Love my B&K 200.1 monoblocks. I'm running with the B&K ref 5 preamp with Legacy Focus 20/20 speakers. There's more to the system , but I'm no longer listening to the system. The true weak link now is the recording itself & how it was micro-phoned. Time now is spent enjoying music.BTW, Krell KAV300 CD player, Denon DP72L Turntable w/Shure V5 micro ridge, Tara Labs Balanced interconnects between pre-amp & amps, Heavy gauge Signal wire, bi-wired at speaker terminals & Audioquest interconnects.