Oberheim TVS-1 1978 Black/White Panels SN 0250

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via this auction

"Serial #0250. Excellent example of this classic two voice synth. No sequencer on this one. Clean mods were added to this in it's past for the additional controls on the back:

CV 1 IN
Gate 1 IN
Filter 1 IN
Filter 2 IN

There are also two switches added to the front panel to enable/disable SEM 1 and SEM 2 completely.

This synth sounds amazing and has just been expertly cleaned, calibrated, and serviced [including jwires and buss bar]"

Note the black mod section.