Schlappi Engineering

The Boundary is a multi-purpose modulation and signal control module combining a cycling slew with a four quadrant multiplier VCA. It can generate envelopes, act as a modulation oscillator, and provide ring modulation or distortion via its VCA output.

Boundary Layer is a triple cycling slew module that can act as a modulation oscillator, voltage controlled slew, or AR/AD envelope generator on each of its three channels. It provides combined MAX, MID, and MIN outputs and can be patched for stereo drone synthesis at audio rate.

BTMX (BitMix) is a four channel selectable logic function module offering hands on control over logic and rhythmic gate signals. Gate outputs are summed with binary weights to generate stepped voltages for melodic or modulation signals.

Cascade is a passive expander for the Eddy mixer that provides access to individual VCA outputs for use as a triple stereo VCA, as well as access to feedback filter outputs and simultaneous clean, compressed, and distorted bus outputs.

The 100 Grit is a Eurorack module combining distortion, a VCA, and a low pass filter with 8 brass touchpoints. It can operate as a vintage-voiced VCA and filter or as a screaming distortion and noise effect.

BTFLD (Bit Fold) is a distortion, wavefolder, and four-bit asynchronous analog to digital converter module. It can act as a distortion or wavefolder effect at audio rate, or generate rhythms and gates from envelope or LFO inputs.

The Interstellar Radio is a destructive transmission line module that modulates and demodulates a signal using different clock references, producing extreme distortion and frequency modulation of complex and noisy timbres. It functions as an effect or as a complex non-v/oct oscillator.

Eddy is a three channel stereo CV controlled mixer with sidechainable compression and distortion, designed as a compact submixer. It features normalized feedback paths through bandpass filters for experimental tone shaping and percussion synthesis.

Angle Grinder is a quadrature sine wave oscillator that can also function as a filter and distortion effect depending on knob positions and input signals. It produces four phase-related outputs and offers voltage controlled harmonic distortion or state variable filtering.

The Three Body is a phase and frequency modulation toolkit consisting of three normalized oscillators, each with sine, triangle, saw, and square outputs, designed to bring digital modulation techniques to an analog interface.

The Nibbler is a four-bit digital accumulator based on CMOS logic that counts in binary from zero to fifteen, with individual bit inputs/outputs and stepped voltage outputs. It can generate rhythms, modulation voltages, melodies, subharmonics, and modem-like noise depending on clock speed.