The 1201 VCO is based on the superb new SSI2130 chip. The 1201 offers all the features of our original Model 1200 with massively improved range, tracking and stability. We’ve added continuous control of pulse width modulation, and separate linear and exponential FM inputs with convenient input attenuators.
Most importantly – the 1201 offers linear Thru-Zero FM (Frequency Modulation) and PM (Phase Modulation). When paired with a secondary oscillator, these modulation types provide extremely rich harmonic textures. Thru-Zero (or TZ) has proven to be difficult to produce in the analog realm prior to the availability of the SSI2130 chip.
