I've got a completely stock system currently in my MKIV. My girlfriend has a US AMP that was blown and I repaired it. Is it worth installing? I've never heard of US amps, but then again I'm not a big audio guy.
I am getting a 5-channel US amp installed in my car... The guy at my car audio store says they're the best amps in the world right now! But he's also trying to sell them.... I asked about them and people told me that they were extremely good amps, I will see how they sound when I get it in my car tomorrow