So I'm definitely a newcomer in the audio electronics realm but I've been really digging into circuits and experimenting with sounds. I've been focusing alot of time working through examples that use pairs of LM386N ICs for a distorted audio signal. In the circuit I've posted here I'm getting a loud squeal whenever I powerup the second LM386 in the chain. Could someone tell me what I have wrong that's causing this to happen and what I need to do to fix it? Thank you!
I don't know if anything else is wrong, but always bypass your power pins. And I mean always, on everything. In this case it means a 100nF cap between pins 6 and 4 of each chip, placed as close to the chip and with the shortest leads that are practical.
You should also have some bulk bypass -- I'd go with a 100uF electrolytic cap from +V to ground, just about anywhere on the board.