Industrial Music Electronics - Hertz Donut Mark III

The Hertz Donut Mark III is a complex phase distortion and thru zero FM oscillator with unison detuning, programmable modulation matrix and external input. It is designed to mimic the acoustic characteristics of industrial machines. The module is capable of generating breathtaking spectral developments. The preset manager stores eight complete panel/menu states for immediate recall under manual or voltage control. It can also be used to create randomized presets. Thanks to an OLED display, very easy to operate!

The Hertz Donut Mark III consists of a main oscillator, two sinusoidal modulation operators and an external audio input.

The simulated resonance peak, familiar to lovers of phase distortion, is also present and continuously controllable. The popular "fractal" distortion from previous iterations of the Hertz donut is available simultaneously. The fold potentiometer is assignable to control one of the three parameters simultaneously, and the CV input can also be assigned to one of the three.

The two modulation operations can be set to different precise frequency ratios of the main oscillator. A variety of control voltage inputs allow full control over the patch and respond within a +/- 10V range.

The AUX output represents the output of one or both modulation operators, also with optional unisono. The mix output is an analog sum of the main and aux outputs, allowing parallel construction of the FM algorithm.

Thanks to a preset manager it is possible to store up to eight complete panel/menu states and recall them under voltage control. In Morphing Mode, you can smoothly fade from one stored state to another.

Features:

• Main oscillator with resonant, phase, and fractal distortions (cv and manual knob destinations selectable)
• 8 octave tuned CV response (1v/octave)
• 2x sinusoidal modulation operators with frequency interval lock or free operation
• External thru-zero FM input
• 4x3 modulation matrix mixer with master amount control
  128x32 OLED display providing realtime note, frequency, and modulation information, as
• well as menu access to deep setting
• All parameters may be placed under control of morphing preset manager, with 8 onboard presets (nonvolatile)
• 96 kHz sampling rate