Available as an assembled Module and as a DIY project.
This Module is currently available.
3HP Camelion DSP
The Camelion is built on the ATtiny85 and uses the TinyAudioBootloader.
The name “Paperface” comes from the classic Serge look with white panels.
The TinyAudioBootloader makes it possible to upload new firmware through the audio out port without a programmer just replaying a wavefile at startup.
The module is open-source and can be found here:
https://janostman.wordpress.com/the-3hp-paperface-euro-modules/