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Sequential Circuits Pro One

“Sequential Circuits Pro-One 80’s Vintage Monophonic Synthesiser.

Please read carefully ;

I bought this synth completely refurbed it is very tidy however a few of the keys are now not triggering and will need to be serviced.

Any buyer is welcome to try the synth but it will be sold as seen I have tested it out and to my knowledge there are no other faults at all. I intended to get a service and keep it but now I’m needing funds to refurb my house so I decided to sell it as is.”
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Sequential Circuits Prophet 600

“This thing is in GREAT condition. A few minor scratches here and there.

Not only does it sound and operate perfect. The sounds are so stylized and phat. Truly like nothing I ever heard. Love this thing and its gonna be sad to let go.”
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Sequential Circuits Drumtraks

“Sequential Circuits Inc. Drumtraks Drum Machine Vintage 1984. Good Condition. Condition is Used. Collection in person preferred. Courier delivery can be arranged but i would prefer to wait till the auction has ended until deciding on a price, once i know the destination.

The machine has recently been serviced fixing a few small quirks, however there still remains an issue or two the rim button does not work. and one of the buttons (to lower the tempo) is missing, however the tempo can still be lowered it is just not as aesthetically complete.

all of the pattern and song functions are working and the tempo/volume shift although quite slippery are in order and you can easily select every parameter available once you have the knack for it. ”
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Sequential Circuits Prophet 5

“Sequential Circuits Prophet 5 with MIDI – the ’80’s analog classic. Condition is Used. Collection in person only.

This comes with the instruction manual and a cassette recovery tape with the original patches – should you have a cassette player, if you don’t, it’s a neat bit of retro art, if you like.

IMPORTANT; This synth is COLLECTION ONLY. I’ve had a few bad experiences where vintage gear has been posted and then not worked as advertised, then I’ve been told, “it was fine when I posted it.”

Now, that may have been the case, but I want to save myself and the winning bidder any trouble by making this collection only.
That way, you can see the machine, check it and everyone is happy. You can take a look at the attached video description too, for peace of mind.

OK, you’re here, so you already know this is one of the Big Three analog polys of the early-to-mid ’80’s, so, although DSI have new versions of this out, they’re not time machines. This is your one chance to feel and experience the genuine analog sounds of that golden era. And yes, it was a golden era, let’s admit it.
For me, this has more warmth than the other Big Two, the J8 and OBX/a, but once in unison it can kick your speakers and churn out some high weirdness – famously, Japan used the Pro’s modulation craziness on “Ghosts” to memorable effect.
If you watch the vid, don’t expect a display of virtuoso musicianship or a knob-by-knob breakdown of the P5 – you can get that with loads of vids on YouTube. It is simply a demonstration of functionality, so please don’t leave cutting reviews. I don’t plan on releasing the demo as an album. Or do I?
As you can see from the pics, there is some cosmetic hoo-hah, a few scratches here and there, but not bad for a machine that gigged throughout the ’80’s. Also, the bottom B key is a bit sticky (again, this is highlighted in the video) so will need a clean.
I’m selling because, quite simply, I need the space and the Pro 5 has done its time in my arsenal, so it can now move on with honours to be enjoyed by someone else who’ll appreciate it. ”
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Sequential Circuits Pro One

“Sequential Circuits Pro-One Vintage Analog Mono Synth Excellent condition. Everything works well. Has j-wire keyboard with replaced bushings. Sounds wonderful. Clean. Has minimal cosmetic wear. Selling as-is due to age. Manual and power cord included.”
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Sequential Circuits Prophet 2000

“SEQUENTIAL PROPHET 2000

auftrag von kunde mit widerrufsrecht
stammt aus wohnungsauflösung

zustand : wie auf den fotos zu sehen , sieht original und ohne modifizierung aus

mit strom kabel geliefert

test : das gerät schaltet ein, display und tasten , alles reagiert einwandfrei, ich habe nicht weiter getestet

verpackung : mit luftfolie und viel styropor
daher die versandkosten ( als kompensation : verkaufpreis ist niedrig )”
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Sequential Circuits Prophet 2000

“Vintage Sequential Circuits Prophet 2000 Sampler / Synthesizer – Arpeggiator Keyboard.

