Maybe is a tough question, sorry but it is a hard decission to make either. I happily have a pair of Watt & Puppy 8 with Electrocompaniet mono amps "nemo" and a Tag Mc laren 192 audio video as preamp. I am sure I want to buy an audio research reference 3 as my new preamp but I have serious doubts about the amps. This is between new krell 600 evo and Boulder 1050 amps. The price is similar, more expensive boulder amps but I want the best of them. I know it would be really dificult to find anyone that have listen to both but I have to try. Thank u all just fot reading my post, I appreciate it.