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Sequential Circuits MAX

“Up for auction is this AS IS – NOT WORKING Sequential Circuits MAX MIDI Voice Expander

This unit is being sold in “AS IS” and “ALL SALES FINAL” condition.

The unit is in very good cosmetic condition. There are no internal sounds and the recorder does not work. May be used for MIDI use only. Power supply NOT included.

Please note: There may be additional items missing, broke, or that may need repair. ” Click here to visit listing on eBay

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Sequential Circuits TOM

“Up for sale is a great example of the Sequential Circuits TOM.

The unit has been recently serviced – this included installing a new set of front panel switches, cleaning the trigger buttons and also installing the Tauntek TOM16 sound bank upgrade.

The TOM16 upgrade gives you 16 sound banks to select from, adding hugely to the sonic potential of the unit. This is v1.2 of the upgrade and includes the option to allow external cartridges to be used at the same time.
Also included is the HKA Classics Cart with 8 banks of DX/DMX/LM1/Linndrum sounds.

Cosmetic condition is really tidy, with only minor marks and blemishes.

The unit is 100v, so a step down power transformer may be required depending on your location.”
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Sequential Circuits Poly Sequencer Model 1005

“Vintage Sequential Circuits Poly Sequencer Model 1005.

Clean and in working order, the data and power leads are in great condition.

The unit itself isn’t in top cosmetic condition yet it’s OK, internally it’s perfect. It powers on immediately and the record light starts blinking to indicate it is ready to receive the required data from the connected Prophet 5.

Mains voltage selector to the rear, UK plug fitted. No mini cassettes or other accessories are included.” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“My friend bought this new and I ended up with it some years ago not works great and has some honest wear but nothing bad. Still works and functions as should. Comes with and old photo copy of the manual.”
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Sequential Circuits Drumtraks

“1980”s Sequential Circuits Drumtracks Model 400
Unit has been stored in smoke free, music room , See pictures for its age , its in really good shape, very clean and
I tested prior to posting this and all instruments sounds work fine . I was able to record a new pattern ( a great one I might add)
and save it .

This is a great songwriter tool as it is very simple to operate and create new patterns on the fly. You also have the ability to
tweak the instrument settings and control their volume in patten. ”
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Sequential Circuits Prophet 600

“Super nice Sequential Prophet 600 for sale.

Comes with the gligli mod, a new overlay for the mod, and a calzone case. The synth has been recapped and serviced, and is clean and ready to go! ”
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Sequential Circuits Prophet 600 Project Machine

“Sequential Circuits Prophet 600. The unit looks to be in good physical condition but I have no way of testing it.
The keyboard is being sold as is for parts or repair.” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“Vintage 1980’s Sequential Circuits Drumtraks Model 400 Drum Sound Machine

The extent of my ability to test was to turn on and test the buttons. It powers up and the number buttons perform as intended. There are no signs that it has ever been “opened” / messed with. There is some scratching on the underside and along the wooden sides. Cord is in perfect condition. Item comes from a non-smoking home.” Click here to visit listing on eBay

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Sequential Circuits Pro-One

“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

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Sequential Circuits Prophet 600

“For Sale is an excellent condition Sequential Circuits Prophet 600. I am the original owner, and will ship the keyboard in its original box, with the original foam mold packaging.

I never used this keyboard much, as I am more of a pianist and bought it for a band that didn’t end up lasting. It was stored for most of its life in a temperature controlled storage unit. Several months ago I dug out many of my old synthesizers and organs (mostly for nostalgia’s sake) and decided I was going thin out the collection.

The keyboard was refurbished this past September by one of the premier Synthesizer repairmen in NYC. I put about 1100 into it, if you are interested in what he did, I can forward you the email he sent me itemizing the work done.

This is a great keyboard, and if I had more space I would keep it, but it’s down to this or my original arp odyssey, and that has always had a special place in my heart.” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“Classic sequential circuits drum machine , Dave Smith and sequential’s answer to the Linn Drum and for the price difference it delivers! In amazing condition any test welcome selling as not getting used.

