Val can't make a visit to Tokyo without me holding him down and stealing a little of his time
and glad I did.
Guess what I have in my ears at the moment? The Zn's lean more towards a neutralish signature in direct comparison to the M-100. The bass transition to mids feel more uniform and that trend continues to the trebles. The bass still hits hard, and the midrange and trebles are transparent and clear. I'm actually picking up some detail from the Zn that I don't hear in the M-100 - in fact I had to rewind my track a few times 'cos I thought there was something wrong with the demo Zn unit I had until I realised that it was actually in the track but wasn't picked up by the M-100.
But the M-100 & the Zn's have different signatures. I wouldn't weigh one being better than the other.
Aside form signature, these have a hefty weight in the hand but not in the ear. In the palm of my hand the Zns have a solid feel to it but surprisingly in the ears it doesn't feel heavy (I'm not using the ear hooks). However if I were to be running with them, I think the ear hooks would come in handy.
One of the best features of the Zn is the Kevlar cables....they really don't tangle! I'm kinda surprised why this isn't obvious to other makers especially for everyday IEMs where one could easily scrunch it up to put it into pockets and pull out to use without having to spend time untangling the cables.
It also comes with a 3 button volume/music control mic.