Sequential Circuits Pro One

“Legendary analogue synthesizer from 1981. Without a shadow of doubt the most powerful mono synth ever produced. This thing is completely devastating for basslines, but also excels at leads, drones, percussive sounds and all kinds of other complete madness. A truly wild and amazing instrument. The real deal – none of this modern clone/reproduction business. The synth was serviced a couple pf years ago and is working spot on. There is one control knob (Osc A volume) missing as can be seen in the photos, but the actual potentiometer still functions perfectly and can be used like normal. There were none available at the time the unit was serviced, but they are readily available from a few sources at the moment and cost just under £10. The unit is in really nice overall condition cosmetically. There’s a hairline mark on the casing just to the left of the pitch/mod wheel as can be seen in the photos but this is superficial and has no affect on functionality. Wooden end cheeks in really nice condition. All in all for a 40 year old unit this is a really fine example.”
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Sequential Circuits Six-Trak

“Sequential Circuits Six-Track Classic Vintage Analog Synth built in 1985.

Six classic oscillators which can run in polyphonic mode or unison for amazing thick layered sound.

Recently serviced and fully tested. Works beautifully and looks good cosmetically too. No rust. A few slight marks and dings in the wood and some very minor marks on a few keys.” Click here to visit listing on eBay

Sequential Circuits Pro One

“Legendary analogue synthesizer from 1981. Without a shadow of doubt the most powerful mono synth ever produced. This thing is completely devastating for basslines, but also excels at leads, drones, percussive sounds and all kinds of other complete madness. A truly wild and amazing instrument. The real deal – none of this modern clone/reproduction business. The synth was serviced a couple pf years ago and is working spot on. There is one control knob (Osc A volume) missing as can be seen in the photos, but the actual potentiometer still functions perfectly and can be used like normal. ” Click here to visit listing on eBay

Sequential Circuits Six-Trak

“Sequential Circuits Six Trak Vintage Retro Electronic 80s Synth Synthesizer.

IMPORTANT PLEASE READ CAREFULLY

This synth is in good cosmetic condition apart from a small rust patch at the back.
On the front the sequential circuits sticker, the last few letters of ‘circuit’ has peeled off.
NO ACCESSORIES OR ORIGINAL BOX.

2 of the knob covers are missing, the unit can still be operated without them. I imagine replacements are easily obtained on ebay.

I am not experienced in programming this synth but I have tested as much as I can.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Sequential Circuits Prophet 600 – with Gligli Mod, and original CPU. Condition is “Used”. Shipped with UPS Ground.
This synth sounds great, exactly like the 80s!
There is some wear on the keyboard, to be expected from an instrument from 1982, but ive had no issues with its reliability.
I had this keyboard serviced in late 2018, and recently had the keybed re-painted with magnetic contact paint, making sure that all keys consistently fire, making this guy a fantastic performer!” Click here to visit listing on eBay

Sequential Circuits Prophet 600

” Sequential Circuits Prophet 600 – with Gligli Mod, and original CPU. Condition is “Used”. Shipped with UPS Ground.
This synth sounds great, exactly like the 80s!
There is some wear on the keyboard, to be expected from an instrument from 1982, but ive had no issues with its reliability.
I had this keyboard serviced in late 2018, and recently had the keybed re-painted with magnetic contact paint, making sure that all keys consistently fire, making this guy a fantastic performer!” Click here to visit listing on eBay

Sequential Circuits TOM

“Sequential Circuits TOM Drum Machine. Near mint condition and perfect working order in original box with original power supply, manuals, plus 1 original sound cartridge (Latin Percussion) and 2 reissue cartridges (Contemporary & 808). This is an awesome 80s drum machine, very ‘Prince’, sounds massive and is definitely a sleeper to my mind – I’ve owned plenty of classic drum machines and this has been one of my favourites. Super advanced for its time, it can be used to great effect triggering other devices, has midi, etc. and 99 pattern patches. ” Click here to visit listing on eBay

Sequential Circuits Pro One

“This one is in excellent cosmetic condition and working 100%. It has just been serviced and with a lot of restoration. It is ready to be played and needs nothing! I doubt there is another here on Ebay that is as nice cosmetically and that has had the same amount of restoration. Please mail with any questions. Not sold as-is! California residents to pay state tax. Shipping to most countries!” Click here to visit listing on eBay

Sequential Circuits Drumtraks

Comes with a Digital Deck Cover to keep the dust off.

Sequential Circuits Drumtraks Model 400. Condition is “Used”.

Great sounding vintage drum machine. Prince used this exclusively.

This machine plays well and all sounds work.

***please read**

Although this machine works it’s not in perfect working order.

The volume and tuning section acts erratically while trying to dial in each sound.

This does not change during play once pattern is set, only while turning the knobs.” Click here to visit listing on eBay

Sequential Circuits Pro One

“The Sequential Pro One is a wicked little monosynth! It comes from the same period and genre as the Roland SH-101 and Moog Prodigy. The Pro One was basically Sequential’s attempt at taking their legendary Prophet 5 poly-synth and packing it into a compact, inexpensive, monophonic analog synth! It has two VCOs, a great 4-pole lowpass filter, two ADSR envelopes (one for filter), and a compact three-octave keyboard. With a Pro-One, you can easily create punchy analog bass-lines and leads or quirky analog synth effects.

The Pro One is an extremely flexible synth with lots of modulation possibilities (ie: the filter, VCO B and LFO can modulate VCO A or B frequencies or pulse widths, or the VCF). There’s also an onboard sequencer, something common on many Sequential synths but not often found on other monosynths of the time. It is very basic, however, storing only two patterns and up to 40 notes max. Also, only pitch info is recorded (and in step time only); you can not assign a note duration to any notes. So it’s basically a short melodic sketch-pad…but useful. Also onboard is an arpeggiator which has UP and UP/DOWN patterns.

