Tunibg/tweeking Garbage

[petemoore]

Ive got some trash vs treasure transistor stuff, I found on the curb or was donated.
 1 stereo reciever that 'works' if a little scritchy in the knob dept.
 It would seem everything you need to amplify is there, [power supply output transistors etc.] but they generally sound well crappy.
 Is there a way to mod these units to be more usable for guitar amplification applications?
 The availability of these units is so good, I thought why not ask and see if there's anything can be done for them to make them more suitable.

[Paul Perry (Frostwave)]

If youy just want to know where to put the guitar signal in, just take a line out of a CD player or something at a 'guitar' level & then try poking in the signal (via a 0.1 mfd cap) until you hit the 'right' point. (you need the ground connected as well of course).
Then you can cut the radio part out.