Usually in this case it stands for sound quality.

@shadowgeist
Read this and you should know the name for all of the said headphones.. [Hint: From left to right => 1 to 9]

p/s: I'm no sifu, so I dunno what headphone to suggest..

Maybe you can consider this. Note that I don't know the seller and I don't know how well it sounds with your preferred genre. I just know that the headphone is pretty good for me.

Slightly above RM50; the Superlux HD381 series. I guess by earfonia's preferences, it's at audiophile level.

Superlux HD381 Series - Mini Review & Comparisons

On the contrary, he knows better about those he sells than other products.

Definitely value for money and only 3 reported deaths at the fans club. (But I never counted 3 out of what. )

If you're usually careful with your stuffs, then why not. But if you're within the normal where people sometimes accidentally pulled their IEM off their ears or player cuz the cable got stuck to something, or like me who put my laptop on my lap and sometimes 'kicked' the cable and off the jack goes from my laptop and so on, better beware.

p/s: A secret to avoid dead IEM: Do not pull on the cord to remove it from the jack or the ear. That applies to other cable with jack etc stuffs too.

This review mentioned some anime songs. Though I'm guessing that 381F would've a wider genre bandwidth than the other 2.

ClieOS' answer, quoted from head-fi

Unless you've external GCs, I don't see any problem.