Behringer - 921
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 tonality of your signal. Finer frequency control is provided via the Scale and Coarse RNG switches. Patch in some control voltages via the two CTRL IN jacks and adjust with the Rectangular Width knob to create some fat Pulse Width Modulation sounds.
Multiple ins and outs are available on the 921 VOLTAGE CONTROLLED OSCILLATOR. Three summed Frequency Control Inputs as well as auxiliary and waveform outputs can be used to introduce modulation signals into the 921 VOLTAGE CONTROLLED OSCILLATOR and out to other modules to create complex patches that are perfect for your next studio session or jam.