Would something like a AKG 553 pro be considered sensitive because i run those sometimes through my a-100 and i started to hear a Hiss from them a while after a got the amp that didn't happen when i got it so i'm wondering if my amp broke or my headphone i don't hear any hiss through my planars...

so about 4 days thats a long time, but i have looked at there specs and what comes with and its DEFINITELY on the table if i find nothing that even compares to them by looking at reviews and products in my price range i picking these up as soon as i have the money 

how long is this burn in period. Over night?

I'm looking for some on the road IEMs. I don't work out and just want something to plug into a phone while waiting at a bus stop or in the car. here are some requirements i need, MUST be under 175 but under 150 is preferable  MUST NOT have a really booming mass like beats (i list ion to some...

if the nonremovable cable breaks will i still be able to do this mod 

after trying to read that and probably reading it way to fast for my out of school lets blow stuff up brain to understand most of it i rather just test em my self after doing the 1/8 rule as said of that link because knowing this laptop im on it probably has high output...

ummm quick question whats high output impedance 

i was planing on getting a fiio e10 or e10k 

i was planing to get this cheap dac / amp combo i found on amazon witch i heard was pretty good  to test if it would have any  improvements im going to buy it used tho and only plug my headphones in for and hour or two with out the dac / amp then an hour or 2 with it listening to music and...

 ok thx for the info as i said im new to this and only know basic stuff 

ok thx u two what im going to do is 1 wait for the 553s and see if i love em if i do ill get something cheap i dont like going to high volumes but because umm u cant have a dac with out a amp and im in it for the better quality so ill take the risk if i can find something on the cheap if i cant...

i just got a pair of AKG 553 pros on massdrop and i was wondering if getting a dac  / amp like a Fiio Olympus E10 be worth it im really new to the headphone business ive been using some rocks a person called gaming headphones that are SUPER heavy for the last year and tight on cash because im...