The Hertz Donut is a complex digital oscillator with a unique mod matrix based 3 operator FM voice and 3 waveshaping modes. The MK3 version takes elements of the original two Hertz Donuts (that were more like a digital re-envisioning of the Buchla 259) and combines them with the 80s synthesis techniques found in the Yamaha DX and Casio CZ synthesizers. The result is a super interesting very harmonic source with an evolving textural sound.

Of course the MK3 series brings many digital conveniences to the modular, adding a built in tuner and full preset recall/morphing over every knob and button, along with extra preferences on user interface. All that make the HD3 a great choice as a unique and super fun sound source for your system.

This used module is in great shape with no rack rash.
Rock n Roll Vintage Guitars

Rock n Roll Vintage Guitars

Industrial Music Electronics
Brand New
16 Years
Rock n Roll Vintage Guitars
For Sales Heith or Andrew
Chicago, IL
1:01 AM
Weekdays 11am to 7pm CST Weekends Noon to 5PM CST Closed Christmas day, New Years day and a few more holidays

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We ship to both domestic and international customers. We reserve the right to cancel and refund international orders that might be impacted by CITES export regulations. Please see our website for all current terms and conditiins.

All Guitars have a 48 hour authentication period. Buyer is responsible for shipping back returned items with no exceptions. All returned items must arrive in the same condition they were sent. Buyer must contact us within 24 hours of receiving a damaged item. Please see our website for current return policy details.