- Mar 8, 2005
I was wondering which of the UM2/E4/ER4 improves the most with a dedicated amp. I currently have the UM2, and previously the E4, which I sold after extended comparison out of an Ipod Nano. However, I am going to be getting an M3 amp (w/ad843) soon, and I'm wondering whether I should consider selling the UM2 and getting something else again. I mainly preferred the UM2 because of its more headphone-like soundstage, but I felt the E4 was more natural in its presentation, but lacking in seperation/clarity in complicated passages comparitively. I am mainly interested in performance in the home listening environment at this point, as opposed to in a mobile environment.