Hows ur q701 perform on the national? I am thinking get an q701 for national:D

but i already had the MDT which i think is a quiet good IEM, what i want is to see how it sounds like if i use amp 

how that serves MMDT? did u try that earbud? also , for iphone, it is better get an amp as well like fiio e17 or an amp like ur rsa, seems like iphone's dac is not better than normal mp3s. 

is an iphone have lineout? if yes, what kind of amp would u guys suggest if i need to use MMDT

i currently own an ipod touch, hm601 and miles davis tribute, but my hm601 is broken, and on the way back to factory. so, pls tell me i should get a portable amp for my ipod touch or get a new mp3 and replace the 601? i am now using iphone, my tribute does not show any advantage compare to se215.