Built in 1U format, Mosaic 's Analog VCO is an analog oscillator with an assertive sound. The powerful oscillator, whose core is a discrete Curtis IC CEM3340 chip, delivers sawtooth, triangle, sine and square with pulse width modulation. Incidentally, this is the same chip that was used in some Roland classics (e.g. SH-101). FM can be used linear or exponential. The pulse width of the square waveform can be set manually and modulated with a control voltage. The hardsync input expands the sound spectrum with classic sync sounds.