“Oberheim OB-Xa in great condition. Everything is working. I was privileged to play this beautiful synthesizer for many years on countless recordings. It was always kept in my dust and smoke free recording studio. It has the fat Oberheim sound that you know from the records. You won’t be disappointed.” Link
“Rather let’s get to the specifics of this particular item. It’s in great shape! I just completed a major overhaul of the keyboard in which all the contacts were cleaned and bushings replaced. No sticky notes. The previous (original owner) had an aftermarket midi kit installed that has basic in/out/thru functionality and is solid. I’ve had zero problems with this throughout the years it’s been in my possession and has had regular maintenance service.” Link
OB-Xa (8 Voice / 120 Programs) – Professionally serviced and overhauled (for well over $1000). Including all new J wires, bushings, NOS curtis chips, caps, gating chips, opamps, battery, pots cleaned, contacts cleaned and fully calibrated (including mod / bend section). Keybed is great and plays like new. Some scratches on top. Please see pics. All knobs and buttons are there. Sounds totally amazing! I programmed in all the factory patches.
Oberheim DX Stretch (MIDI) – Professionally serviced. Including new battery, all sliders and contacts cleaned. This is a later model with MIDI out (key to connecting this Oberheim system out to other MIDI drum machines, synths and sequencers). Excellent condition. Missing one slider top. Please see pics.
Oberheim DSX (OS 3.04) – Contacts cleaned. No further service needed. Excellent condition. Comes with original Oberheim Computer Interface cable. This sequencer is amazing! Super flexible. Compatible with numerous vintage synth / sequencer voltages via internal switches that can independently change 8 total cv / gate channels to different voltages. With this Oberheim system combination you can do cv / gate, trig, clock or w/ the DX midi out to control and incorporate basically anything. This is the only sequencer I have found that will sequence my vintage Minimoog Model D.” Link
Original Factory Programs have been reinstalled,
so you are getting the original Oberheim patches that came with the instrument
Copy of original owners manual provided” Link
” This analog beauty was in housed in an Anvil case in climate controlled storage for some time
I used a Variac to slowly recharge the filter capacitors for a few days for safety
It fired right up and the oscillators tuned perfectly after a few minutes so had a tech go through it for piece of mind
He sprayed out all the pots, jacks and switches with DeOxit and compressed air and it sounds great
I have no way to test out the Cassette Tape memory so I can’t vouch for that but I’m certain that’s not too much of a problem in 2016
I have more photos than ebay would allow me to post but feel free to message me and I’ll be glad to email them to you
All 12 or 24db/oct Curtis Filter Chips are intact as as best I and the tech can tell, this has never been modified
Original Sprague Orange Drops are plentiful for that vintage punch – this thing’s low end is devastating
The Ob-Xa weighs easily 45lbs so shipping will be a flat $200 unless you want to pick it up in Los Angeles” Link
“This in an original OBXa 8 voice, 120 program in fully functional condition. The synth is clean, fully intact, all 8 voices work and all knobs controls and jacks are working great. It’s had a rebuilt power supply (more robust than stock) new key bushings for a beautiful key action, a new battery and the factory patches were loaded. It’s in tune and ready to play and auto tune passes all voices. This is a vintage synthesizer and is being sold as is however a video demo of this synth working properly at the time prior to listing will be provided. You may need to perform calibrations at some point if the synth gets move around a lot or goes through different climate changes therefore an owner should be a little familiar with these things or have a tech on hand if you wish to own an XA. I’m including a power cable and will pack it very safely, double boxed with plenty of packing.” Link
“Up for sale is a great condition OB-XA that’s fully functional and sounds amazing. It has 120 programs, a fresh backup battery and factory patches are installed. This synth has been serviced and is very reliable. The synth has a rebuilt power supply, fresh key bushings, polished key contacts, and the voice cards have had the capacitors and tuning trim pots replaced. Auto tune passes all voices and all controls work as they should, see the video below of this synth. It’s voices are panned so that the odd voices are opposite channels of the even voices for a stereo panning effect which can be changed via trim pots inside or you can use the mono output when you don’t desire the stereo effect. I’ll pack it very safely double boxed and will ship promptly after payment is received.” Link
“Up for sale is a great condition OB-XA that is fully functional and sounds amazing. It has 120 programs, a fresh backup battery and factory patches are installed. This synth has been serviced and is very reliable.
