Oberheim Matrix 6 Analog Keyboard Synthesizer

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via this listing

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Oberheim Matrix-12

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via this eBay listing

"This particular unit has just been professionally serviced by Bell Tone Synth Works in Philadelphia, ensuring long-term reliability. Part of their work Known for their meticulous synth repair and restoration, Bell Tone’s work guarantees that this Matrix-12 sounds as bold and warm as the day it left the factory.

Service Highlights include -
Rebuilt power supply: replaced main rectifier diodes, all polarized capacitors, and voltage regulators
Replaced memory battery and reloaded factory presets
Installed ground noise service change: added 47 ohm resistor between chassis and bottom voice board, and changed C105 to 1nF capacitor. This reduces noises that causes some voices to randomly fail autotune
Installed new control panel overlay from Sweet Discrete UK, the best overlay available
Cleaned pots"

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1980s Oberheim Matrix-12 (Fully Serviced) w/ ATA Flight Case SN P63707

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via this Reverb listing

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"The Oberheim Matrix-12, released in 1985, is a legendary analog synthesizer known for its deep modulation capabilities and lush, complex sounds. It was essentially two Oberheim Xpander modules combined into one keyboard unit, offering 12-voice polyphony with dual oscillators per voice and extensive matrix modulation routing. Designed during the peak of Oberheim's innovation period, the Matrix-12 marked the end of the company's original era before Tom Oberheim's departure. Despite being released just before digital synthesis took over the market, it remains a revered instrument for its rich analog tone and flexibility.

This synth is in fantastic shape for it's age, minor cosmetic blemishes throughout. Includes a newer flight case by Clydesdale as shown.

The recent servicing ensures that all voice cards, filters, envelopes, and modulation routings are fully operational, with cleaned contacts, calibrated tuning, and updated components as needed for optimal performance. (Serial no. P63707)

Service notes:

FIRMWARE V 1.1
-Recapped and refurbished power supply
-Repaired several bad voices
-Replaced one of the displays
-Disassembled voice card stacks and repaired damaged hinge hardware
-Reinstalled PCBs
-Cleaned all controls and switches
-Cleaned key-bed assembly
-Replaced missing cassette interface IC
-Replaced memory battery and reloaded factory presets
-Replaced volume potentiometer
-Cleaned bender assembly
-Calibrated DAC and displays"

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Oberheim Stretch DX with Electrongate MIDI

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via this Reverb listing

"Recently fully serviced and midi upgrade added by Paul White of Electrongate

Works and sounds amazing"

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Oberheim has BIG SOUND !

video upload by No Time to Play

Oberheim SEM Patch Panel SN 0846

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via this Reverb listing

"This is the 2007 reissue of the Oberheim SEM (Synthesizer Expander Module) with the Patch Panel edition, hand-crafted under the direction of Tom Oberheim himself. A faithful recreation of the original 1974 SEM, this version adds extensive CV patching capabilities, making it perfect for integration into modern modular and analog setups.

- Classic discrete analog circuitry with the unmistakable SEM tone

- Beautifully musical multimode filter (lowpass, bandpass, highpass, notch)

- Fully patchable: CV/Gate control over every major function

- Designed for modular systems, Eurorack expansion, or standalone use

- Compact, rugged metal housing with vintage aesthetics

This SEM is a favorite for its warm, punchy sound, effortless musicality, and the ability to serve as either a raw tone source or a characterful processor. Perfect for analog purists, modular enthusiasts, or collectors of classic synth gear.

This unit is practically new, never used, in its original box.

I have another identical SEM, also never used, but it's not in its original box. Enquire if you want two of them."

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Oberheim OB-X 8-voice synthesizer w/ Encore MIDI SN 803405

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video upload by Richie Vega

"Vintage 1980 Oberheim OB-X 8-voice synth FOR SALE [voice card demo] for Reverb listing"

via this Reverb listing

"Vintage (~1980) Oberheim OB-X [8-voice] with Encore MIDI installed!