Condition is Used.

This item was tested at the time of posting with no dead keys and everything seems to be in working order (volume knob & post are missing but volume is operational) but this is a vintage piece of hardware being SOLD AS-IS. ”
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Sequential Circuits Multi-Trak

“Sequential Synthiser number 00377

Model & serial number 615

I can see no reason why this will no longer work however unable to check as do not have power cable. ”
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Sequential Circuits Prophet VS

“Prophet VS fully serviced from Switched On Austin, about a year ago. Key action works great, with aftertouch fully functional, chorus intact, etc..

There are surface scratches that can be seen in the images, but nothing that effects the actual instrument. Still looks quite stunning and suitably cold in any studio setting.”
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Sequential Circuits Prophet VS

“Extremely rare, works and sounds great!

Some notes: Slider is missing original cap, but the slider is 100% functional. Caps show up frequently and cheaply — check around!

Display is readable but still dim at maximum contrast, this is an issue with all VS’s actually, keyboard or rack. Just wanted to mention to avoid surprises. A new OLED display upgrade is also widely available and easy to install.”
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Sequential Circuits Pro 8

“Sequential Circuits Pro 8, Analog Vintage, 1985, UK 240V (Juno 60, 106) . Recently serviced and converted to 240V .Collection in person only.”
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Sequential Circuits Pro One

” Sequential Circuits Pro One w/MIDI Vintage Analog Mono Synth. Excellent condition EXCEPT noise generator doesn’t work. Everything else works great. Has MIDI. Has j-wire keyboard with replaced bushings. Plays great. Sounds really great. Clean. Has a faint scratch on back and corner wear on one side. Otherwise, looks excellent. Selling as-is though. Manual and power cord included.”
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Sequential Circuits Prelude

“Rare Vintage Sequential Circuits Prelude Analog Synthesizer. Works as it should and sounds great. All keys and functions work. Last high C key has been replaced and is whiter than the rest as can be seen in pics. These were made by Siel in Italy for Sequential Circuits.”
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Sequential Circuits Prophet 2000

“Sequential Circuits Prophet 2000 Sampler, analog Filter Near Mint Condition!. All Items I am listing were tested and photographed in 2012. They were then wrapped in plastic and stored. I will test EVERY unit before shipping and will reach out to buyers if there are any issues.This is my personal museum collection, which I have been building for 30 years, and it is painful to sell but we need money.Most items have manuals and I will be digging for those as well…I would never intentionally deceive anyone and will endeavor to make sure ALL buyers are happy”
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Sequential Circuits Prophet 600

“The Prophet 600 was the first commercially available MIDI equipped synth (1981).

I recently took out the key contacts and cleaned them (this is a commonly needed procedure for these). The keys are perfectly straight and the action is nice and even from key to key.

The memory works perfectly.

This unit has not been modified in any way.

These sound amazing. They can be extremely aggressive and biting. The cross mod capabilities are very nice.

I wish I didn’t have to sell it.”
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Sequential Circuits Prophet 600

“SCi Prophet-600 programmable polyphonic synthesizer

Looks 9.25 of 10
In very 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.
Change all electrolytic capacitors and short life transistors, opamps and logis ICs with new ones,
and keys knobs, sliders, switches and jacks cleaning before shipping.

Brand new switch panel installed.
gligli firmware installed (on buyer’s request).”
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Sequential Circuits Prophet 2000

“Hello and thanks for reading this listing for my truly beautiful 1985 Sequential Circuits Prophet 2000 sampler. I really do think this one of the best 12-bit samplers of the era due to the flexible multi-timbrality, build quality and that fantastic rich Curtis resonant filter (as used in many a classic analogue synthesizer, as I am sure you know).

