SUB+RM is a 2-in-1 analog effects module for Eurorack modular synthesizers.

SUB = subharmonic generator, primarily designed for sub-octaves but will behave differently (output different sub-harmonic notes) depending on input waveform and how hard you drive the input/dry level

RM = Ring modulation. Classic four-quadrant multiplier

The effects are not wired in series, and can therefore be used independently of each other.

Module size is 6 HP