Oberheim OB-Mx

“Oberheim OB-MX Synth AS-IS! PLEASE READ!
This is a unit I’m not terribly familiar with, I received it with some other musical equipment. Unit powers on and buttons and knobs all seem responsive. I hooked up a MIDI keyboard to the unit but was unable to produce sound through speakers, possibly an error in the way I have it connected. – see below -” Click here to visit listing on eBay

Oberheim OB-8

“I bought this synth to use in my band and studio in 1983. I haven’t played it in about 20 years but the repair shop (Spectrum Sound – Indpls) inspected everything this year. I’ve included a receipt showing the condition. “Voice 3 fails autotune (bad CEM3340), voice 4 sounds bad filter circuit issue. Many keys don’t play (bad rubber key contact strips).” The outside appearance is nearly perfect except for a single scratch visible in one of the pictures which was actually caused by the leather case with zipper I had custom made for the synth. With a little TLC and a few minor parts, it should be fully functional.” Click here to visit listing on eBay

Oberheim Matrix 1000

“Oberheim Matrix 1000 Vintage Analog Synthesizer Rack Synth. Condition is “Used”. This unit is a great way to get that classic Oberheim sound in a 1U rack module. Additional photos available upon request. Includes power cord. Manual not included but can be easily downloaded and printed. Item will be shipped in an oversized box with a plethora of bubble wrap.” Click here to visit listing on eBay

Oberheim Xpander

“Oberheim Xpander XP-1 6 voice desktop version of the Matrix 12 US version. Condition is “Used”.

Studio use only, non-smoking. Always covered. All functions work, programs easily. Every button functions normally, yet occasionally may require pressing again. This is rare however, the more I program with it the less it occurs. The tune function passes all modules normally. Was inspected last year by a pro and passed with flying colors. Does not have any outstanding physical flaws all leds perfect.” Click here to visit listing on eBay

Oberheim Matrix 1000

“Awesome synth, updated to the latest Eprom which allows visual readouts of adjustments abd parameter changed on the LED screen during programming. Works great. Has the classic Matrix 100” transformer poser hum, but they all do that. Good shape, minimal rack rash. Classic ballsy 80s synth with tons of possibility! Oberheim Matrix 1000. Condition is “Used”.” Click here to visit listing on eBay

Oberheim Matrix 1000

“Oberheim Matrix 1000 6 voice polyphonic analog synthesiser.

Visually a bit tatty, the faceplate is slightly misshapen and has some rack rash and a few other small marks. The volume pot is also a little bit loose but functional.

1 of the voice chips has failed and needs replacing. I have been using the synthesiser without much problems without it as not many of the 800 presets use all the voices, but you do notice it occasionally. I purchased a new CEM 3396 narrowbody to do this but never got around to it, same story with the firmware update. Both of these are very easy pull out/push in jobs, but while it’s opened up probably worth switching out the battery for a battery holder/button battery (requires some basic soldering), although seems to be fine.

Once you get the new firmware in you have a couple of options for ‘real-time’ control. One of them is an £800-ish controller from Steroping, Another is patchbase which is around 30 quid and works on your computer or iPad.

Comes with the original instruction manual which I have forgotten to photograph but will add tomorrow.”

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Oberheim Xpander

“You know what this is… This is the most advanced, most elegant sounding Oberheim of them all.. besides the Matrix 12. She purrs… she growls and so much more. Once you play it, you’ll instantly recognize all those instant classic 80s sounds. Not many synth freaks have one.. most have never played one. This synth is not for the faint of heart. It delivers in every way.” Click here to visit listing on eBay

Oberheim Matrix 6

“Oberheim Matrix 6 MIDI analog synthesizer, VG condition, been gone through and kept clean inside and out. Condition is “Used” very good nothing to report. This matrix 6 I really just use this for soundscapes and sounds. Incredible sounding synth. I’m going to miss it’s quality sounds. Can’t be beat.” Click here to visit listing on eBay