This Prophet is near as damn it in PERFECT condition. Barely a mark on it. I have recently serviced it, and cleaned every key contact ensuring every velocity-sensitive key works and also does so over midi, controlling other modules as required.

The fantastic futurist membrane-buttoned panel works perfectly with every button and LED working as it should. What a great design it is. No crackles from the balance or volume potentiometers. When cleaning the unit I did take note of how easy it is to gain access – 6 screws and the lid flips up, and another 2 release the whole keyboard bed for straightforward cleaning. It’s even signed by a Sequential Circuits engineer inside the case.

Not only is it in amazing condition but this particular 2000 has a library of about 40 disks loaded onto SD Drive which is fitted into the drive bay. This frankly makes the unit far more usable and you can add more to your hearts content. Oberheims, DX7 presets, Hammond samples, Emu library sounds, Synclavier and Fairlight library sounds, even complete EMU SP12 and TR808 kits spread across multi-samples….they are all on here at your fingertips in their 12-bit glory. Truly amazing what you can do with only 256kb of RAM. You can still buy a 512kb upgrade online, but this one is as it came out of the factory and this is just how I like it. If you want to start using the sampler to double up each sample and work in stereo I would suggest investigating that upgrade – Personally I have always used it in mono mode which to my mind gives it the true sound for which it is famous. In either case you have options to expand should you wish.

Did I mention the fantastic sound of this sampler enough already? Pop it through a reverb and away you go…instant Faltermeyer, Jan Hammer, Art of Noise etc. It’s a really, really rich and evocative sound. With a half-decent sequencer and a little planning you could produce a whole track with this item.” Click here to search for synths on eBay 

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Sequential Circuits Drumtraks

“1984 Sequential Circuits DrumTraks Drum Machine in Working Order, with some quirks…

*Quirks….the potentiometers on individual sound/drum and Tuning are finicky…usable but finicky
meaning they will hit their stepped settings (maybe mark with a pencil) but you need to spin slowly

volume is a little crispy

Being sold as-is

A Decent Usable Example”
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Sequential Circuits Pro One

“you are bidding on the synth pictured
from a private collection. has been sitting a long time
but in Great physical shape. all keys and functions are working well
some of the pots and switches and key contacts will need cleaning and normal service
I have not had this unit serviced, but will guarantee it to work as it should
faces up Very nicely as seen. wood sides are in very good shape.
dates to 1983. the keys are a bit clanky when triggered – I think they need a new felt strip inside
no major issues or problems”
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Sequential Circuits MAX Project Machine

“Up for grabs is a Sequential Circuits MAX 100% warm and fuzzy analog synthesizer.

Note: The unit turns on but does not complete the boot process and thus will need servicing. Though: It is in good/great “physical” condition for its age.

There are a few scratches on it.

It is similar to the Sequential Six-Track and Multitrack. The sounds are pretty big and amazing. Think prophet.

The MAX was designed as an alternative to more expensive Sequential models. The sound quality wasn’t sacrificed but they cut out some of the controls to save on construction costs. It only has a few onboard controls for modifying sounds. It does have 80 stock presets (most of them are great as-is) and there are 20 user patches.

If you want to dive in and modify the sounds it’s really not that difficult. All of the sounds can easily be controlled by an external MIDI CC controller. I use the Arturia Beat Step Pro (not included). It allows me to control the sounds quickly. I will include a printed copy of the manual and MIDI instructions.” Click here to search for synths on eBay 

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Sequential Circuits Pro One

“you are bidding on the synth pictured
from a private collection. has been sitting a long time
but in Great physical shape. all keys and functions are working well
some of the pots and switches and key contacts will need cleaning and normal service
I have not had this unit serviced, but will guarantee it to work as it should
faces up Very nicely as seen. wood sides are in very good shape.
dates to 1983. the keys are a bit clanky when triggered – I think they need a new felt strip inside
no major issues or problems” Click here to search for synths on eBay

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Sequential Circuits Prophet 2002

“This unit was originally owned by composer Jim Johnson of the WWE. This sampler was used in Jim’s studio for years making it onto many of his recordings. The Sequential Circuits Prophet 2002 is fully functional and in very good condition overall.” Click here to search for synths on eBay

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Sequential Circuits Pro One

“1x Sequential Circuits Pro One Vintage Synthesiser

In good working order, just had a service

Rebushed j-wire keyboard, plays nice and keys are level

Couple small chips on the front panel which are purely cosmetic

Missing both name badges, which it has been since I got it.

