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![](//2.bp.blogspot.com/-9sTSth8FWn4/UUVluWjWzPI/AAAAAAAG0dg/xutM8Uu-qlg/s400/$T2eC16dHJH8E9qSEW8mZBRRM(-PMz!~~60_57.JPG)
via
this auction
![](//1.bp.blogspot.com/-Tgm8sdOJ9KE/UUVmR3KXWTI/AAAAAAAG0eY/2wZnSCkaF68/s400/$T2eC16hHJGIE9nnWsyOrBRRMYNzQ0w~~60_57.JPG)
"Classic 1970's Programmable (Patch) Dual Oscillator Analogue Synthesizer- Keyboard from Oberheim.
![](//4.bp.blogspot.com/-LUmR8RHMhB0/UUVmSLdRFhI/AAAAAAAG0ec/X6IzUyRaMLM/s400/$T2eC16RHJF8E9nnC7R,pBRRMYVT86!~~60_57.jpg)
Features:
Monophonic analog synthesizer with a 37-note keyboard
2 syncable and detuneable VCOs with cross-modulation and PWM.
Waveforms are; pulse, triangle and sawtooth, with a switchable sub-waveform.
Noise generator is also included.
Resonant VCF with its own ADSR envelope generator is available as the filter.
Switchable between 2-pole (12dB/octave) and 4-pole (24dB) modes and features controls for cut-off, resonance and keyboard tracking.
Single LFO: Switchable between square, sine and random (sample/hold).
Rate/Delay controls and can be routed to the VCF, VCOs and VCA.
Internal RAM holding 8 user patches is included.
Cassette interface for storing more sounds.
Audio input for modulating external sounds through the filter.
Pitch bend / modulation controls
CV/gate interface for external control.
Incredibly Rare Synthesizer - I believe this is the only OB1 on sale anywhere worldwide currently."
Interesting to think about.