Oberheim OB-X8 Analog Desktop Synthesizer in Excellent Condition w/ OG Box
Oberheim OB-X8 Analog Desktop Synthesizer in Excellent Condition w/ OG Box
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For sale: Oberheim OB-X8 desktop analog synthesizer module in perfect working order and excellent, like-new cosmetic condition. If classic Oberheim sound and hands-on programming are your thing, this one deserves a look. It's a synth for the purists, with an all-analog signal path and no onboard effects. Pairs nicely with the Chroma Console (among others) if you're wanting to add outboard effects.
Details below:
Updated to the latest OS (2.0.0.1).
This unit is in excellent, like-new cosmetic condition. It's really quite minty, but we're listing conservatively as excellent. Please examine all photos carefully, as we have done our best to document the condition.
The OB-X8 brings together the sound architectures of the OB-X, OB-Xa, and OB-8 in an eight-voice desktop module. Two discrete analog oscillators per voice, SEM-style and Curtis filters, and selectable envelope responses let you explore each instrument's character or combine elements from different models. It's well suited to classic synth brass, strings, basses, and leads, with split and double modes for combining two patches and an arpeggiator for rhythmic parts. The Vintage control adds adjustable voice-to-voice variation, while the front panel keeps the main sound-shaping controls within easy reach.
Sale includes the synth, original box and packing, quick-start guide, stickers, heavy-duty IEC power cable, and free shipping.
- Guaranteed as described or your money-back.
- 15-day return window. See return details.
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We strive for accuracy, but errors can occur. Please verify details or contact us with questions.
- Sound Engine:
- Eight-voice analog subtractive synthesis with an all-analog audio path.
- Combines the OB-X, OB-Xa, and OB-8 architectures, with settings from different models usable together.
- Oscillators:
- Two discrete analog VCOs per voice, with sawtooth, square/pulse, and triangle waveforms.
- Oscillator sync, adjustable triangle cross-modulation, and pulse-width modulation.
- Separate oscillator and noise level controls.
- Filters:
- Discrete SEM-derived filters for OB-X character and Curtis filters for OB-Xa/OB-8 sounds.
- SEM high-pass, band-pass, and notch modes extend the low-pass palette.
- Envelopes:
- Separate ADSR envelopes shape filter movement and volume.
- Selectable responses reproduce the different OB-X, OB-Xa, and OB-8 envelope behavior.
- LFOs & Modulation:
- Main modulation LFO plus a separate vibrato LFO.
- Two modulation buses provide independent depths for pitch/filter and pulse-width/volume destinations.
- Page 2 adds modulation delay, LFO triggering, keyboard tracking, and quantized modulation.
- Voice Character & Stereo:
- Vintage control adjusts variation between voices.
- Unison stacks from one to eight voices.
- Programmable panning places voices across the stereo field.
- Split & Double Modes:
- Play two programs across separate keyboard zones or layer them together.
- Programmable balance controls the relative level of the two sounds.
- Arpeggiator & Performance:
- Forward, reverse, alternating, and random note-order modes.
- Hold, chord memory, and octave transposition.
- External MIDI velocity and channel aftertouch support.
- Program Memory:
- More than 600 programmable locations, including Split and Double storage.
- Factory library includes sounds from the OB-X, OB-SX, OB-Xa, and OB-8.
- Programming Interface:
- Dedicated panel controls, OLED display, and deeper Page 2 parameters.
- Manual mode builds sounds from the physical control settings.
- Audio & Effects:
- Unbalanced 1/4-inch left/right outputs, separate mono output, and stereo headphone connection.
- No onboard effects.
- MIDI, USB & Pedals:
- 5-pin MIDI In, Out, and Thru, plus class-compliant USB MIDI.
- SysEx program backup and transfer.
- Sustain, volume-expression, filter-expression, and external arpeggiator-clock inputs.
- Desktop Format:
- Walnut end panels, without an integrated keyboard or performance levers.
- Approximately 22 x 8.5 x 4 inches and 9.6 lb.
- Power: Internal fanless supply with grounded IEC inlet, rated for 100-240V AC, 50/60Hz, 22W.

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