“Here is a vintage Prophet VS. The synth exhibits some light cosmetic wear and is missing the Data Entry slider knob but is in clean overall shape. The keyboard does have a few electronic issues such as the sound which comes through is a little noisy/distorted and the arpeggiator not working correctly. The arpeggiator is not stable, depending on where the Waveform Mix knob is positioned, the rate either increases or decreases. It does this very slowly and does not stay locked in one setting. All other functions and presets work. These synths are powerful and quite rare. Now is your chance to own this awesome synth and restore it back to its full glory!”
Click here to search for synths on eBay
This website is reader supported. When you purchase items on eBay through the links on this site, we may earn an affiliate commission at no cost to you. Read our Privacy Policy for info.
“This Sequential Circuits Prophet 600 is for parts/needs repair. The keyboard is cosmetically clean overall but the left side wood panel was cracked and has been repaired (pictured). Also, the Frequency knob in the LFO-MOD section is missing. The keyboard powers on and all parameters are working but there is a total of 5 keys that do not pass any sound. We are not repairing. Selling this as is as a project synth. The keyboard mostly does work. This is a great project for a tech to get into to restore it to its full glory.”
“Sequential Circuits Prophet 600 Keyboard Synthesizer with Anvil Case, sustain pedal and original preset cassette. The synth had the battery replaced a few years ago and seems to be fully functioning as it should. There are a few nicks and scrapes on the sides and on the metal, but overall it is in great condition. Synth is sold as is since I’m not an expert, but I can’t find anything of note to mention as far as how it sounds/plays.”
“Selling for parts or to be repaired by a qualified tech. These are the known issues I’ve found:
“Vintage Sequential Circuits SIX TRAK 6 , Analog Synthesizer 49 keys, Midi equipped. Condition is Used. Everything works and functions as intended. All the original presets are still present as well.”
“SEQUENTIAL CIRCUITS PROPHET 600 SYNTHESIZER.
“Selling my Sequential Circuits Six Trak synthesiser. Is a great sounding 6 voice poly synth. This item is a vintage synth – was the first synth to feature midi – and as such has some scuffs to the paint and a chip to the side panel as shown. As a vintage synth be aware the tuning can also drift slightly, however this can be calibrated. Overall the synth sounds great, selling due to underuse. ”
“This auction is for one used Sequential Circuits Pro One synthesizer. I have had it for 8 years and I have replaced all key bushings, had the power cable replaced, had the mod wheel replaced, and had the oscillators tuned and calibrated. It’s in amazing condition. I have seen several Pro Ones in person and this is the best condition one I have seen. You will not be disappointed. This is the J-Wire keyboard version, but the bus bar and J-wires have not been cleaned (by me) in some time and a lot of keys double-trigger at the moment. Just a warning so that you don’t think it’s defective. 😉 I typically controlled it via CV since that was easier than taking it apart and cleaning it. Plenty of tutorials online for that. It’s just time-consuming, but anyone can perform it. I am only selling this because I have had some recent financial trouble. I really don’t want to sell it. My loss is your gain. 🙁 ”
“Sequential Circuits Six-Trak. 240v VCO synth. Plays perfectly. No audio problems that I could find. On the left-side wooden panel, it has cracked where the screw is and has been re-glued back on. Barely noticeable, but could come off again during transport. Also, the transformer emits an audible hum from the transformer. Not a biggy, but FYI. Defintely sold as is with any and all issues.”
“Vintage Sequential Circuits SIX TRAK 6 , Analog Synthesizer 49 keys, Midi equipped. Condition is Used. Everything works great with one cosmetic issue: The Master Tune knob is broken but still functions as intended. All the original presets are still present as well.”
“SEQUENTIAL CIRCUITS PROPHET VS SYNTHESIZER :
” SEQUENTIAL CIRCUITS PROPHET 600 Analog VINTAGE SYNTHESIZER Midi Keyboard for sale. Fully working and excellent condition. Has been stored away in case for a long time now so condition is in tact and very good.