All time classic mono synth from sequential circuits. essentially a single voice prophet – and too wonderful for any words to do it justice! It also is the model with a Tibetan Buddha and chant* stencilled on the circuit board, for extra good vibrations!”
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Sequential Circuits Pro One

“Up for auction is my Sequential Pro One vintage analog synth w/MIDI in near mint condition. It has the more desirable j-wire keybed which has been painstakingly refurbished.

What has been done:

MIDI kit installed. Simply connect a MIDI cable from your controller or sequencer to the MIDI IN jack. Hold the red button down to enter MIDI mode. Send the kit a MIDI note and it will respond on that channel from that point forward. A red LED above the pitch/mod wheels indicates whether or not it is receiving MIDI. CV/GATE can also be used.
Keyboard bushings replaced, bushings greased, j-wires polished, every key removed/cleaned/polished, and keybed painstakingly adjusted to perfection (both height and width). Each j-wire adjusted so that they hit the buss wire at the same time for more accurate keyboard response. Keyboard now plays like butter. I have extensive experience refurbishing pratt-reed keybeds and took extra care to make this synth play like a dream. This easily took 4-5 hours of painstaking work to complete.
Prophet-5 knobs with metal caps installed. Paint on caps is absolutely perfect, with no scratches.
Every knob removed and cleaned with a toothbrush to get all the dirt out of the cracks.
Wood panels removed, sanded, waxed, and hand-rubbed to bring out the grain.
Pitch/Mod wheel plastic replaced with NOS wheels from Wine Country. The old ones crack over time and can slip on the pots.
All pots and switches cleaned.
Power cord replaced with a much nicer panel mounted 3 prong IEC power receptacle. Makes it much easier to remove from a stand (power cable included).
Inside and outside of synth completely cleaned.
Synth voices calibrated and checked over for tuning stability up and down the keyboard.

I own two Pro-One’s, and this one sounds the best of the two. It stays in tune up and down the keyboard. Pots have been cleaned but a few might be scratchy. I will retest before shipping. Not sure why this one has such a nice rounded, thick character to it but I prefer the sound over my other Pro One. Physical condition is very clean, near mint. The wood panels have some nicks and dents here and there, and small holes where knots are in the wood. Every knob cap is pristine. Every knob has been cleaned. A few scratches on the front panel. See photos for details. Only selling to fund another purchase. I am very picky about my gear, and have refurbished this to as close to perfect condition as possible.”
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Sequential Circuits Prophet 600

“These units are in excellent condition with minor scratches and general wear as pictured.

Tested and working perfectly and having had a thorough test prior to listing.

* If you need to use this item in a 220-240v environment we sell high quality Nissyo branded made in Japan compact transformers which will allow you to use this item correctly in your country.” Click here to search for synths on eBay

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Sequential Circuits Six-Trak

“Amazing multi-timbal polyphonic analogue synth built in 1984 by Sequential Circuits, with MIDI, on board sequencer, arpeggiator and monophonic unison mode for nice thick sounds. If you’re looking at this listing you probably already know what it can do, but check out this post http://www.vintagesynth.com/sci/stk.php or have a look on YouTube for videos of it in action.

Bought it from my friend a few years back as it needed some TLC and he wasn’t using it, so took it to Synth Prof (synthprof.com) for a full MOT and UK mains conversion, which cost £225 around 2 years ago (if you need specific details of the work that was done I can email Andrew at Synth Prof for more info).

Some minor marks on the wooden end panels but nothing more than you would expect from a machine of this age. Otherwise has been looked after well and not used very often in a smoke free studio.” Click here to search for synths on eBay