headphone amp upgrade?
For several years, I've been using a Fiio E5 headphone amp following my
AGPtEK A02 8GB MP3 Player. Although I have been impressed with the
volume & bass boost it added to the MP3 player, I'm wondering if it's
possible to upgrade the amp to something with more output in the same
cost range?
Recommendations would be welcome.
Thank you!
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