via this auction"Oberheim two voice for your consideration, this unit just got serviced by the local bay area expert on vintage synths. It has modifications, external clock input so you can trigger the sequencer from a gate and it even has a polarity switch and gain knob so it can accept different clock types. It has a pot modded onto each SEM that is for external audio input gain. It has a sync switch which allows you to sync osc1 on SEM2 to osc1 on SEM1 so you can have all the oscillators synced! It has two outputs added for the individual SEMs though they seem to be extremely hot signals and overdrive if pushed high at all. There are a couple switches I can't understand, one on each SEM that seems to give more resonance maybe and one mystery one on the sequencer. This synth has obviously had some serious mod work done, I had the tech calibrate the SEMS so they tune nicely and the keyboard works great! Overall a very functional and incredible sounding two voice, I never knew how cool the sequencer was until I played it."
