[ej8989]

I bought and built a stereo audio amplifier kit (80w per channel) and checked if everything's connected properly on the PCB. Everything is working so far (lows, highs) except that I can't hear any voices (mids) no matter what speakers I connect the amp to. I'm running out of ideas. Help?

 

[MisterX]

Double check that you do not have the signal and ground inputs mis-wired.

 

[ej8989]

Turned out to be an RCA jack malfunction.