I have a ARC VT-50 driving ProAc 1SC's. My source is a Wadia 860x run directly in to the VT-50 (balanced). For me this combo is magical. The VT-50 is absolutley awesome but doesn't seem to get the press that its big brothers do (VT-100/200) After trying several Amps from McCormack - Levinson I have found the perfect match for the 1SC's. I have also heard the VT-100 and in my opinion the VT-50 has the same qualities, but half the power. Due to my small dedicated listening room the VT-50 was the most logical choice. I have heard that ProAc actually voices their speakers to ARC amplifiers. Unfortunitely, I have not heard the Classic 30 but highly recommend the VT-50. Good luck!
