HM5537 - 4 Channel Oscillator Controller and Quantizer to provide voltage precision over a handful of various oscillators
http://www.industrialmusicelectronics.com/products/20/
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I have had this for about six months, buying it originally to use in my live case. I changed my setup and short of powering this on and using it once or twice, it has been sitting in the box. Selling it as I don't see myself going back to the other setup. Very cool module, and I planned to use it to quantize four voices and keep them all in sync. The built-in detune per channel is really cool, and with he slew and vibrato this can potentially replace two or three modules. Currently has firmware 2.0b, but I can revert it back to 1.5.
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