The Oberheim has had a rebuilt power supply, new key bushings, polished key contacts, and the voice cards had fresh capacitors and tuning trim pots installed. Auto tune passes all voices and all controls work as they should. The power supply is rebuild more robust than stock so you can operate the synth confidently for long sessions. I recommend the use of a power conditioner to be sure you’re delivering clean power to the vintage instrument. It’s voices are panned so that the odd and even voices are opposite channels for a stereo panning effect which can be changed via trim pots inside. You can use the mono output when you don’t desire the stereo effect. I’ll pack the Oberheim very safely double boxed and will ship promptly after payment is received. The items is listed for sale elsewhere therefore this listing can end at any moment.” Link
“This is the one you want. The top model. Full 8 voice 120 program’s and JL Cooper midi. Very nice condition and very reliable. Sounds incredible and huge. Has the odd mark here an there with age. But a fine example. Sold as seen. Collection only on this ” Link
“Vintage Oberheim OB-Xa 8 voice programmable polyphonic analog synthesizer in excellent condition. This is the 120 program model. The OB-Xa was just professionally cleaned and serviced and has had the power supply recapped, all voices tuned and calibrated, and battery replaced. Incredible sounding analog synthesizer for pads, bass, and leads. Nothing else sounds like the vintage Oberheim OB-Xa. Includes the power cord. No other accessories or manuals are included.” Link
“Nice used Oberheim OBX-a synthesizer. It is from the estate of a local musician. It works but I lack the skills to test every function. It is in good cosmetic condition but the back and top edge of the synth has some foam residue from its flight case – I will let the new owner clean that off as you may have your own preference for cleaning.” Link
“Nice used Oberheim OBX-a synthesizer. It is from the estate of a local musician. It works but I lack the skills to test every function. It is in good cosmetic condition but the back and top edge of the synth has some foam residue from its flight case.” Link
“Vintage Oberheim OB-Xa 8 voice programmable polyphonic analog synthesizer in excellent condition. This is the 120 program model. The OB-Xa was just professionally serviced and has had the power supply recapped, all voices tuned and calibrated, and battery replaced. Incredible sounding analog synthesizer for pads, bass, and leads. Nothing else sounds like the vintage Oberheim OB-Xa. Includes the power cord. No other accessories or manuals are included. Shipping, insurance, and packaging anywhere in the USA via ground service will be $150.00. The cost includes custom packing so the OB-Xa arrives to you safely.” Link
“The unit powers up and make faint amount of sound. All buttons and switches are working. The unit was in a high humidity environment and has rust on the outside and some rust on the inside metal.” Link
For sale is a nice condition Oberheim OB-Xa 8-voice synthesizer.
See the 12 photos included in the auction for the exact item being sold.
- It powers up and LEDs lights, but it is being offered as NON-WORKING and in AS-IS condition.
- We’ve done only some limited testing – it does not produce sound.
- There are some missing knobs and toggle buttons – see the photos for details.
- The back and top edge of the synth has foam residue from its flight case. See the photos for details.
- Nearly all of the LED buttons toggle on/off – but we can’t tell if they are functional beyond that:
Again, this is being sold non-working, as-is. That said, if you have the skills to restore this widely featured beauty from the ’80′s (see references below), it would make for a beautiful addition to your collection!” Link
“My father bought this Oberheim OB-Xa 8 voice synthesizer around 1982. Most of my childhood I would see my father composing behind this synthesizer in our home studio. When my sister and I had the opportunity to play with the Oberheim, I remember us being obsessed with bending those unique sounds.
Around 1990, the top of the board shut down, and my father boxed the synthesizer back into its original box where it set moving from different storage places to another. Recently, going through his old things, I pulled the Oberheim out of its box to check its condition. My father was meticulous about keeping his instruments clean and retaining most of their documentation. It was no surprise the Oberheim was still in great condition. I have included a photo of some slight scratches on the upper right side. Also, I have tossed out the original plain brown box, which had begun to disintegrate over the years and did find the original service manual and settings booklet.
I did power the Oberheim to check its function and the synthesizer does come on although I couldn’t get it to output any sound. The power supply seems to work, the power light comes on along with the internal board lights, and the red lights for 7 of the voice cards. The voice card #7 red light flashes and then turns off.