Oberheim OB-1

“Here is a vintage Oberheim OB-1 synthesizer, this synth was just serviced which included replacing all the old key bushings, all functions check ok, see repair bill for more details, this synth is in fairly nice shape for it’s age, end caps show wear, back edge on top has some scrapes, the synth shows average wear in general, it is not mint, not much more I can say, please look at the pix and the repair bill” Click here to visit listing on eBay

Oberheim Matrix 6

“OBERHEIM MATRIX 6 Keyboard Synthesizer. Good Condition. Works well! Signs of wear from old age, please see detailed pictures. This synth has been in my smoke free studio since the early nineties. I’m not a keyboardist but I ran a good check-up everything seem to be working fine. The volume knob makes a bit of noise only when adjusting (probably needs cleaning).” Click here to visit listing on eBay

Oberheim DMX with MIDI

“Vintage 80s Oberheim DMX Drum Machine – DX With MIDI

Awesome drum machine, classic 80s sound, great for Nu Disco, boogie, Indie dance etc

Used on countless early rap records, Rick Rubin, Run DMC etc

Classic 80s grooves, on many early Madonna records, this one has MIDI which makes it easy to connect with modern gear. Drums are tunable by turning the jog wheel on the boards inside, each sound has its own board(a few are combined)!!! Talk about hands on!” Click here to visit listing on eBay

Oberheim Matrix 6

“Oberheim matrix 6. Condition is “For parts or not working”.

Good project for someone who is good with repairing old synthesizers.

I have owned the keyboard for over 30 years.

The keyboard turns on but not displaying patches.
See output in the display in picture.

This was in good playing condition when last played about 10 years ago.

Has always been in a smoke free environment. ” Click here to visit listing on eBay

Oberheim DMX

“Oberheim DMX W/MIDI /external Custom TUNING BOX/ Free EPROMS INCLUDED!!. Condition is “Used”.

Ok ..here we go…Here’s our Ob DMX that’s been in our studio “forever” lol!. Recently inspected…battery has been swapped. Led’s work perfectly. Has the midi kit where the I/O was put into the side panel. The fun thing was I had a box made in which the tunings were able to be changed via using the CV port in the back. You just need a 9 volt power supply. There’s roughly 90 or so eproms that im including. You only see 53 on one side…but if you flip that foam over there’s more! SURPRISE!! lol….that’s around $800 usd in chips alone…so go ahead…” Click here to search for synths on eBay

Oberheim Matrix 1000

“Oberheim Matrix 1000 Sound Module / Analog Synth Works Great

Comes out of a batch of studio gear that was well maintained, mostly racked, non smoking etc.

This one works well and comes as you see in the photos. It is in nice condition with a small amount of wear.

Wear may contain scratches, rack rash or other minor marks. ” Click here to search for synths on eBay

Oberheim OB-Sx

“🔥Oberheim OB-SX Vintage Analog Synthesizer w/ MIDI😎👍. Condition is “Used”. Closest you’ll get to an OB-X without breaking the bank. Tunes right up and sounds absolutely amazing. It’ll make you famous.

6 Voice. Huge paint peeling bass.
MIDISoft MIDI module attached. Internally powered. Allows full control over all functions like an OB-X.
Power supply recapped and all key bushings replaced.” Click here to search for synths on eBay

Oberheim Matrix 6R

“This is a 120v unit which has been professionally converted to 240v, but can easily be converted to suit most regions. Will not be supplied with a power lead as it is just a standard kettle cord readily available in every country. Will require a step transformer if using outside a 220-240v region.” Click here to search for synths on eBay

Oberheim Matrix 6

” Classic Oberheim Matrix 6 in full working condition. New battery installed last month as well!

This synth has that unmistakable OB sound at a price that is way more affordable than an OB8, OBXA!

Although you can fully edit any sound and create some wicked lush sounds.. I used a software editor to speed up that process. There are many great editors for Mac, PC and IOS.

