serviced around 5 yeas ago before putting it in storage for safe keeping. 

Perfect working order and v good aesthetic condition (some minor wear and tear on chassis and wooden end cheeks – please see the photos).

I have the GliGli CPU upgrade configured and ready to be installed but have left it in original configuration so you have the choice of experiencing it as it was setup in the factory but can have GliGl mod installed before sale if required and/or can supply the upgrade parts in a separate package so you can install/uninstall it at your leisure.”
Click here to visit listing on eBay

Sequential Circuits Prophet 5 Rev 3.3

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“I am a veteran collector over decades only kept the best condition stuff. I have now decided to sell part of my collection.Anyone interested in a classic Prophet 5 in the best possible/ridiculous condition should take a close look at pics… As a long time collector I *only* kept the best condition stuff over decades of collecting. All of my gear including this has been in storage for decades and looks similar to the day it was originally sold. No issues whatsoever.

I wasn’t actually planning on ever selling this but life changes. It’s absolutely flawless physically, is the last rev which means it’s the most stable and yet sounds incredible. It does not have midi but I also have the best possible Kenton midi kit available to install on it. ” Click here to visit listing on eBay

Sequential Circuits Pro One

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” Sequential Circuits Pro-One Vintage Analogue Synthesiser – Excellent condition and full working order, J-wire keyboard version. The classic analogue monosynth, with a huge range of sounds. Includes custom dust cover. The keyboard contacts were cleaned when I got it and it works fine, with occasional sticky contacts. It hasn’t been used for a while and would benefit from another clean if using the keyboard.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

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“Sequential Circuits Prophet 600.

One owner (me!). Includes power cable, original manual, original sound tape + 2 backup tapes. I have replaced the battery within the last 5 years but I couldn’t for the life of me tell you exactly when. Keypad works, knobs work, Pitch wheel & modulation wheel work….everything on this keyboard still works. Despite the scuffs on the wooden end pieces, the machine is in great shape. I tested it in May before I relocated to another state and it worked as it should. Unpacked in June and couldn’t locate the manual. I didn’t want to sell it without that and it has taken me this long to locate it. Lucky storage box search yesterday! So I’ve not tested it since May, but it has been sitting safely on a bed awaiting the manual. ” Click here to visit listing on eBay

Sequential Circuits Six-Trak

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“Sequential Circuits Six-Trak Synthesiser 1984.

This unit is in great condition and works as it should. Sadly the internal battery died so the synth is not storing patches or doing anything interesting other that powering up. Played fine when last used few months ago.

The battery is soldered in but could be replaced with a battery holder . Cheap easy fix, low bargain price. 100 patches can be reloaded via SYSEX bank dump as I have done in the past.” Click here to visit listing on eBay

Sequential Circuits Prophet 2000

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” Sequential Circuits Prophet 2000 Keyboard Sampler

Reluctantly selling my Prophet 2K, the classic 80’s sampler that along with the Ensoniq Mirage ushered in semi-affordable studio-grade sampling for a much broader range of musicians, and helped give birth to House Music, and Electronic music as we know it. Serviced a year ago (I’ll include the receipt, £160 spent with a top tech) and not used much since, I just don’t have the space to set it up these days, so it’s annoying my wife in the spare room. Almost worth keeping for that reason only but best to try to score some brownie points before Christmas.

It’s fitted with the excellent 2x Memory Expansion by Synthechnics (cam reform Portugal, another £100 or so), which is a modern reliable clone of the original SCi one. Membrane buttons, wheels, dials and all keys work great, with display bright and clear. In fact the tech thought that the tact switches under the membrane may all have been replaced at some point pre-me, which is a handy bit of future proofing I didn’t realise (although they always felt surprisingly good). Quite a few age-related marks and scratches here and there on the bodywork, and that’s just a bit of old tape residue on the back corner that may well come off with a bit of perseverance, but no scary damage, just a nice honest example. It comes with the UK power lead, plus the original Operation Manual, which is a rare thing, a chunky ring-binder file. Latest/last OS version chip installed too.

These are coming up for sale less and less often, partly due I’m sure to videos by Espen Kraft and others showing what these are capable of, and what they can add in a modern studio setting. So a serviced one with memory expansion and the original manual file is a rarity. I can’t see another P2K available either on reverb or on here right now in the UK, or anywhere in the world for that matter.” Click here to visit listing on eBay

Sequential Circuits Pro One

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“model # 100, serial # 2330

This Pro One is in perfect working condition. It was calibrated and it’s J-Wire keyboard was rebuilt several years ago. I bought this synth in 1990 when people were dumping analogue synths. Since that time it has been taken very good care of. When not in use it is always covered. This Pro One is missing two of its four rubber feet. This unit was in a stand so it was never an issue for me. I am selling this unit to fund purchasing some eurorack synths. I own another Pro One I bought in 1981 and a newer Behringer Pro One. ” Click here to visit listing on eBay

Sequential Circuits Pro One

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“This Pro One is in perfect working condition. It was calibrated and it’s J-Wire keyboard was rebuilt several years ago. I bought this synth in 1990 when people were dumping analogue synths. Since that time it has been taken very good care of. When not in use it is always covered. This Pro One is missing two of its four rubber feet. This unit was in a stand so it was never an issue for me. I am selling this unit to fund purchasing some eurorack synths. I own another Pro One I bought in 1981 and a newer Behringer Pro One. ”
Click here to visit listing on eBay

Sequential Circuits Prophet VS

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“This Prophet VS has been meticulously serviced and is working exactly as it should.

Tech notes:
Cleaned unit inside and out.
Cleaned all pots and key contacts.
Replaced display with a much better one that can easily be seen in the dark.
Replaced battery.
Reloaded patches.
Replaced aftertouch sensors as the originals rarely work anymore.
Replaced power supply capacitors as a preventative measure.
Reflowed certain solder joints as a preventative measure.
Performed multiple burn in tests.
Verified that all functions are working properly.

Note: As usual, the aftertouch response on the bottom and top keys may not work as well as other parts of the keyboard, due to design.” Click here to visit listing on eBay