2 layers54.8 × 40 mm

Tiny Sound Source
13chuck13-ua/Tiny-Sound-Source
AVR ATtny as LPT DAC compatible with Covox Speech Thing and Disney Sound Source.
23 parts
KiCad boards from 1 GitHub repository tagged “covox”, the most starred first; open any of them in PCBKit.

13chuck13-ua/Tiny-Sound-Source
AVR ATtny as LPT DAC compatible with Covox Speech Thing and Disney Sound Source.