2hp Rash
Eurorack noise source module generating real-time digital noise with raw, unstable character.
Overview
The 2hp Rash is a Eurorack-format digital noise source designed by 2hp. It generates noise algorithmically in real time using a microcontroller, producing a gritty, dynamic texture described as "alive" compared to static samples. The module features one knob that sweeps through noise types, one button acting as a manual trigger, and one jack serving as a trigger input. It outputs a single audio signal and draws 30mA from the +12V rail, with no requirement for -12V power. At 2HP wide, it is built for minimal footprint in modular systems.
Specifications
| Module Type | Eurorack module |
| Width | 2HP |
| Power consumption | +12V: 30mA, -12V: 0mA |
| Controls | 1x knob, 1x button, 1x jack |
| Knob function | Sweeps through noise types |
| Button function | Manual trigger |
| Jack function | Trigger input |
| Outputs | 1x audio |
Design
The 2hp Rash is a digital module built around a microcontroller that computes noise algorithms in real time. It is not sample-based, resulting in a raw, unstable, and dynamic character. The noise output is described as gritty and unpredictable, evoking sounds like corrupted floppy disks, untuned radio hiss, or vinyl crackle run through a bit-crusher.
Reception
The Rash is used for adding grit, crackle, hiss, or digital chaos to modular patches. It excels at generating glitchy textures and dirty layers but is not intended for pristine, filtered noise. It rewards experimentation and thrives in unpredictable sonic roles, making it a specialized tool for dynamic sound design.
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