I'm running Mac MC501 monos with EPS2 and they mate very well. Bass is strong and controlled ; mids are full and sweet; highs are crystalline. The combo has coherency and musicality, and definitely presents a toe-tapping experience. The PBN/SEAS tweeters are remarkably clear and revealing but I've found they can be a little much in a hard room with amps that lean in that direction. The Macs, being full and smooth yet detailed, play to the strengths of the EPS2s very well. And the speakers, because they are so revealing of microdynamics and detail, help to augment the 501's slight softness in this area. I'm very pleased with the combo. And I'm surprised more Mac owners don't go for these PBNs. Wonderful speakers.