i have tried hd668b, and hd669. i definitely think both cans are much better than sr60i

one problem though, this cans is pretty heavy and will not do very well with cmoy or other portable amp. if you think using portable amp is good, wait until you plug it to a desktop amp like zero dac/amp or cheap tube amp such as indeed/bravo amp..you will hear the true quality of superlux

oh, forgot to mention 1 more think. this cans improves greatly after recable

yes, the superlux amp has enormous power..but the sound quality is mediocre. better than e5 though..

sweet..it's just like comparing ferrarri to proton waja. lol

waja is good, but you know exactly what people will say when it's compared to a ferrarri..

This post has been edited by i_djoel2000: Dec 12 2010, 11:03 PM

i'm not trying to promote my product or anything like that, but indeed amp has more than enough power to drive HD668B & 669 (i have tried both with indeed amp)

if superlux headphones are not driven adequately, the bass will bloated and cut off. but if you can get sufficient power from the amp, the bass is actually pretty good. i even prefer HD668B + indeed amp to grado sr225i + indeed amp (yup, i have tried both)