This also runs on eproms so can have oberheim sounds in this as well as linn and roland tr909 if you look on ebay there are many sellers selling lots of classic sounds on eprom.

Get a classic 80’s drum machine for a fraction of the price of an Oberheim DMX / Linn Drum or Roland TR-808 or TR-909.” Click here to visit listing on eBay

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Sequential Circuits Six-Trak

“This Six-Trak is basically NOS. It sat in its original box with original molded foam packing for decades. I took it out of the box in 2021 and unfortunately some reaction took place with the packing foam and some paint on the front came off (see pics). It is strictly cosmetic, but a bummer because the synth is perfect mechanically. I upgraded the firmware,” to v. 14. The screen, buttons, wood ends and keys are like new.

The original operational manual is also included. If someone wants to have the paint touched up this would be a museum piece.” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Experience the unique sound of the Sequential Circuits Prophet 600 Synthesizer, a must-have for any music enthusiast. This vintage musical instrument is a true gem, featuring a wide range of sound options that will take your musical creations to the next level.” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Excellent condition 80’s era Prophet 600. GliGli 2.0 mod update installed as well as the GliGli info card as can be seen in the photos. This is an excellent example of the Prophet 600. A great Vintage Synth. Selling slightly below market value, only to make room, has been well cared for and works exactly as it should. Please take the time to view to photos. This is exactly what you will be receiving, plus the power cable.”
Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“Selling my Sequential Circuits Drumtrax, v good cosmetic condition and in excellent working order. services and new battery in 2022. 2x owners from new 1984.

The bundle includes loaded 808/909 samples and the original EPROMs (Linn samples) that can be swapped around-see internal pics.

Also includes a custom Drumtrax protective cover. This is an awesome sounding machine a very easy to program- all individual and main outs are all working perfectly no crackles etc.

Each sound can be tuned and volume adjusted.” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“WORKING CONDITION: Excellent – Works great. This Prophet 600 has the Teensy ++ Gligli mod which simply improves the MIDI features and overall sound of the Synth. All of the keys are responsive. Each control and parameter is working properly as well. In all, everything is fully functional and in excellent working condition.

PHYSICAL CONDITION: Very Good – There are some scuffs and abrasions mainly on the wooden side panels of the synth. Otherwise, everything is solidly built, intact, and in very good physical condition.

INVENTORY #50925

BRAND: Sequential Circuits

MODEL: Prophet 600

FUNCTION: Synthesizer

PRODUCT DESCRIPTION: This listing is for a Sequential Circuits Prophet 600 61-Key 6-Voice Polyphonic Synthesizer

SPECS:

Serial #1849
Mods: Teensy ++ Gligli

ACCESSORIES INCLUDED:

Prophet 600 Dust Cover
Prophet Rev 5 Control Cover
Mono Keyboard Case
Original Components”
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Sequential Circuits Prophet 600

“Up for sale is our classic Sequential Circuits Prophet 600 upgraded with the essential GliGli cpu.

The synth has been recently serviced and all is working as it should be. As part of the servicing work, a new membrane touch panel was installed.

Its in great cosmetic condition overall, with only minor blemishes.

Its a 100v model so a step down power transformer may be required depending on your location.

Included as part of the sale is a hardcase for the synth.” Click here to visit listing on eBay

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Sequential Circuits Multi Trak

“Recently serviced by pro Bay Area tech. Fully functional and sounds great! All new 33 push button tact switches, new battery, internal cleaned, loaded few factory sounds. Can’t find a wav file to do a sysex factory download. Did find a copy of the factory manual and manually loaded the sounds. Will email you the manual so you can save all the factory sounds in it. Minor marks & scratches but overall it is in excellent condition. Includes new replacement power supply from Syntaur, cost $82! ” Click here to visit listing on eBay

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Sequential Circuits Drumtraks with Mods

” This very, very special machine can be seen and heard in the 20 minute video “EPIC!!! ’80s Drums ‘n’ Echo: Roger Nichols WENDEL/WENDELjr Sequential Drumtraks Lexicon 224XL/LARC”, and the video shown in this listing “BEST IN THE WORLD!!! Sequential Circuits Drumtraks w/5 Tuners and 4 Individual Outputs Jamming In 4K” is an edited 7-minute excerpt from the full video that also shows other machines with examples of 1980s and 1990s music. Two of those WENDELjr drum machines with full drum kits of sounds are listed here in my other eBay listings.

