Ring Modulator
http://www.analoguesystems.co.uk/modules/rs20.htm
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AC-coupled ring modulator, based around the AD633 multiplier IC. The original frequencies are suppressed and you can hear only the sum of the frequencies (X + Y) and the difference (X-Y). The ring modualtor works very clean. If only one signal is connected you won´t hear anything at the output. That is not the case with most ring mods as often you hear a bleed through.comes with an AS to eurorack adapter - can fit into eurorack as well as classic AS cases

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