I have a Bel Canto C5i Integrated Amp / Pre Amp and an MC275 MKV along with Vienna acoustics Mozart Grands. The sound is beautiful, lots of head room and soundstage but I did notice that there is some distortion at specific male vocals. Not sure if this is my set up or if this is just what to expect from the MC275 Tube amps. Its been 3 years so curious to know if you ever bit the bullet.