I absolutely love my class D monoblocks. They put 500w into my 4 Ohm speakers and have no trouble moving the 12" woofers. They sound very clean, neutral and detailed. Mine are the ICEpower asp 500 boards. If I were searching now, I'd do some reading in the class D thread. There are many amps discussed that are class D and use newer modules. You could easily get a pair of decent monos for $3000 new, under $2000 used.