In other word to say, they are badly tolerate to the bad sources am I right?
Despite having only two drivers can they reach the sound range, both bass and treble similar to SM3 or W4?
I'm keen to listen to any Heir's product yet they are less popular in my country.. Therefore I could hardly find any chance to audit any of them..
See if you can audition the Etymotic ER4, they are very similar. The Tzar 350 has better bass extension and is slightly more detailed.