A-111-4 Quad Precision VCO

Doepfer's quad precision VCO: four analogue VCOs on CEM3340 cores and a Master section, in 18 HP.

Key features

• Four VCOs, each with triangle, sawtooth and square outputs, its 1V input and a sync input
• Per VCO: octave switch (+1 / 0 / -1), Tune, modulation input with its level and destination switch (XM or LM/PM)
• Master section: 1V and XM inputs for all four, octave switch, Tune and XM level, summed outputs and a CV output
• Each VCO with its own internal +/- supply, for stability and against unwanted locking between the VCOs
• Standard (aluminium) or Vintage Edition (black) panel