I installed a Sony GT57UPW CD Receiver in my wifes 2004 Grand Prix this weekend. I purchaced the GMOS-01 Harness for it. The sound is horrible from this Deck. Much worse than the stock deck. This car does not have the Monsoon system with the external amp. Is it the Deck that sounds bad or do you think it could be something else? It has what sounds like a static sound with very little base. It is worse at low audio levels. The car has stock speakers in the front and Alpine 2 way 6 X 9's in the back.
From what I've been reading online it sounds like a lot of people don't care for Sony car audio products. Should I try a different brand? I personally always bought Pioneer. I've always like the sound.