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Manufacturer Description:

module a-114 contains two separate ring modulators. a ring modulator
outputs the product (multiplication x & y) of the signals at inputs x
and y. it's similar to a vca, but whereas a vca only responds to
positive voltages at the inputs (2-quadrant multiplication), the ring
modulator responds to both positive and negative voltages (4-quadrant
multiplication).

the ring modulator thus provides a refinement of amplitude modulation
(am). ordinary amplitude modulation will output the original carrier
frequency fc as well as the two side bands (fc - fm, fc + fm) for each
of the spectral components of the carrier and modulation signals - but
ring modulation cancels out the carrier frequencies, and just lets the
side-bands pass to the output.

a ring modulator is used for the production of bell-like sounds, alien voices, or just to produce new timbres.

this module has a maximum current draw of 40ma. it requires 4 te/hp worth of space to fit in a eurorack frame.