Unique, custom and small batch musical instruments from North Dakota

Four BBD-based audio paths create lush sounding chorus, vibrato and flange effects. Each BBD path has its own dedicated output, allowing for quadraphonic, surround-style chorusing. Stereo summing outputs are also included.

Four multimode diode filters run in parallel, providing filtering for the four BBD audio paths. There's a bandpass mode, and a multimode, which is sweepable from lowpass, through notch, to highpass.

The real thing. The entire audio path is true analog from the inputs to the outputs. Even the modulators are all-analog.

Five conventional LFO waveforms are available as additional BBD clock modulation. Rate ranges from 0.1Hz to 40Hz. 

The Quadrature LFO produces four sine waves, each 90 degrees out of phase with the next. It can be used to modulate the four BBD clocks, producing swirling four-channel chorusing.

This modulator can produce signals similar to a Sample & Hold, but with the addition of an adjustable slew limiter and a "chaos" clock-time randomizer. Add anything from subtle nuances to extreme glitches to your sound.

A high quality, dual-axis joystick can be assigned to a number of destinations, allowing for even more expressive control.

Soft-touch, illuminated fader caps round out the experience.

Eurorack-compatible 1/8" (3.5mm) TS audio and CV inputs and outputs are included. 

Heavy duty 1/4" (6.35mm) TRS audio inputs and outputs are also included, supporting balanced and unbalanced audio.

We've spent hundreds of hours auditioning the subtle differences in tones produced from various component chemistries at specific locations in the circuit topologies, to arrive at a the sound we call Retrogradus.

More options to control and be controlled by CVs over more parameters

Four attenuverters for more control over output polarity and ranges for Joystick and more.

Two BBD-based audio paths for true stereo echo. Can be switched to mono to double the maximum delay time. We've also included Vibrato rate and depth controls.

The real thing. The entire audio path is true analog from the inputs to the outputs. The clock that drives the echo is also true analog. 

Measuring approximately 6" x 4" x 2", it will be our smallest and least expensive instrument to date. We still use only the best sounding topologies and components, and the highest quality hardware available.

Because there are no digital features inside the box, this model has no tap tempo, midi, patch memory, or digital displays. Thus, there is no firmware to later update.

Two BBD-based audio paths for true stereo echo. Longest delays up to 1638ms in stereo, or combined into mono for up to 3276ms. Tap Tempo is available while in Digitally Controlled VCC mode, and a frequency counter is available while in Analog Controlled VCC mode.

Two multimode diode filters run in parallel, providing stereo filtering for the two BBD audio paths. There's a bandpass mode, and a multimode, which is sweepable from lowpass, through notch, to highpass. Selectable PRE and POST-echo position.

The real thing. The entire audio path is true analog from the inputs to the outputs. The LFO and Texture generators are analog. 

Five conventional LFO waveforms are available as additional BBD clock modulation. Rate ranges from 0.1Hz to 40Hz. 

The clock that drives the echo has a pure-analog mode, known as VCC, where the computer doesn't touch the signal. It's switchable to a digitally-assisted voltage controlled clock (DAVCC) to enable Tap Tempo and MIDI control. For TT/MIDI mode, an MCU constantly monitors the analog clock's frequency, adjusting it subtly to achieve the desired tempo. There's a Tap button, and a euro jack for tap input.

This modulator can produce signals similar to a Sample & Hold, but with the addition of an adjustable slew limiter and a "chaos" clock-time randomizer. Add anything from subtle nuances to extreme glitches to your sound.

A high quality, dual-axis joystick can be assigned to a number of destinations, allowing for even more expressive control.

Soft-touch, illuminated fader caps round out the experience.

Eurorack-compatible 1/8" (3.5mm) TS audio and CV inputs and outputs are included. 

Heavy duty 1/4" (6.35mm) TRS audio inputs and outputs are also included, supporting balanced and unbalanced audio.

Store and recall your patches! A 7-Segment readout displays the echo rate in BPM, milliseconds, or raw clock frequency. An animated bar graph borrowed from the R70M displays your current echo position or VCC modulation voltage.