A-143-3 is a quad modulation oscillator (LFO) as there is always a need of many modulation sources in a modular system.
Each LFO has three waveforms (triangle, rectangle and sawtooth), all waveforms are available simultaneously, a three-position range switch provides a wide range, and an LED displays the LFO rate.
The sawtooth output is twice the frequency of the other waveshapes. The frequency range is from about 2 cycles per minute up to more than 5 kHz.