The button lights on the lower section of the board work as normal, but none of the switch lights on top of the board light up.” Link
Classic analogue 8-voice synthesizer, one of about 400 manufactured during the early 1980’s. This particular specimen has been thru extensive repairs and is offered in full working order. The Kenton MIDI kit is installed offering both MIDI IN and OUT (key information only). The J.L.Cooper Poly MOD has also been installed providing similar sound creation functionality to Sequential’s Prophet synths of the same era. Also included is the 3 * patch memory option giving 96 locations to store user programs. Bank A has been programmed with a good selection of factory sounds with the remaining banks B & C free. This old girl is offered in great condition, plays great and most importantly sounds incredible.
Original robust and durable flight case included.” Link
“Up for sale is my Oberheim OB-Xa. Keyboard is fully functional, all keys and all 8 voices work. The only down fall with this unit are the contact points on the keys have worn away, causing a “clacking” sound while played. This unit does not have midi.” Link
- Powers on and fully functional with the only known issue being that under the Filter for OSC 2, the HALF button is not fully functional. No response from the button when depressed. The LED above the button will no illuminate. The HALF function does operate correctly when a factory patch setting is selected which in turn illuminates the LED and depressing the HALF button will turn off the HALF selection and extinguish the LED. However again pressing the HALF button will not allow re-selection of the setting nor again illuminate the LED above the button.
– All 8 voice boards were recapped with new electrolytics a few years ago. Instrument powers on and autotune functions properly to tune voice boards.
- New key bushings were also installed a few years ago. Keys are nice and soft when depressed, not clunky.
- No MIDI installed. Encore Electronics has a MIDI kit available for $299 (http://www.encoreelectronics.com/cont_obxamk.html)
- Instrument has always been stored in a climate controlled (air-conditioned) environment.
- Will ship in hard case shown in photos.
- Sold as is.” Link
Powers up with no output. Full functioning instrument until recently. Not sure exactly what going on with the instrument however neither have the time, patience nor interest to look further into the issue. Sold as is. Always stored in a climate controlled (air-conditioned) environment. Will ship at quoted rate within the continental US only. No reserve auction.” Link
“Great working and looking OB-Xa with 120 programs. Recently fully serviced at Cae Sound in California. Keyboard powers on and auto tune functions properly, all programs work, and keys work properly. Includes manual and flight case. Sold as is.” Link
- Powers on with output and the classic “Oberheim” sound.
- Later model OB-Xa with storage for 120 programs.
– All 8 voice boards were recapped with new electrolytics a couple years ago. Instrument powers on and autotune functions properly to tune voice boards.
- New key bushings were also installed a couple years ago. Keys are nice and soft when depressed, not clunky.
- No MIDI installed. Encore Electronics has a MIDI kit available for $299 (http://www.encoreelectronics.com/cont_obxamk.html)
- Instrument has always been stored in a climate controlled (air-conditioned) environment.
- An E and F key second from the right didn’t sound when depressed though a quick inspection revealed the J-wire for both keys is in good condition and may just need some cleaning as well as the contact bar.
- Keyboard only. No case.
- Instrument sold as is. May need some other minor servicing.” Link
(1) Oberheim OB-XA Analog Synthesizer
About this OB-XA -
This OB-XA works perfectly!!! — (details below)—
This OBXA comes from a smoke free studio environment.
The OB-XA synth is in great condition and has an upgraded keyboard. The original J-Wire keyboard has been replaced with a rubber contact keyboard like the same as the ones in such synths as the Korg PolySix/MonoPoly, Roland Juno-106, SCI Prophet 600, etc. All rubber contacts have been recoated to ensure like-new response.
This OBXA does have the expanded memory card installed.
All knobs are present.
There are no scratchy or noisy pots!
There are some surface marks/scuffs, but this is expected for a synth of this age.
I am selling this synthesizer for a customer of mine and I have gone through it to be sure all is well taken care of. I believe he is the original owner.
This also comes with the original factory patch cassette and the original user manual.
A hard shell case is also included which at the moment is in need of new foam. The case itself has seen better days, but it does still serve the purpose of keeping the synth protected.
