I got something else to play with instead that turned out well. If an amp is good it should actually improve the line out from a DAP into a more demanding load. Basically, the added control and dynamics are a greater positive if the amp is clean enough to not cause other issues. E11 is not one of those, for me either. Line out will vary. Things like the DX100 ot Studio would be hard to improve from their HP out but most DAPs can be with the right amp.
Edited by goodvibes - 1/5/13 at 8:10am