Behringer 921 Voltage Controlled Oscillator - ANALOG VOLTAGE CONTROLLED OSCILLATOR MODULE FOR EURORACK

(This text is machine translated) The first System 55, 35 and 15 synth modules came out in the early 1970s and tended to be extremely expensive. They were mostly all discrete transistor designs, as op-amps were very expensive at the time. The discrete circuits gave the modules a very distinctive sound and were used by artists such as Keith Emerson, Stevie Wonder, Tangerine Dream and many others, giving us some of the greatest records we have ever heard. Modular synths were a pivotal development in electronic music and are about to get better today. The 921 voltage controlled oscillator module features six selectable waveforms (sine, triangle, saw, inverted saw, square and inverted square). These can be adjusted via the Frequency and Range controls to change the pitch of the signal. Finer frequency control is provided via the Scale and Coarse RNG switches. Plug in some control voltages via the two CTRL IN jacks and adjust them with the rectangular Width knob to create some pulse width modulation sounds.