“Oberheim Matrix 6 midi synth keyboard with rare extras.
Superb condition for a 30+ year old analogue synth, one of the classic sounds from the 80s – all Oberheim synths sound HUGE! Awesome thick strings, cutting bass lines, anything the Matrix 6r or 1000 can do this does with a keyboard attached, and with 2 cool levers running both positive & negative. Assign these in the mod matrix.
I believe that last OS chip was retro fitted, and it has a 3 month old battery upgrade installed using the CR watch type batteries – easy for you to change next time! I loaded a sysex dump off of the web of nice sounds, plus this package includes the original manual, original brand foot pedal plus rare cassette tapes – Oberheim volume 4 150 basses, and the factory preset volume 1.
Oh, and a hybrid case too!” Click here to search for synths on eBay
“Oberheim Matrix 1000 analog synthesizer. 120V. Very good, clean condition. New 2032 battery installed with clip, so future battery replacement is simple. All six voices are now functioning properly. Two of the CEM 3396 voice chips were not functioning properly and have been replaced. Voices tuned and calibrated/see pics. All new stainless case screws. V1.13. 90-day warranty.”
“Oberheim Matrix 1000 analog synthesizer. Very good, clean condition. New 2032 battery installed with clip, so future battery replacement is simple. All six voices are now functioning properly. Two of the CEM 3396 voice chips were not functioning properly and have been replaced. Voices tuned and calibrated/see pics. 7 new stainless case screws and complete main board screws. V1.13.” 
“Recently serviced Oberheim Xpander by SD Machinesmodule in excellent technical condition with slight paint wear on the back. It comes with a Calzone case in very good condition also on the outside but the inside wore out. We have placed foam inside.” 
“Oberheim Matrix 1000 analog synthesizer. Very good, clean condition. New 2032 battery installed with clip, so future battery replacement is simple. All six voices are now functioning properly. Two of the CEM 3396 voice chips were not functioning properly and have been replaced.” 
“Bought long ago new with several others. Put in storage in plastic foam. Never used.
“This Matrix 1000 is in perfect working condition and in Very Good condition.
“Everything works great on this classic synth! One of the white keys broke and it was professionally repaired with plastic adhesive. I can hardly tell unless I look closely. Please see pictures. Fully operational. Classic Van Halen “Jump” setting sounds awesome! Has custom hardwood ends from Chile! I feel fortunate to have owned this incredible keyboard.” 
“Oberheim Matrix-1000 Synthesizer Module MIDI Vintage classic unit. Condition is Used. Rack ears slightly bent but unit functioning per perfectly when recently tested. Well loved unit, but I don’t need two of them anymore, so it should find a new home. As-is due to age.” 
“Oberheim MATRIX-6 Analog Synthesizer. Classic analog synth from the 1980s.
“Classic rack mount version of the Matrix 6 synth. 6 voices of Oberheim analogue 80’s goodness. There is one small segment of LED on the far right which does not light up, otherwise it’s working perfectly and sounds fantastic. It can run on either 120v or 240v by swapping a fuse (it is currently set to 240v).” 
” Oberheim Matrix 6 keyboard synthesizer (recently serviced by Borish Electronics). Condition is Used. Local pickup only.” 
” Oberheim Matrix 6 keyboard synthesizer, good condition, had to replace one broken G key with a D key because of lack of parts, but it is barely noticeable. Works great, all the presets are there. Condition is Used.” 
“The OBX was produced from 1979 to 1982 or thereabouts. I bought this one second hand in 1984. It does not work in its current condition. All knobs are missing. Power switch works and lights on panel flash on and off kind of randomly and it makes random pitches. Keyboard has no effect but pitch bend wheel does.
“Oberheim 6r Rack Synthesizer Analog Filters Vintage Synth. Condition is Used. Shipped with UPS Ground.Good condition, display is bright and sounds very nice…a lot of great vintage sounds Oberheim is famous for” 
“Oberheim OB-8. Condition is Used. Well maintained, in very good condition, and recently serviced. Works great! If you are a true keyboardist, then you already know the history of this vintage keyboard and what it can do!