There is some history behind the owner, it is Tom Neme who was part of the Bob Seger System back in the 60′s (if searched online, you will find his name on the Noah album). I know that this might not be a significance to everyone, but it’s worth mentioning as part of the synth’s history. ” Link
“Oberheim OBXa in excellent physical condition with great cosmetics. This unit is the 8 voice version and has the 120 program mod Vs the original 32 program set .For those not familiar with the OBXa, you can read up about the synth on Vintage Synth Explorer, Sound on Sound and other sources. The OBXa has a grittier sound , better low end, and slightly quicker envelopes compared to the OB8. The sound is somewhere between the OBX and the OB8.Although both units use the same CEM chips for the VCO/VCF, there are circuitry differences that allow changes in gain stage, resonance , and tuning precision that probably contribute to the sound differences. It is especially noticable when using the 2 pole 12db filter.
This particular unit was in great functional shape when purchased and I invested another $2K with New England Analog in Dec 2013 and $1K with Retrolinear in April 2015 to bring it up to modern standards. The amount spent on this OBXa was clearly overkill and preventive maintenance. I know I won’t be able to recoup the majority of $$ invested but the PM work should ensure decades of problem free performance for the new owner. Every capacitor, logic chip, and opamp that could be problematic in the future was replaced.The significant rebuild work done includes:
replacing all power transistors, linear 7085 can regulators, and capacitors in PSU
upgraded all bridge rectifiers to 3A rectifiers
replacing every 4000 series logic chip with modern chips and replacing all polarized caps in unit.Original 4000 series chips have a checkered history in synths.
all voice trays removed , recapped and re-chipped
all audio signal path chips upgraded to high audio quality opamps
all output opamps on each voice card upgraded to high audio quality opamps
non polarized caps replaced on oscillator CV lines which improved autotune capability.
all 16 oscillators tuned and 2P and 4P filters tuned/calibrated
Pitch bend mechanism rebuilt with new pot to guarantee zero return on pitch and mod levers
New power switch and battery
Installed upper voice board supports and replaced pivot hinges
Replaced T1(v/o trimmer)on voice #8
Pratt Read keyboard re-bushed and bus wires polished.The key action is excellent! Much better than the crappy Panasonic keys of the OB8 design. Night and day!” Link
” This is an Oberheim OBX-a as the ad clearly states. If you’re here browsing chances are you already know the specifics of this beauty so, no need to list all the stats. Needless to say, it’s big, it’s heavy and it’s lovely!! The story on this gem is, I was gigging with some cats who wanted to do a tribute to the 80′s and me being the obsessive freak that I am, I had to have this board. Besides that, I’ve always loved Van Halen and Rush so, it was a no brainer. I bought this one on EBay from John Leimseider (look him up) who is the curator at the National Music Centre (look it up) in Calgary, Alberta. As fate would have it the tribute to the 80′s never did happen for us and so, the board has been in my studio for the last number of years. Up until a short time ago when I decided to prepare it to be sold. I shipped it back to John who has gone over it thoroughly and has assured me it’s ready to rock. When it’s time to ship it will be well packaged and protected. Obviously, this item has been used. Consequently, there are signs of wear. However, the wooden sides are in perfect shape as are the keys. Everything works and it is completely functional. However, I would be remiss if I didn’t mention that cosmetically it does have blemishes. There are a number of visible scratches on the top and what appears to be scrapes. I would say for it’s age it’s a 7/10 cosmetically speaking. Thankfully, this does not affect playability. This board is all original but John is able to install midi for a fee of course. Cheers!” Link
I then had it serviced and cleaned up at EPR Electronics. I can provide the invoice for what this machine needed then. The tech told me this has been professionally maintained and cared for. It works flawlessly and will be missed. It does have a few nicks and blemish scrapes. I left Chick’s taped notes on the machine, but they can easily be removed. I will provide more images this evening.” Link
“I am selling my Oberheim OBXa. It’s in fantastic working and cosmetic shape. All 8 voices are working great and were professionally tuned to factory specs by Five Star Engineering. The power board was rebuilt with higher spec capacitors and the rectifiers were upgraded to 3amp. All connections throughout this synth have been cleaned and lubricated. The dried up old keyboard bushings were also recently replaced with fresh new Pratt Reed rubber bushings for every key. During this process the keys were bathed and individually cleaned before being reinstalled. An Encore MIDI board has been installed which, in addition to adding MIDI, also eliminates the need for the memory battery, so it was removed. All settings are now stored in flash on the Encore. All of the factory presets are loaded on this memory and there’s plenty of room for your own custom patches as well. In some ways this is like new and others, better than new. The pots all turn freely and the jacks on the back are all rust free and clean. The side bells are in great shape, have all the original screws and plastic gaskets, and they look great. The mono output is usually how I play this but months ago on a whim I started using Stereo for the first time and I was blown away. Sounds sweep between channels or alternate depending on the patch. It’s a very fun feature often not mentioned when people talk about the OBXa.
