TwinACStacks
Headphoneus Supremus
I'm convinced you (and probably Chickenmoon) got bad issues as the ZST for the price is very sweet sounding and the better the source the better mine sound. After listening to mine on the Opus#1 for 3 hours they sounded like some $100 iem's I own. Both my Carbon's and Colorful's are well worth their price IMO:wink_face:
I Know for a fact Pod, that there is something wrong with my pair. You and. I have similar tastes in IEMs and I would probably have to take away your hammer...
TWIN