First of all, do these guys even need an amp? My computer is pretty bad, and my iPod is an old one, so I'd like to think that my Sony's are not being used to their full potential.  I'm no pro, but I really enjoy quality sound in my music (I close my eyes and truly listen).  I know the MDR-7506's are not the best cans out there, but they are certainly better than any of my previous cans. Money is limited, so upgrading my headphones right now is not an option. 
 
 
I'm wondering:
 
1. Would a Fiio E7 be perfect for PC (laptop) and portable (iPod) listening? And does the E10 also allow for PC AND iPod enhancement? Why can't I tell the difference between these two?
2. Are there other, cheaper/better options than the E7 (~$90 USD on Amazon)? Perhaps a model that complements the Sony's better than a Fiio?
 
 
Thanks in advance,
Wallace

I am not familiar with your headphones, so perhaps some more experienced members can help.
 
The Fiio E10 that you are looking at has no battery, so is not portable. Also, it does not have a line in, so you cannot use it with an iPod. The E10 is better than the E7, if you are not looking for portability.

Quote:

darkblade48 said:

 
The Fiio E10 that you are looking at has no battery, so is not portable.

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Thanks!
Looks like I'll be going with the E7

You may want to consider the E11 as well, if you don't need the DAC function of the E17.
 
Of course, you could also consider saving a bit more and going for the E17.