RF fanatics/experts...come in

[headbussaboi 10+ year member]

What do you think of these amps? How do they stack up to yesterday and today's amps? I have only used, from RF, the older DSM, IX and x2/x4 series. Just wondering if these are just as good?

http://www.crutchfield.com/App/Product/Item/Main.aspx?i=575700X&tp=115&tab=features_and_specs

http://www.crutchfield.com/S-VIQwfH1l1fb/App/Product/Item/Main.aspx?i=575G18002

http://www.crutchfield.com/App/Product/Item/Main.aspx?o=m&g=120&i=575750X&c=3&tp=115&tab=features_and_specs

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