Discrete DC-Coupled Analog Oscillator Identical OSCILLATION sound engine—the historic (32 years into this), gorgeously stable, and rich SE oscillator, slimmed down to 8hp essentials, with no tonal or quality sacrifice allowed; the Slimo is MidiMini big sonically. Compromise perfected. Three position octave switch is a bonus. 6 PotsFREQUENCY, FINE, FM CV, PULSE WIDTH, PW CV. 1 SwitchOCTAVE - Three position range switch: +1/-1 octave switch. 7 Patch Points1 V/O, FM CV, PW CV, TRI, SAW, SQUARE. All Controls and Patch PointsFREQUENCY – Oscillator frequency attenuator.FINE – Oscillator fine-tune trim.FM CV – Frequency Modulation control voltage attenuverter.OCTAVE – +1/-1 octave switch.PULSE WIDTH – Pulse Width attenuator.SYNC IN – Oscillator sync control voltage input.PW CV – Pulse Width control voltage attenuverter.1 V/O – One volt per octave control voltage input.FM CV – Frequency Modulation control voltage input.PW CV – Pulse Width control voltage input.TRI – Triangle wave output.SAW – Sawtooth wave output.SQUARE – Square wave output. http://studioelectronics.com/products/synths/boomstar-modular/slim-o 8HP 20 mA +12V 39 mA -12V ? mA 5V 40 mm Depth