Humble Audio Quad Operator

One knob per function design for true ease of use

Any FM algorithm is possible via modulation matrix

The Algo expander provides algorithm save/recall and crossfading capabilities

Independent output per operator

Virtual VCA per operator for both animating modulation and output volume control

Includes a dedicated “AR FM” input with its own modulation sends, designed to bring an audio rate signal in from your rack for use as a modulator. Try processing a phase locked operator, and feeding it back in!

Each operator can also be unlocked then tuned and patched independently, making the module a great general purpose oscillator bank

Convincing digital emulation of classic analog waveshapes—sine, triangle, square, and saw

An LFO mode, enabled the generation of phase locked, complex modulation signals