via this auction
"Custom built 2 channel LFO. The 2LTUQ18X was designed for extra oscillators adding to analog syths, or other devices that can use an extra few oscillators.
Output voltage on the "Var output" is 10 volts Peak to Peak.
Outputs for Square and Triangle is 6.9Vdc Peak to Peak (Under a 12Vdc adapter)
Output pulse for Pulse is 10 volts peak to peak.
All IC's are sockets and "point to point" wiring inside."
Twin LFO, VCO Control Unit Test 1
YouTube Uploaded by pieruixmaster on Jan 4, 2012
"Twin High output gain LFO, VCO Control Unit with Mix feature and Shape controls. Filter and Frequency controls."