This has been my personal holy grail analog synth for many years. The deluxe Encore MIDI kit was professionally installed and gives the unit full MIDI in/out/thru capabilities as well as improved OS system and the ability to store 120 factory patches (i.e. OB-Xa). The synth was serviced by a pro tech and working flawlessly until just recently. Currently, there is no audio being sent from the L/R Mono output jacks. The digital processing section appears to be working normally as the knobs and LED switches are still functional (see video demo link). The eight individual voice cards were all calibrated previously and were each in working order."

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Oberheim TEO 3 quick patches

video upload by Hi Entropy

Fun with Oberheim TEO-5 Analog Synthesizer

video upload by James Dyson

J3PO OB Tribute Patches for Omnisphere -- OFFICIAL SOUNDS DEMO

video upload by Julian "J3PO" Pollack

"In this video, I demo all 50 patches from my new J3PO OB Tribute library for Spectrasonics' Omnisphere--a patch bank dedicated to the legendary Oberheim synthesizers.

This collection is inspired by the iconic Oberheim synths: OB-X, OB-Xa, OB-8, OB-6, Matrix-12, and the Two Voice Pro. Every patch was built inside Omnisphere using Oberheim-style oscillators and filters, with a few custom samples from my own Oberheim synths to bring even more analog character into the mix.

In this demo, I use the OB-6 strictly as a MIDI controller to play the sounds (and for some visual homage to the great OB synthesizers). All the sounds you are hearing are coming from within Omnisphere--including the FX.

The full library is available now for $24 at https://www.j3po.net/shop"

Oberheim TVS-Pro

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via this Reverb listing

06.17.2025 Man Machine for fun

video upload by batchas

"Music as therapy...
As usual I'm recording directly to one stereo track and I noticed while watching the video that the Minimoog is too loud (still I love its sound!) and the 808 bass drum a bit too low, but as I currently want to spend as less time as possible on the same project, I won't record another take and I'll move on to something different.

Sounds: Mos-Lab 2500, muSonics Minimoog, Roland Juno 60, Waldorf Q, Waldorf Pulse +, Oberheim Matrix 1000, Roland TR-808, Ace Tone Rhythm Ace.
Effect: Eventide H9, Hologram Microcosm, Audiothingies Doctor A."

06.17.2025 Man Machine for fun [The instruments I used]

video upload by batchas

Oberheim TEO-5 - Generative Modulations

video upload by Scott McAuley Sounds

"Patches will be available at https://www.orano.co.uk/shop or http://www.synthsounds.co.uk

*No External effects used in this demo, everything you hear is one patch on hold from TEO-5*

Patch 'SM Sync Notes' - will be included in Labyrinth Vol.2

This patch is utilising every mod slot available to users in this remarkable synth. Quantised pitch mod on one oscillator, makes for some very textured and interesting sounds. This Patch runs on its own, no sequencer, no arp, just modulations causing the quantised pitch to dance. Great for generative type sounds and atmospheres.

Enjoy.

SM

© Scott McAuley. All rights reserved."

06.15.2025 Erik Satie - Gnossienne for fun

video upload by batchas

"Music as therapy...
Sound source: Mos-Lab 2500, muSonics Minimoog, Roland Juno 60, Waldorf Q, Oberheim Matrix 1000. Waldorf Q and Oberheim Matrix 1000 are producing the kind of strings/guitar higher melody.
Effect: Eventide H9, Audiothingies Doctor A."

Van Halen - When It's Love - Arcade Orchestra Teaser

video upload by JimDaneker

"ARCADE ORCHESTRA is an epic reimagining of the biggest hits of the 80s. It will have all the elements of 80s pop - all the synths, drum machines, and production of the time - but with a much bigger, cinematic approach. Arcade Orchestra will be an immersive live experience and feature major guest artists, a live orchestra, a large percussion ensemble called STIKYARD, a world-class band, choir, and cutting-edge production.

