specs

Mono in, stereo out. Nine lights, no screen.

the brain

Electrosmith Daisy Seed: an STM32H750 Arm Cortex-M7 at 480 MHz, with 64 MB of SDRAM for delay lines and reverb tails.Every sound runs in 32-bit floating point.

audio

48 kHz, processed in blocks of 32 samples (0.667 ms each).Mono in, stereo out. Relay bypass.

sounds

ten shown from the start, in five families: delay: tape, bucket; reverb: superlative, sparkle; pitch: olympus mons, marooned; modulation: phaser, chorus; drive: shaper, fuzz.Three play at once, one into the next. Each keeps two states of all nine of its controls.

controls

Three push-button encoders, X, Y and Z. Two footswitches, MORPH and WARP.Nine RGB lights under milky domes, in a 3 × 3 grid. No screen.

jacks

Top: IN, 9 V, OUT L, OUT R. Right side: EXPR and USB-C.EXPR takes a TRS expression pedal (wiper on the tip) and drives the morph. USB-C connects the editor and carries firmware updates; it doesn't power the stone.

power

9 V DC, centre negative, on the standard 5.5 × 2.1 mm pedal plug. 250 mA.Use an isolated supply.

presets

81 slots, in nine banks of nine, each with a name of up to 14 characters.Saved on the stone; the editor can export the whole library to a file and bring it back.

the body

Printed, wet sanded by hand from 400 to 600 grit, and polished with beeswax. No paint.Each one is finished by hand, so no two are quite alike.

the editor

moonstone, free, for macOS and Windows.Shows the stone's own lights, names every control, keeps presets and updates the firmware over USB. Download it.