I've heard of and installed many Profile components for people over the years. The key here is if you havent heard of it, stay away from it. Profile is an beginners piece, not very good sound quailty, and will probably give you noise in your system. I'm suprised to hear they are still around. If you are looking for a cheap four channel amplifier, Alpine makes a MRP-f240, that's a good buy and not much more than what you are looking at. Hope that helps....
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