This is the best Sequential Drumtraks available in the world. No one else has this.

This looks perfect and it works perfectly. The lithium backup battery is good with all patterns held by what I believe to be the original battery which presently reads 3.42v. Kids, in the 1980s we didn’t put these batteries in crappy tin-plated sockets so we could change the batteries ever 0.2 seconds because the batteries were good, they LASTED, usually decades. There are loads of 1995 Pentium PCs getting rained on in landfills that still have the original coin cells in them.

All controls work like brand new, and the sound is fantastic.

This is Drumtraks Model 400, serial number 400-2553. The Drumtraks was the world’s first MIDI drum machine released in 1983, the lookalike companion to the Prophet-5 analog synthesizer, the volume and tuning of each sound can be precisely programmed for each note.

This one has a rare modification which adds 5 analog drum tuning pots and four additional individual outputs.

The tuners and outputs are organized as 4 from the bottom up the same as the right four drum buttons right-left and the four rear outputs are the same right-left, and the top/5th pot is for the snare all the way over second from left which already had a factory output.

This machine has the factory Drumtraks crash cymbal and ride cymbal sounds which are absolutely excellent (hear sounds in the video above) and the factory MIDI upgrade software version 4 which has omni and poly modes over 16 MIDI channels, MIDI pads-out commands, velocity sensitivity via MIDI, the best version for using the Drumtraks as a sound module with a MIDI sequencer (but version 5 exists with improved MIDI sync), all in factory IC sockets.

All the other sounds have been replaced with six ZIF sockets with absolutely unbelievably killer sounds, just hear the snare in the video, it makes the whole machine huge. The custom sounds are the bass drum, snare drum, hi-hat (amazing), and two chips holding two custom percussion sounds each. The video lets you hear them all with the REAL 1980s reverb as they were used back in the 1980s.

This machine is in better than excellent condition (basically as right out of the box except for a rough area in the rear near the serial number tag where a producer’s label was removed) and everything works as new. I’ve had this machine here for 27 years, since 1996.

The circuitry that performs these modifications will not be photographed and the files of these sound chips will not be named, listed, or e-mailed out to people who always ask for them. This is a Synhouse exclusive. But isn’t it all?”
Click here to visit listing on eBay

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Sequential Circuits Prophet 2002

“Sequential Prophet 2002 Rack Mount Synth

Truthfully I tell you this unit worked fine the last time I tried it. But that was probably 15 years ago.

The unit is on the cusp of an age where it could probably do it good to be recapped, with what I’ve learned about aging capacitors.

So I figure if you are one of these recapping people, you’d probably rather the seller doesn’t plug it in, right?

That’s the thinking I’m going with, anyway, both on this and on the Ibanez MIDI controller I’m selling in another listing (along with the matching MIDI guitar).

Or, if you wanna just plug ‘er in, don’t let me stop you! It will probably work!

Let me know if I’m overthinking it!

You can see in the pic that the “2” button and LED are kludged, works fine though. If you have a parts unit, here you go!

Comes with the Prophet 2000 instruction book! (The 2000 is just the 2002 plus a keyboard and a couple wheels, they operate identically otherwise to the point that they use the same software ROM (V3 BTW), but you knew that!)” Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“This is part of the collection I’m selling; as with other things, this has been in storage for a long time. It therefore requires calibration, new battery, and inspection by tech. The good news is no one‘s used it for a long time, so you’re getting a very clean unit. As an owner of Prophet 5s, I can say this is quite comparable in many ways. In some other ways, they differ, both having pros and cons. Very nice piece comes with flight case.” Click here to visit listing on eBay

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Sequential Circuits Prophet 5

“PHYSICAL CONDITION: Excellent – A few barely visible abrasions can be found around the chassis of the synth, one of the back bottom corners is dinged. See pics. Otherwise, everything is solidly built with each key, knob, and button perfectly intact. Overall, the physical condition is excellent.

