Echoa
Firmware for Alchemy Lab (Hermetic Modular)
Official stereo dual delay with four delay lines that move from comb resonance through echo to reverb, with series, parallel, mono and spectral routing, per-line engine character, presets and parameter locks.
- Distribution
- Browser installer (WebMIDI / WebUSB)
- License notes
- Closed-source official firmware, included with the Alchemy Lab. Built on the MIT-licensed Alchemy SDK.
- Homepage
- hermeticmodular.com https://hermeticmodular.com/modules/alchemy-lab/echoa
- official
- delay
- reverb
- fx
- presets
Description
Echoa runs two stereo delay lines, four lines in total, each with its own time, feedback, mix, damping, diffusion and multitap settings. Delay times range from 1 ms to 16 s, so short settings give Karplus-Strong style comb resonance and high diffusion turns a line into a reverb tail. Each line can use a digital, BBD, tape or vinyl engine. The six CV inputs are assignable with per-input amounts, and the firmware has 16 preset slots, parameter locks of up to 16 seconds on every pot, and a colorblind-safe LED palette.
Install notes
Flash from the Hermetic Modular web programmer (hermeticmodular.com/program) over the front USB-C port in a Chromium-based browser. Presets saved on 1.3.0 read as empty on 1.4.0, and presets from 1.0.0 cannot be loaded by 1.1.0; updating through the web programmer backs up and migrates them.
Version history
| Version | Date | Notes |
|---|---|---|
| v1.4.0 | 2026-09-04 | Filtered pots, parameter locks that arm on first touch; new preset format, migrated by the web programmer. |
| v1.3.0 | 2026-08-21 | Interactive manual in the web programmer and a rebuilt clipping light. |
| v1.2.0 | 2026-08-14 | B2 + B3 jumps to the first page; parameter locks extended to 16 seconds. |
| v1.1.0 | 2026-07-17 | Colorblind-safe LED palette. |
| v1.0.0 | 2026-07-09 | Initial public release. |