Just my two cents... quite a coincidence as of late here on agon that I have many of the gear mentioned on the forums. I have a tube integrated amp (Line Magnetic 216ia) and Magnepan MMGs and Vandersteen 2ce Sig II. I have the Vandys paired with the tube amp and it will drive them fine. Sounds great, smooth, warm, engaging and very musical (think Jazz, vocals and acoustic music). I don’t pair the (planar speakers) Magnepan with the tube amp, I think the speakers want to draw too much power. I have those speakers in a secondary system. I can tell you that the ARC gear you have will drive 2ce Sig IIs to glorious sounds, but then again, there are many good speakers out there. It’s an easy choice looking for Vandersteen because he (Richard Vandersteen) has created a great value combined with hi-fi sound in the 2 series for many years.