Latik provides good advice. I have Balanced Audio Technology 3.5 Signature with diy mods, this transformer based conditioner, tried class A SS, push pull tubes, 845 and 300B SET, every amp has performed better straight into wall. In every case I've heard some loss of transients, less liveliness going into BPT, I'd also add this also with a myriad of power conditioners borrowed from lending library at the CableCompany. As for my dedicated feed for amps, 20 amp breaker, 10AWG cryo'd Romex, Oyaide R1 AC receptacle. I've also always run my subs on same dedicated feed.