INVENTORY #50612

BRAND: Sequential Circuits

MODEL: Prophet-5

FUNCTION: Synthesizer

PRODUCT DESCRIPTION: This listing is for a Sequential Circuits Prophet-5 61-Key 5-Voice Polyphonic Synthesizer

SPECS:

Serial #1645

ACCESSORIES INCLUDED: This item includes a power cable. This item comes only as seen in photos and does not include any other accessories.”
Click here to visit listing on eBay

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Sequential Circuits Pro One

“Fully functional Pro One in original condition with J-Wire keyboard. The synthesizer is in very good condition both visually and technically. In addition, I am giving a new and not yet installed TM-2 replacement kit (semi-weighted Fatar keyboard with mounting accessories) as well as Potikappen in the Prophet-5 look from the company. Techmechs Vintage Synth.”
Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“This is part of the collection I’m selling; as with other things, this has been in storage for a long time. It therefore requires calibration, new battery, and inspection by tech. The good news is no one‘s used it so you’re getting a very clean unit. As an owner of Prophet 5s, I can say this is quite comparable in many ways. In some other ways, they differ, both having pros and cons. Very nice piece comes with flight case.”
Click here to visit listing on eBay

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Sequential Circuits Pro One

“WORKING CONDITION: Fair- Works about 90%. We cleaned the keyboard and exercised some knobs. Four of the keys are really sticky and tend to stay down when pressed, so they may need some mechanical adjustment. Seems like they’re all mostly engaging though. Some of the controls particularly the filter cutoff are a bit glitchy sounding. In all, this synth will need additional service besides cleaning and maintenance to get it to 100% Currently listed as in fair working condition.

PHYSICAL CONDITION: Very Good – There are some scuffs and dings around the synth. The keys are uneven and probably due for some new bushings, but otherwise, work and feel fine. All buttons, sliders, and knobs intact and ready for action. Overall, the physical condition is very good.

INVENTORY #49146

BRAND: Sequential Circuits

MODEL: Pro One

FUNCTION: Synthesizer

PRODUCT DESCRIPTION: This listing is for a Sequential Circuits Pro One 37-Key Mono Synthesizer

This item was part of Dennis Herrings’ studio production arsenal at his Sweet Tea and DTLA Recording studios.

SPECS:

Serial #9149” Click here to visit listing on eBay

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Sequential Circuits Drumtraks

“Today I’m listing a sequential circuits model 400 drumtraks drum machine from 1984.

I’m only selling it as I can’t really justify owning 2 of these just to save swapping EPROMs around!

It is In remarkably good condition for the age.

There are a few dings on the wood sides , not much mind and only minor marks and blemishes / corrosion marks here and there on the metalwork.

It is very clean throughout , no dust bunnies or spiders!

Iv tried to show the cosmetic condition in the pictures , do have a good look to make sure you’re happy.

More importantly it works flawlessly. ” Click here to visit listing on eBay

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Sequential Circuits Pro One

“This needs a lot of work. Some keys trigger while others dont or have some contact issues. A wheel has broken off but can be bought and/or printed. This sale is As-is so treat it like you are purchasing for parts and anything else is a bonus. Turns on without issue. Great project for anyone that wants to replace the bushings, do some key work (def needed) and anything else that comes up.” Click here to visit listing on eBay

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Sequential Circuits Pro One

“Sequential Circuits Pro One Synthesizer Model 100 Sold AS-IS for restoration. It powers up. I am not familiar with these. I do not know history. I think it is from 1979. I assume the power on/off switch went out so the previous owner hardwired it on. The only way to turn it off on is plug/unplug. One key is higher than others. I opened it up and saw one pin on connector the 16 pin connector was broken off. (see photo) I may have done it opening it up. Those are the only things I noticed. Sold as-is for repairs.” Click here to visit listing on eBay

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Sequential Circuits Pro One

“This is the J-wire version which Is supposed to be the better of the two. The keys like to double trigger anyways. It takes a bit of work to stay in tune, but hey it’s 40 years old. I made a whole album with this beast. If you wanna listen let me know. It sounds HUGE” Click here to visit listing on eBay