I think this is a great example of an OBXa but there are some minor issues I should point out. The frequency Pulse LED has burned out, however all the other LEDs work. There are 6 dense rubber feet on the bottom of an OBXa, this one is missing one of it’s feet. The black paint has been touched up in some areas at the bottom of the control panel. At an angle in the light this is apparent but less apparent when you are playing it straight on. These are very superficial issues to me but might be a deal breaker for others. ” Link
” Very little used, all original, perfect working condition. This is the synth Van Halen used on “jump”. Improved version of original OB-X, it has more preset memory and more stable tuning. Purchased new in 1981 and has been stored lovingly for 20 years. A collector’s item if there ever was one. Includes case. Oberheim is one of the most revered analog synthesizer makers. This synth has a lot of miles left and classic sound. ” Link
This synth was totally overhauled keybed rebuilt, new bushings, serviced and calibrated (approx. 12 months ago). The unit works without any problems. Also, The computer interface input works as it should. ” Link
Ein Klassiker in der Synthesizer Welt. Ein Gerät das Geschichte geschrieben hat, z.B. Jump von Van Halen ein legendäres Intro. Einmaliger Zustand. Kaum Gebrauchsspuren, keine Dellen. Backup Batterie ersetzt. 120 Prgramm Speicher. ” Link
“The synth is in very good used condition. Some scuffs here and there, but the wood endbells are in great condition, too. Note four early factory/retrofit screws in the mod box on the lower left of the OBXa. The MIDI install took up a little real estate on the back panel.” Link
“This Oberheim OB-Xa no longer powers up (turns on). The on/off switch lights up and some led light up on the printed circuit board. A week ago it was making some sounds, now it is not. It belonged to my brother, who had a professional recording studio. I expect that some of the electrical components will need to be replaced in order to get it working 100%. None of the keys stick. The name plate on the back reads 6 voices. If you want to know more about this keyboard, go on line and you can learn all about it. There are fewer and fewer of these available for sale. If you are looking for unique sounds, this is your baby. Operator’s manual included.” Link
“This Oberheim OB-Xa powers up (turns on). I was able to get some sounds out of it, but I really don’t know how to operate it. It belonged to my brother, who had a professional recording studio. I expect that some of the electrical components will need to be replaced in order to get it working 100%. None of the keys stick. If you want to know more about this keyboard, go on line and you can learn all about it. There are fewer and fewer of these available for sale. If you are looking for unique sounds, this is your baby.” Link
Reluctantly selling an Oberheim OB-Xa with MIDI modification in great condition.
Just serviced. Very clean. Everything works as it should.
OBX-a is considered the meanest synth ever made.
Unique and brilliant.
It has seen very little action. These are incredibly musical and powerful synths.
The only things I know to be of note are:-One key has a hairline crack (pic included)-
One of the rubber bushings under one of the keys (which makes the keys a bit more silent) is missing. These bushings deteriorate over time and need replacing.. not a biggie.-
There’s some very minor scratches (really minor for a synth of this era- just thought I should mention)
Other than that, to my this thing is ready to rock.
Check out YouTube for more encouragement.
These boards don’t pop up for auctions too often for the reason and even if
…not in such a great condition.
Power cord and printed manual included.” Link
” Up for sale is an Oberheim OBXA analog synth. This is a high end, powerhouse polysynth, the same one used on Van Halen “Jump”, also used by Prince and many others. This is the 8 voice model. It powers on and does work but needs some tuning/calibration, maybe replacement of capacitors, and reloading of presets. I tried cleaning the key contacts with Caig Progold and I do believe the contacts are clean but the some keys dont make sound every time you press them. Most of the functioning of the knobs worked, such as the filter, modulation, oscillators, envelopes, master tune/detune, portamento, and all the buttons worked, except one button is missing from the side panel near the pitch bend that selects the lower octave. the pitch bend should be okay once this button is fixed. The right pitch bend wheel did work. Every other knob/button is there and the output works. It makes a sound and you can hear some of the presets as is.” Link