Pause, I too am impress the Mac MC 275 can drive your EW Andra IIs.
I have EW Andra IIs and from my experience, the speaker is very current hungry. My room is 25 x 33 with 15 feet tray ceiling so probably a big factor.
I was driving them with a Krell FPB 600 and it was a great match. Only complaint was a little darkness in the sound. With the SF Power 3SE+, it was superior to the Krell in every way except for the bass and dynamics ... awesome midrange, bloom, decay ... Also tried EAR 890 and it was lifeless but the sound signature was excellent. I bet if I run them in mono or bi-amp configuration, it would be excellent ... just under power.
Sold my SF Power 3SE+ and going back to SS for personal reasons. Investigating SS with the Krell and SF Power 3SE+ best attributes.
