Below is the for one channel (Right). Left channel is identical.
Although the original Sanyo/Panasonic production has been discontinued, the STK411-210E remains available through specialized electronic component distributors like Veswin Electronics , Jotrin Electronics , and Alibaba for restoration and repair purposes. STK411-210E SANYO ZIP-22 Transistors - Veswin Electronics stk411-210e circuit diagram
(explaining the function of all 22 pins). Below is the for one channel (Right)
Electrolytic and ceramic caps on power rails to filter noise. Input Coupling: stk411-210e circuit diagram