OB-Xa, Oberheim @ 12 May 2020, Comments Off on Oberheim OB-Xa

“The flagship of the OB series, this is a 8 voice, 120 Program vintage Oberheim OB-Xa. One of the most awesome, fattest sounding analog synthesizers of all time! The synth has just been extensively serviced in May 2020 by Synthchaser with:

Rebuilt power supply, including new capacitors, multi-turn trimmers, and beefed up bridge rectifiers
Rebuilt voice cards, including new capacitors and multi-turn initial frequency and pulse width trimmers
Synthchaser battery eliminator module installed – saves the presets without the need for a backup battery! Factory patches have been loaded.
Full calibration – power supply, DAC, and voice cards – in tune and sounds awesome!
New key bushings, keys and key contacts cleaned
New side panel screws, new nuts for rear panel jacks

Overall reasonable condition, with a fair amount of scratches on the case. Some extra holes that were drilled in the back panel have been plugged, and there is a tiny hole on the front panel. Wood side panels are in excellent condition. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 26 November 2019, Comments Off on Oberheim OB-Xa Project Machine

“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. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 24 September 2019, Comments Off on Oberheim OB-Xa

“Restored and improved with the best MIDI retrofit, Encore Electronics OBXa-MK, all the factory patches, 120 Programs, 8 voices, no battery needed, new springs and bushings for the keyboard, rebuilt power board and rear power rails / voltage regulators, new voice dip switch, repaired internal wiring, cleaned and repaired inside and out. There are some scratches on the case and the wood side panels, please see all the pictures for detail of the condition. So much work has been put into this awesome vintage poly synth.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 10 September 2019, Comments Off on Oberheim OB-Xa

“Getting rid of almost all my gear.

Quite possibly the most fat analog synth ever made

Only known issue is one of the 8 voices is out of tune.

Physical condition is great for a synth this age. A couple of scratches. Nothing major. If you want more detailed pics just let me know. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 18 June 2019, Comments Off on Oberheim OB-Xa

“Oberheim OBXA, the Van Halen “Jump” Synthesizer, and king of 80’s brass strings and pads.

This fine vintage instrument was recently professionally serviced (March ’19) by world-class synth technician Greg Montalbano of Analog Synth Service (Oakland, CA). This service included keybed maintenance, and voice tuning/calibration (records available).

Cosmetically, an OBXA in Excellent near-collector grade condition, with the 120 patches, and the more desirable Pratt & Reed keybed, is pretty rare! It’s mostly clean, with a couple slight scuffs/scratches, and small chip to left wood side. See pictures for details.

Synth will be well-packed and shipped. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 19 March 2019, Comments Off on Oberheim OB-Xa

“Oberheim OB-XA vintage analog synthesizer. This is an original factory 6 voice model. The synthesizer is not working properly. There is a tone or noise, depending on which knobs you turn but no patches. All voice cards are working and light up one at a time when you trigger a note but they are out of tune. When I purchased the synth, all 6 voice cards already had new capacitors and all multi trimmers replaced. The power supply had also been recapped along with all new key bushings installed. The previous owner could not find anyone to do a calibration so decided to sell it. I also cannot find anyone to do a calibration within 7 hours of my home. It may need more than a calibration or it may not. It has scratches on the panel of synth and wear to the side panels. I am selling it AS IS or for PARTS only. Each voice board alone can sell for over 900.00 each. I am tempted to part it out because I can probably get a lot more money for it, however I really do not want to part it out over a one or two year period but stay tuned if I do not sell it. It is super clean inside as seen by the photos. I pack well and ship quickly. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 10 April 2018, Comments Off on Oberheim OB-Xa

“Sale is for a Oberheim OB-Xa Keyboard Synthesizer. Comes with Sessions hard case. Unit is tested and works fine. Excellent vintage condition as shown in the pictures. Comes with power cord. Owners manual not included. This is a rare find and hard to come by.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 03 April 2018, Comments Off on Oberheim OB-Xa

“Used “not tested” It does Power up. Some Cosmetic Damage Due to age and Previous owner.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 03 October 2017, Comments Off on Oberheim OB-Xa

“Description: Bought in the early Eighties by the same original buyer and the only owner. It was mainly used in a recording studio for some years and then put aside, stored in an air conditioned environment in it’s original case and preserved in an excellent condition. It was recently tested. It fired up, It loaded the sounds, It Auto-Tuned. It may need calibrating (Tuning), but nevertheless all of it’s parts are still the original factory parts, fully functioning, nothing in it has been touched, replaced or repaired except for the memory battery.
Included are the original “OB-Xa Factory Patches Volume 1” on a cassette along with the original “Programmed Patches” and “Owner’s Manual” books. (See pictures)” Click here to visit listing on eBay

