No sound from 05 infinity stereo

[bauch]

Turned my 05 infinity stereo on the other day and had no sound at all. I checked the fuses and found nothing,assumed the stereo just needed replaced and replaced it with oem I bought online.still no sound. I read about it and found out about the amp behind the glove box and checked that fuse it was also good. I bought the oem amp online,replaced and still no sound.What up?