This Matrix is in great condition in and out. No issues.”
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Oberheim Xpander

” You know what this is… This is the most advanced, most elegant sounding Oberheim of them all.. besides the Matrix 12. She purrs… she growls and so much more. Once you play it, you’ll instantly recognize all those instant classic 80s sounds. Not many synth freaks have one.. most have never played one. This synth is not for the faint of heart. It delivers in every way.

This is the Made in USA version not the inferior made overseas version. It was fully overhauled by a veteran analog synth tech. The main encoders were replaced with new stock certified pots purchased by Syntaur Synth Parts. It was also calibrated and tested over and over again to ensure years of usage to come. It sounds amazing, and it works as it should.. NO operational errors here. Plus as you can see from the pics.. it looks fantastic as well.” Click here to search for synths on eBay

Oberheim OB-Xa

” Sadly, the time has come where I need to sell my beautiful Oberheim OB-Xa synthesizer. This is an early 8-voice 32-program version of the instrument (serial number 813313) with the wonderful Pratt-Read J-wire keyboard, but two of the voice cards were removed before I bought it so it’s currently a 6-voice.

The synth is in very good condition on the outside and exceptionally clean on the inside. See the pictures taken in broad daylight.

I began the process of repairing the instrument, but further work is needed. The unit powers up fine, all buttons light up as normal, and the autotune runs to success. But for some reason all 6 voices are making a warbled, static-y type of sound. I don’t know why.

When I bought the instrument, the voices tuned and played perfectly, so I think the voice cards are fine. The left hand controller is need of repair. The levers are not functioning correctly and the plastic rate and depth knobs are missing.

This is what’s been done:

Replaced most of the 4000-series logic chips on the upper and lower control boards
Replaced all keyboard bushings, fixed any broken J-wires, cleaned the bus bar and all and leveled the keys
Replaced the battery
Cleaned all pots

I am not a certified technician and it became clear to me the extent of the repairs are beyond my capabilities. This is a great synth with the rare P&R keyboard. Sadly, the time has come for me to pass the baton to someone who can complete the work.” Click here to search for synths on eBay

Oberheim Matrix 1000

“Oberheim Matrix 1000 Vintage Analog Synthesizer. Condition is in Excellent “Used” Condition.
This thing sounds Awesome-nothing better than REAL Analog synths! You cant get this sound from a plug-in.
From Fat basses to searing leads and don’t forget that SEM OB Brass(Prince to the Human League).
Perfect working condition.
Built like a tank-Made in Japan

Hate to see this stuff go-but I have to move.” Click here to search for synths on eBay

Oberheim OB-XA and Oberheim DSX

“OBERHEIM OB-XA SYNTHESIZER KEYBOARD – 8 VOICES 120 PROGRAMS + Oberheim DSX WORKS. Condition is “Used”. Very rare piece of history. These were hooked up to an amp and do work. Not sure if they need tuning or something like that. This was used on tour of some sort. . Only one button has plastic covering missing which u can buy a cover to replace it. It comes with both power cords as well. ” Click here to search for synths on eBay

Oberheim Matrix 6R

“Oberheim Matrix 6R Analog Poly Synth Rack-mount, Vintage. Excellent Condition.. Condition is “Used”. Original Print Manual.

When Yamaha stayed determined to ride the FM PolySynth wave through the late 80’s, the Matrix 6 and 6R were introduced.
This is the rack-mounted version of the Oberheim Matrix 6.” Click here to search for synths on eBay

Oberheim Matrix 6R

“I’m the original owner of this Oberheim Matrix 6R analog synthesizer module. Originally released and built in 1986, these rack mounted synths were emblematic of that Oberheim sound – thick, synthesized waveforms. I’ve had this rack mounted in my personal smoke free studio since I purchased it in the late 80s. It’s in excellent condition, with only a few rack rash marks. I recently tested it out, all seems to work well. Software version 2.13.

Although it doesn’t currently need one, I recently bought a back up battery, which I’ll send along for those who know how to change it. I also have the original manual and a cassette that came with it, containing 1000 sounds. There are many other ways to upload sounds via MIDI which can be found online.” Click here to search for synths on eBay