OB-Xa, Oberheim @ 12 September 2017, Comments Off on Oberheim OB-Xa

“OBERHEIM OB-Xa Analog Synthesizer Bought in the early Eighties by the same original buyer and the only owner. It was mainly used in a recording studio for some years and then put aside, stored in an air conditioned environment in it’s original case and preserved in an excellent condition. It was recently tested. It fired up, It loaded the sounds, It Auto-Tuned. It may need calibrating (Tuning), but nevertheless all of it’s parts are still the original factory parts, fully functioning, nothing in it has been touched, replaced or repaired except for the memory battery. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 21 March 2017, Comments Off on Oberheim OB-Xa

obxa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 07 March 2017, Comments Off on Oberheim OB-Xa

used obiexa “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.” Click here to visit listing on eBay

DSX, DX, OB-Xa, Oberheim @ 24 January 2017, Comments Off on Oberheim OB-Xa, Oberheim DX Stretch, Oberheim DSX

obie ” Complete Oberheim System including OB-Xa Synthesizer (8 Voice / 120 Programs), DX Stretch Drum Machine (MIDI) & DSX Sequencer w/ Computer Interface Cable

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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 13 December 2016, Comments Off on Oberheim OB-Xa

obxa “You are bidding on an OBXa in excellent condition.

8-voice model

120 Programs

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” Click here to visit listing on eBay

OB-Xa, Oberheim @ 22 November 2016, Comments Off on Oberheim OB-Xa

obxa ” 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” Click here to visit listing on eBay

OB-Xa, Oberheim @ 18 October 2016, Comments Off on Oberheim OB-Xa

ob-xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 11 October 2016, Comments Off on Oberheim OB-Xa

obnxa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 13 September 2016, Comments Off on Oberheim OB-Xa

obie-xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 16 August 2016, Comments Off on Oberheim OB-Xa

obxa “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 ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 16 August 2016, Comments Off on Oberheim OB-Xa

ob=xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 26 July 2016, Comments Off on Oberheim OB-Xa

obx-a “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 19 July 2016, Comments Off on Oberheim OB-Xa

ob-xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 05 July 2016, Comments Off on Oberheim OB-Xa

obx-a “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 17 May 2016, Comments Off on Oberheim OB-Xa Project Machine

obxa“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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 05 April 2016, Comments Off on Oberheim OB-Xa

OBERHEIM OB-Xa “OBERHEIM OB-Xa Synthesizer – AS-IS

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!” Click here to visit listing on eBay

OB-Xa, Oberheim @ 05 April 2016, Comments Off on Oberheim OB-Xa Project Machine

OBERHEIM OB-Xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 29 December 2015, Comments Off on Oberheim OB-Xa

obxa“Oberheim OBXa

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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 17 November 2015, Comments Off on Oberheim OB-Xa

ob-xa “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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 10 November 2015, Comments Off on Oberheim OB-Xa

obi-xa “Oberheim OB-Xa in excellent physical condition:
– Latest firmware revision “G” installed and original factory patches uploaded.

– 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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 03 November 2015, Comments Off on Oberheim OB-Xa

ob-xa “Vintage Oberheim OB-Xa Analog Synthesizer (8 voice):

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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 13 October 2015, Comments Off on Oberheim OB-Xa

oberheim ob-xa“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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 13 October 2015, Comments Off on Oberheim OB-Xa

oberheim ob-xa“Oberheim OB-Xa in excellent physical condition:

– 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.” Click here to visit listing on eBay

OB-Xa, Oberheim @ 04 August 2015, Comments Off on Oberheim OB-Xa

ob-xa“Includes-

(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. ” Click here to visit listing on eBay

OB-Xa, Oberheim @ 15 April 2014, Comments Off on Oberheim OB-Xa Memory Expansion 1570

“This is the Memory Expansion Board for the Oberheim OB-XA.

There are also some OBXA chips that are included in this auction.

1) 107B MM2716Q (two of these in this auction)
2) 120 MM2716Q
3) 013 MM2114N
4) 015 MM2114N

This Memory Expansion Board was fully functional and had been in an OBXA before it was replace with the Encore Kit.” Click here to visit listing on eBay