Do you think my HD598's would benefit from a Fiio E6 or E7 amps if I'm using an iphone or ipod? because I think I need a little bit more volume. I find it it could use some more volume but without distortion. What do you think?

same here man I returned mine as well. Like you said they put too much pressure on my head. It was uncomfortable after about 40 minutes. The sound quality is pretty good but not enough volume for me. Compared to the ATHM50 they had less bass. I expected the more mids but with the same bass as...

Hey man now that you mentioned the Fiio E7 is practical for the Senn HD 598, would the Fiio E6 give some advantage to my HD 598 using an iphone or ipod classic?  

So Would you say that these Audio Technica ATH ESW9A are like some sennheiser's HD 598 except in close back version?