I am currently using the ATH M50 headphones, and while I like them, there are some regards they lack that I am hoping an AMP or DAC could improve. Or possibly an upgrade for less than $200 even, but I would have to wait a lot longer to be able to get that.
I like the clarity in the ATH M50, and the amount of bass is pretty close to what I want, though the sub-bass can be lacking in some songs. What I am really worried about is that the lower mids seem pretty lacking, making music such as classical music that has lows but not very powerful bass not kick in with the slight bass feeling and impact like cheaper headphones can. The headphones sound good but they don't really have a "full" and impactful sound especially around the mids. I'm hoping there is an AMP or DAC under $100 than can make these sound fuller, mostly with the mids.
Note, I haven't really had burn in with these. Does the sound get fuller and mids a bit stronger with burn in? I'm hesitant to upgrade headphones because these are already revealing enough of the low quality music I listen to most.