“Listed as fair condition for cosmetic flaws but fully functioning six trak and plays and functions as it was new. Huge analog sounds! Everything has been meticulously gone through. Here is a list of some of the things that are brand new or are identical to factory parts that have been replaced.
“For sale: Sequential Circuits Pro 1 Vintage Analogue Monophonic Synthesiser in excellent, working condition.
“Absolute classic, sounds amazing, newly serviced, pots & keys all glitch free, showing age appropriate signs of wear & tear but generally in good condition.”
“This is a Rev 3.3 with 120 programs and has factory midi. Cosmetically- Nothing is ever mint in my opinion and this one is no exception. It is in excellent cosmetic condition in my opinion so please check out the photos and judge for yourself. The original walnut cabinet looks pretty nice as you can see. ”
“A baby brother to the venerable Prophet 5, this Prophet 600 is packed with analog goodness! Unit is in overall very clean condition, recently tested and is 100% fully functional. All keys work and trigger reliably. All knobs function without crackles. Switches all work 95% reliably, but can benefit from an occasional shot of contact cleaner. MIDI in & out tested and functional. Original wood end caps are in very good condition. No obvious cosmetic flaws to mention considering the instrument’s age.”
“For sale: Sequential Circuits Pro 1 Vintage Analogue Monophonic Synthesiser in excellent, working condition.
“Sequential Circuits Pro-One 80’s Vintage Monophonic Synthesiser. Condition is Used.
“Rare Sequential Circuits Prophet-5 Keyboard Synth Ver 3.2 No MIDI with Hard Case. Very nice-sounding synth. No upgrade, all orig”
“Sequential Circuits Pro-One 80’s Vintage Classic Monophonic Synthesiser Synth. Condition is Used.
“Sequential Circuits Prophet 600.
“Sequential Circuits Pro-One 80’s Vintage Classic Monophonic Synthesiser Synth. Condition is Used.
“sequential circuits Model 64 Sequencer. For Commodore 64 and 128. My grandpa was a musician, I pulled it out of his old studio and I’m making him some extra money. As is, no returns. Vintage midi synth”
“Sequential Circuits Prophet 2002 Plus Digital Sampler Synthesizer Rackmount version of Prophet 2000. Has analog filters. 12 bit resolution in an age of 8 bit, this thing was Ace in it’s day and still a strong tool for sound design.
“Vintage Sequential max synthesizer in great conditions powers on all buttons and knobs functions when pressed all lights works and when i pressed the keys all track lights lights up depending on what keys i press all keys are straight and solid i no nothing of this vintage unit dont no how to test it selling as is no returns no further testing done on it”
“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used.
“Sequential Circuits Pro One Keyboard Synthesizer. Condition is Used.
“Sequential Circuits Prophet 600.
“Sequential Circuits Prophet 600 Keyboard Synthesizer. Condition is Used. I’ve owned this for about 5 years and generally used a separate MIDI controller as to not wear out the keys. The keys do work although I believe a few could use a pass with contact cleaner. Otherwise this is in amazing condition. Comes with a case. This synth is pure 80s magic, and I’ve used it for creating some of the most wonderful soundscapes.”
“Sequential Circuits Split Eight, (aka Split 8, Pro 8)
“Sequential Circuits MAX Analog Synthesizer. 6 voice synth with built-in sequencer that is up to 6 parts multitimbral. Everything is in good working order, but the case on this unit has a little light rust. This has the memory upgrade from Tauntek/Bob Grieb installed. This gives you more presets, more sequencer notes, the ability to save user presets in NVRAM, and better MIDI control. This is a big improvement over the original, and it’s worth noting that this mod is no longer available. The MAX is very similar in function and sound to the 6-Trak, but without the knobs.”
“Sequential Circuits Pro-One 80’s Vintage Monophonic Synthesiser.
“This thing is in GREAT condition. A few minor scratches here and there.
“I have fully tested this synth. all working well