Stay in touch and follow the journey back...FROM the future:

Website: https://www.arcadeorchestra.com"

Oberheim Strummer Perf/x Keyboard to Guitar Chord Converter

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via this Reverb listing

"The Oberheim Strummer is a MIDI effect processor that transforms keyboard chords into simulated guitar strumming, enabling realistic guitar-like performances from a keyboard. It analyzes MIDI input, adjusts chord voicings, and adds strumming effects, sending the altered MIDI data to a sound source. This is much more than playing an arpeggio or creating a small delay on the notes, the Strummer reinterprets a piano chord voicing into one that would be appropriate on a six-string guitar. Different presets approach the playing differently, from power chords to fingerpicking, to acoustic strumming and lead solos; the results are quite remarkable.

(It also includes a versatile MIDI echo feature, allowing for delays and repeats of notes at varying velocities to simulate audio delay effects.)

Has 4 footswitch jacks, MIDI In and Out. Includes power adaptor and original owner's manual. Measures 9" x 7" x 4""

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Louis Cole - “Bank Account” Synth Cover (Oberheim OB-X8)

video upload by Emilio Rivera

"Hey everyone! It’s been a while. I can hardly believe it’s been over 3 years since my last video and I want to apologize for my lack of activity. To be honest, I’ve had a love-hate relationship with music for a long time and I thought I had quit for good, but thankfully my friends didn’t let that happen. Praise God! So here I am with a short video of a silly little Louis Cole song that I decided to learn. This one is harder than it looks but it was really fun and satisfying to play once I got the hang of it. I hope you enjoy it!

I also want to say thank you to everyone for continuing to support my preset packs and watching my videos. It really means a lot to me. Lord willing, I’ll be back again soon with another video! Until next time :)

-Emilio"

Oberheim TEO-5 Synth Jam | Percussive FM Arp & Ambient Textures

video upload by Sidetrack Walker

"A pure synth journey with the Oberheim TEO-5 – no talking, no overlays, just evolving textures and raw sonic movement.

This live synthesizer jam explores the rhythmic and textural possibilities of through-zero FM, snappy envelopes, and sample & hold (S&H) modulation. Starting with a tight percussive arpeggiator patch, the track moves into ambient territory midway, using the TEO-5’s built-in BBD delay with endless feedback and rich stereo reverb before returning to its rhythmic roots.

Whether you’re here for synth inspiration, immersive listening, or just want to experience the TEO-5 in action, this one’s for you.

🎧 Headphones recommended!

PS: Apologies for the less-than-ideal lighting — let’s call them lo-fi vibes by accident. The jam deserved to be shared regardless. 😉

🔍 Key patch features (for the synth community):
• Through-zero FM
• Per-step S&H mod oscillator tuning
• Percussive envelope settings
• Stereo voice spread
• BBD delay in feedback loop
• Internal reverb for lush ambience

Thanks for listening!"

Oberheim TEO-5 Bass Tip | Cancel Out Your Low End for Clean Pads!

video upload by Sidetrack Walker

"Unlock a simple phase cancellation trick on the Oberheim TEO-5 to control the low end (bass region) of your patches. In this quick, voice-over tutorial, I use a lush FM pad to demonstrate how combining triangle & square waveforms thins out the bass. Use this on pads to prevent mud, or avoid it when you want a solid low-end for bass lines.

🎧 Use headphones to hear the difference.

What you’ll see & hear:
• Phase cancellation demo on a TEO-5 FM pad
• Waveform switching to show low-end attenuation
• Why this trick helps pads sit cleanly in the mix
• Why you should avoid it for bass patches
• No external FX—just the TEO-5’s raw sound with mild limiting

Whether you’re into sound design, mixing tips, or simply love the TEO-5’s character, this quick tip will add a new tool to your synthesis workflow."

06.11.2025 Erik Satie Gymnopédie for fun

video upload by batchas

"Sound source: Mos-Lab 2500, muSonics Minimoog, Roland Juno 60, Waldorf Q, Oberheim Matrix 1000 and Mellotron plugin with choir voices (Valhalla Reverb on it).
Effect: Eventide H9, Audiothingies Doctor A, Hologram Microcosm.
One single take. Keeping its imperfections."

06.11.2025 Erik Satie Gymnopedie [The instruments I used]

video upload by batchas