DOA2520 it is everyone's favorite and popular option Op-pam from old AP2520.
We took as a basis this version of AP2520 and created our version. With modern transistors (BC550C and BC560C).
Our target was to make the Assembly more simple and convenient for any level DIY lovers.
This option DOA is a high quality sound.
We are confident that this option will help you create a quality sound at a low cost kit

Assembly Manual download>>>