Unit has been pro repaired with a replaced key grommets & AC power cord. In perfect working condition with minor cosmetic issues due to age & handling.” Click here to visit listing on eBay

Sequential Circuits Prophet 5 Rev 3.3

“Prophet 5 V 3.3 synthesizer with original midi, original flight case, original bound manual, original bound service manual, in exceptionally good condition as per photos. The keyboard has been completely rebushed and all relevant capacitors replaced by Ben at Cyberwave EMS who is an expert in Prophets (he owns a Rev 2). Have you ever seen a P5 keyboard as even as that?! 🙂 It plays perfectly and as new. As you can see the condition is superb – the wood is beautiful and has one mark on the left hand edge as pointed out in the photos, which goes completely unnoticed in my studio. I’m a bit of a perfectionist with classic analogues (you can see a few, but the others, including my Jupiter 8 are also in top notch fettle) and I absolutely don’t notice the chip, which I considered having looked at by a French polisher, but haven’t as it just isn’t obvious in the studio. Ben knows this synth well as he has brought it up to top condition and serviced it for many more years of good service. I have had it dump its memory, but Ben has gone through it thoroughly and found nothing to be an issue and I had tape back ups. Speaking of the latter, I have all the original banks, but one of my own also in there at the moment which I can remove if you wish (but they’re good sounds!). Ben informs me that the Sequential factory midi can sometimes cause this if the buffer gets overloaded and his suggestion was that you could avoid using it, but I have anyway and it’s fine. Even better with CV. :). If you’re wondering why its so well priced for such a collector package, it’s because it’s priced to sell. I buy a lot of synths and know that the prices some people are waiting for is unrealistic . However, I’m not open to stupid offers and I’m not even convinced that I really want to let this one go, but I have the Pro One and my poly duties are waaaay covered by my other synths. Can you have too much Sequential? Probably not, but I’m not a collector and I use the Pro One more right now.” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Sequential Circuits Prophet-600 polyphonic synthesizer

Looks 8.75 of 10
Some scratches discovered but in clean condition. please see pictures.

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

Work list:
Change all elec. caps, tant caps and poly caps with new ones.
Change all power regulators and rectifier diodes with new ones
DAC adjustment
Change all buffer Opamps and multiplexors with new ones
Keys, knobs, switches and jacks cleaning.

gligli firmware 2.00 installed
factory 100 sound data installed

Voltage changed to 120 or 220-240V for free on buyer’s request.” Click here to visit listing on eBay

Sequential Circuits Multi-Trak

“Function: 10/10, Cosmetic: 9/10

All functions work and the synth sounds fantastic! Has been serviced and had its internal battery replaced with a new battery holder that takes two AA batteries. As well, the factory presets have been restored, and the battery drain mod has been performed (allows the internal batteries to last for years instead of months). As shown in the pictures, will come with a carrying case (modified guitar case), power supply, as well as an Operations Manual and Midiguide. ” Click here to visit listing on eBay

Sequential Circuits Six-Trak

“For sale is a vintage Sequential Circuits Six-Trak. The Sequential Circuits Six-Trak Polyphonic Synthesizer may be labelled as a “beginner model” by the company, but the features and functionality make it a prime choice for any synth enthusiast. Built with 48 velocity-sensitive keys and the same Curtis circuitry found in the company’s more expensive models. This Six-Trak exhibits some heavy cosmetic wear like rusting on the chassis and scratches on the side wooden panels. It’s not in the prettiest cosmetic shape, but it is completely functional and works perfectly.” Click here to visit listing on eBay

Sequential Circuits Prophet 5

“PHYSICAL CONDITION: Excellent – Some light wear from normal use, some near the edges of the knobs, and a few small dings just above the filter section. Otherwise this P5 is in remarkable shape. Keys and controls are all fully intact and in excellent shape. Both wheels and all I/O are also in fantastic condition. Overall condition is excellent. WORKING CONDITION: Excellent – Fresh from servicing, with a new key bed and thoroughly cleaned pots, this beauty is in perfect working order from top to bottom and sounds truly amazing! Also has a rebuilt power supply! All control knobs, all keys, all buttons, and all LEDs are working perfectly. Overall working condition is excellent. Please click on “Item Description” for more details and photos.” Click here to visit listing on eBay

Sequential Circuits Tom

” you are bidding on a used and serviced Sequential Circuits Tom Drum machine Model 420

This is an 8 bit machine produced in 1985

Comes supplied with 3 X HKA Design mini ROM cartridges with the classic Linn LM-1, LinnDrum and DMX samples, each mini cartridge contains 7 sounds

(Please note, the Tom should be powered down before the cartridges are inserted)

This machine has been stripped down and all buttons and drum pads cleaned

The main PCB is one of the later Rev C units and it also has the official ‘reset circuit’ modification

software OS is latest 1.5

overall condition is very good aside from some minor paint chips and a chip in the lower rear left end cheek” Click here to visit listing on eBay

Sequential Circuits Prophet 600

“Sequential Circuits Prophet 600 GliGli modded Keyboard Synthesizer. Condition is Used.
Includes power cable and original OS chip

professionally gligli modded
All switches, knob, keys work, and were recelty cleaned and properly lubricated and feel great.
Audio out is clean and strong. Has lower noisefloor than a bunch of modern gear.
Small ding in one wooden ear but othwrwise in great cosmetic condition.
All 6 voices work and keep tune. All membrane buttons are responsive. And the LED js bright and clear for its age.
Everything appears to work as it should and patches sound great.
Overall great condition. ” Click here to visit listing on eBay