Ashhong said:What kind of variables, if you dont mind me continuously asking? Because it sounds like the E7 DAC quality would be better than the E11 amp quality when using it on a computer or laptop, generally at least.
Battery and cable situation is not a problem, I don't think..
there is no way for anyone here who has not heard both side by side, to be able to tell you that the sound out of the amp, by itself, in the E11 is better than the combined amp and DAC found in the E7.
plus, the type of headphones you use and the volume you listen at will also make a difference. I might find that the E7 isnt great for, say, the D5000 but it might be fine for you if you use IEMs.
I would still recommend the E7 as a dac/amp combo for use with a laptop but I cant say how much better (or worse) it would be than the E11 (or another more powerful amp) being fed from the laptops headphone port.
edit: I see K.Jack has used both. thats a good post with useful info.