“Up for grabs is a very good condition Oberheim OB-8. If you are in the market for one of these beasts, you know exactly what it does. This example includes the original manual and the software update manual that was included when updated in 1984. Besides the update, this synth is 100% original and works perfectly. In tune, all sounds and functions work properly, and has very awesome MIDI capabilities…a real piece of magic. Besides a scuff on the face, this unit is excellent and if not for the few scuffs it has this example would be nearly mint. “
” Vintage Analog Goodness.. Oberheim Matrix 1000 with Stereoping Matrix Controller. ALL in FULL working condition, no operational issues. Both look good, Matrix has some rack rash on rack ears, but works perfectly. this is just by far the best oberheim for the money. Classic rich pads, strings, brass, basses, leads all for a low price considering how much OB8, OBXA, Xpanders are selling for nowadays. ” 
“Overall this Xpander is in excellent condition with a few minor cosmetic blemishes to it. It has ben tested and works as intended. There is a tiny scratch on one of the screens but it is strictly cosmetic and doesn’t effect the performance any. See photos for actual unit. It comes with the power cord.” 
” I’m selling on of my Oberheim OB-MX 2 voice rack synthesisers. It’s got version 2.0 operating system. ” 
“PHYSICAL CONDITION: Excellent – All keys and all controls are fully intact and in fantastic shape. Overall it’s condition is excellent. WORKING CONDITION: Excellent – All keys and controls are in perfect working order. All around this unit is in incredible condition and works perfectly throughout. Overall working condition is excellent. Please click on “Item Description” for more details and photos” 
“Oberheim Matrix 6 keyboard synthesizer. Condition is For parts or not working.
“Oberheim Matrix-6 Synthesizer
“Oberheim Matrix-1000 Analog Sound Module. Condition is Used. Shipped with USPS Parcel Select Ground.This is in good shape. It just stayed in my studio.I’m going to retire soon so I’m letting things go.” 
“Vintage Oberheim Xpander XP-1 Perfect Working FREE SHIPPING.
“Overall this Xpander is in excellent condition with a few minor cosmetic blemishes to it. It has ben tested and works as intended. There is a tiny scratch on one of the screens but it is strictly cosmetic and doesn’t effect the performance any. See photos for actual unit. It comes with the power cord.”
“IN EXCELLENT CONDITION
“2 years ago when I plugged in the keyboard it made one sound that was constant and unalterable. Today there was no sound. The keyboard was unattached to the base but it only needs two screws. The keyboard was also unattached from the rest of the circuitry. I reattached it with no discernible results. The glass over the led light on the left upper corner of the keyboard is broken but the light works. There is no power cord for this keyboard but it is the same type of cord that’s used for a computer monitor which is easy and cheap to obtain. ” 
“This Oberheim Matrix 6r is in great condition cosmetically, functions perfectly and sounds awesome! The 3v internal battery has been replaced with a fresh battery and is slotted as well for easy access and replacement (which won’t need to happen anytime soon). Current patches loaded are the String patches. Operating system on this unit is 2.13.”
“OBERHEIM OB-MX Analog Polyphonic Synthesizer – Rare Vintage. This Unit is in Excellent Used Condition. The unit is factory it has 1 card giving 2-note polyphony. Very clean unit. Comes with original manual. ”
“Oberheim OB-8 Keyboard Synthesizer. Condition is For parts or not working.This was a storage unit find I do not know if it works or not it may or may not work I am not a professional and not sure how to test it local pick up only”
“In very Good condition – sounds great! Provides the warmth lacking with most modern synths. Includes custom fitted case.All new CEM3396IC’s, updated with latest EP-ROM version 2.13.” 
“Oberhiem classic Matrix-1000 Analog synth module. Condition is Used. ”
“Tom Oberheim TVS 2 Voice Pro Analog Synth Mint Condition. Very light studio use only.”
“Used(very good) perfect working condition