Or you could just buy a power amp like the Rogue Audio Medusa that couples a high-quality tube input stage to a Hypex output stage and get great smooth musical sound with low noise and high power while not having another box and more cables to deal with... The Medusa replaced the Wyred 4 Sound STI-500 in my system. I'm listening to it right now as I write this (Hugh Laurie's 2nd jazz album) and it's better than fantastic. Happy Holidays!