Six bucket-brigade chips, two channels, and not a line of code in sight: Echo-1 is what happens when a classic analog delay is rebuilt for a stereo world.
Retrogradus Echo-1 is a true stereo, desktop BBD echo box with two independent analog delay paths that can also be summed to mono for extended maximum delay time. The entire audio path is fully analog from input to output, including the clock that drives the BBDs, so repeats have that unmistakable, organic smear and gentle high-frequency rolloff that plugins struggle to fake. A dedicated vibrato section with rate and depth controls lets you move seamlessly from subtle tape-like wobble to more pronounced pitch modulation, turning simple echoes into animated, warbling textures.
Designed as the smallest and most affordable Retrogradus instrument to date, Echo-1 measures roughly 6" by 4" by 2", but still uses high-quality components and carefully chosen circuit topologies to deliver the brand’s signature character. It accepts both 1/4" and Eurorack-friendly 3.5 mm connections, making it equally at home on a pedalboard, beside a synth, or at the edge of a modular rig. And because there is no tap tempo, MIDI, memory, or display inside, there is no firmware at all, just a focused, hands-on analog delay that stays exactly as you dial it in every time you power up.
