zeptocore is a handmade handheld sample smasher. more information at zeptocore.com specs: stereo playback of 16-bit audio files @ 44.1 kHz sampling rate sd-card storage for up to 32 gigabytes of samples recalls up to 256 audio files (16 banks of 16 tracks) 16 different effects (saturate, fuzz, delay, reverb, etc…) single-cycle wavetable synthesizer realtime sequencer with optional quantization optional clock sync out midi (in+out) over USB built-in 8-ohm speaker powered by two AAA batteries or USB-C open-source goals: open-source matters. you should be able to change this device today or years from now. learning is not curved, though learning is rewarded. the device should be fun without reading a manual, but reading the manual only adds to the fun. time is yours. by default, the device should not enforce “quantization” and leave it to the user to make their own timings.