I would like to ask for your advice now on which tube amp should i buy as I heard from you guys that a tube amp would make the dt 990s work wonders. Thanks so much for helping me all the way! 

Yes, I like the power and bass, its so much clearer and has so much more energy than my old cans , but I don't really understand "soundstage". Maybe my audio files are of too low quality. Any suggestions on getting better quality audio so that I can use my new set of cans to their full...

how bout shure's se215?

I got dem DT 990 pros finally, thanks so much for the advice! 

As stated in the title, I would like to purchase an IEM for under 100. I have had a few sub 50 ones in the past such as JVC's XX, souls( when I did no research and bought them because the shop owner told me so), UE ..... The problem about them is that they are   broken in a short period of time...

fiio e7 posted on the website is 16- 150 ohms. maybe u are mistaken

thanks for the suggestion guys, I just bought the e10 and it did improve the SQ of my cans : hd439. It gave a lot more power to my cans. I can't really describe it but I can feel the music a lot better. THanks for the suggestion!

and btw, how does the m50s/m50 or grado 80i compare with the DT 990 pros? they are a lot cheaper and do not require an amp, what do you guys think about that? 

the guy at the shop said e10 and e11 can only power cans under 100 ohms. Is that true? and do I HAVE  to have a desktop amp to power the dt 990 pros?

Yo thanks but how bout the fiio e7? would a DAC be of any help to increasing SQ and does it have enough power to power the dt 990 pros? 

hey guys what amp would you guys suggest to go with a DT 990 pro which is under 100? I think Imma choose that headphone but I heard it needs an amp

Sorry for going off topic a bit, but what would you guys suggest for a headphone under $50 ? I would like to give that as a birthday gift for my friend.

not really logitech. UE 6000 is made my Ue, which is an audio company bought by logitech in 2008.

No I am not able to try out the headphones yet. And btw, if I get a chance to do so, what is a good track for trying out what are the pros and cons of the headphones?  thanks very much

Hey guys I found that the new Logitech UE 6000 got many positive reviews, any ideas about that headphone? I think it is also under $200, and innerfidelity on youtube said it sounded better than the AKG k550 .!