I am running with 3 P.G amps in my car, and I absolutely love them. Excellent quality, very durable, and they can push a lot of juice. I have last year's XS line (two XS 2300's and an XS 2500). They don't make them anymore, tehy were replaced with the Tantrum. Basically the same amps, just a little fancier looking, and more power options available.
