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Oberheim today announced a free OS update for its acclaimed TEO-5 synthesizer, adding powerful new features that make the instrument even more versatile and inspiring. The update is now available for download from Oberheim’s website.
https://oberheim.com/products/teo-5-poly-chain-os-update/
The highlight of the update is Poly Chain, enabling two TEO-5 units to be linked for a fully synchronized 10-voice Oberheim experience. This allows for complex chords and lush textures without compromise, and all panel controls are mirrored across both units for consistent sound and performance.
Additionally, the arpeggiator now includes 10 new play modes that go far beyond traditional patterns. Modes like Spiral and Leapfrog introduce new rhythm and melody, creating parts that twist, turn, and evolve in ways that spark creativity.
Also new is Whiplash, a timing mode that keeps each arpeggiator cycle the same length no matter how many keys you hold. This means the note values shift dynamically, producing rhythmic tension and release that stays in-step with the overall bar-length of your composition.
To round out the update, violet noise joins the sonic palette. With its emphasis on high frequencies and reduced low-end content, violet noise is ideal for creating smooth shimmering textures, airy effects, and unique percussive elements.
“TEO-5 was designed to bring the classic Oberheim sound to more players,” said Tom Oberheim. “This update pushes that vision further — adding features that make it even more useful and inspiring.”
TEO-5 combines authentic Oberheim tone with modern creative tools. With true analog oscillators, the legendary SEM filter, linear through-zero FM, and a deep modulation matrix, TEO-5 offers a vast sonic palette in a compact, performance-ready design. Take the next step with TEO-5 and download the Poly Chain OS Update today.
Availability:
The TEO-5 OS update is now available for free download at:
https://oberheim.com/products/teo-5-poly-chain-os-update/
We have the TEO-5 Setup on the RS demo floor and the OB-X8 and OB6 + 16 other synths to try......
TEO-5
- 5-voice, 2x VCOs with saw, square/pulse, triangle, and noise
- Oscillator hard sync and X-Mod with through-zero FM
- Simultaneously selectable wave shapes plus sub oscillator
- Discrete SEM-lineage VCF delivers authentic Oberheim tone and presence
- Filter State knob morphs from low-pass to high-pass through notch, with selectable band-pass mode
- Poly and Mono LFOs with 5 wave shapes and tempo sync
- Meticulously modeled envelope responses based on OB-8
- Modulation matrix with 19 slots x 19 sources x 64 destinations in a flexible design where almost any mod route is possible, including audio rate sources and destinations.
- Enhanced unison allows variable voice stacking from 1-5 voices
- Polyphonic portamento
- Vintage knob recreates vintage synth characteristics by adding voice-to voice variations in component behavior
- Full-featured arpeggiator
- Polyphonic step sequencer with up to 64 steps
- One dedicated reverb effect with damping, pre-delay, decay and tone
- One multi-effect with stereo delay, BBD delay, tape delay, chorus, flanger, Oberheim phase shifter and ring modulator emulations, vintage rotating speaker, distortion, high-pass filter and Lo-Fi
Mod Matrix
TEO-5 MOD MATRIX- a modulation matrix with 19 slots x 19 sources x 64 destinations in a flexible design where almost any mod route is possible, including audio rate sources and destinations.
Hardware
- 256 factory programs in classic and modern styles, with storage space for 256 more custom user programs
- Direct program access, including single-button access to the current set of 16 programs
- The premium 3.5 octave FATAR velocity- and touch-sensitive keyboard allows unparalleled expression and responsiveness
- Velocity sensitivity adds expressiveness to volume and filter
- Channel Aftertouch adds real-time performance-based modulation
- Modulation wheel and spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)
- Hold switch latches held notes on
- Manual switch: when on, the front panel is live; what you see is what you hear
- Transpose controls for +/- 2 octaves range
- Integral, fanless, heatsink-free power supply
- High-resolution OLED display enables patch management and easy access to advanced features
- Weight: 17 lbs. Dimensions: 25” L x 12.75” W x 4.4” H
Ins & Outs
- Right, Left and Headphone outputs
- Footswitch sustain and expression pedal inputs
- 5-pin DIN MIDI In, Out, Thru
- USB MIDI
Unleash the dual digital effects, letting chorus, delay, and reverb paint your sonic canvas. And for a taste of true Oberheim alchemy, dial in emulations of Tom’s legendary Phase Shifter and Ring Modulator, conjuring swirling textures and metallic resonances straight from the golden age of synthesis.
Arpeggiator & Sequencer
TEO-5 is a sonic playground. Its 64-step polyphonic sequencer sparks infinite melodic possibilities, while the multimode arpeggiator keeps your rhythms pulsing and pounding. Or play it live with the premium Fatar keybed, every note awash with responsive joy. From soaring leads to cascading chords and thunderous basses, TEO-5 will elevate every aspect of your musical performance.
Sound Editor 
Unlock the full potential of your Oberheim TEO-5 with TEO-5 SoundEditor! This standalone program and plugin from SoundTower is a full-featured Editor/Librarian that greatly enhances the TEO-5 sound editing experience. With every parameter displayed in a logical, easy-to-use graphical interface, you can create, edit, organize and store TEO-5 Programs on your computer with ease.