Dual stereo delay with reverb control

Echoa is a stereo dual delay and reverb processor running on the open
Alchemy Lab platform. Four delay
lines — two per stereo channel — morph from clean digital delay into smeared, textured
reverb from first principles: diffusion sweeps a four-stage all-pass network from
discrete repeats to a wash, bloom grows short loops into long modulated plate and
hall tails, and bipolar damping darkens or brightens the tail.

Delay time runs 1 ms to 16 s with up to four taps per line and feedback up to and past
unity. The four lines route in series, parallel, isolated mono, or
spectral with a tunable crossover (100 Hz – 8 kHz). Four character engines —
digital, BBD, tape, vinyl — add anything from a gentle touch of color to destruction.
Every pot records a looping parameter-lock modulation; 16 preset slots snapshot every
parameter, routing choice, CV map, and lock loop. Sync via tap tempo or external
24 PPQN clock.

The hardware is field-programmable down to the silicon: six CV jacks configurable as
in or out, front-facing USB-C for MIDI, micro SD, and an
open source SDK. Load Spagyros or any other
Alchemy Lab firmware on the same module.

Product page ·
Interactive manual

https://hermeticmodular.com/modules/alchemy-lab/echoa

• 199 mA +12V
• 20 mA -12V
• 0 mA 5V
• 20 mm Depth

This Module is currently available.