@amirm Very interesting review and especially listening impressions. I wonder technically what is making the difference that you hear? Are there specific tracks that really stood out during your listening? Is it the openness of the earcup design or is it the treble response of the electrostatic drivers?
As my only experience with Electrostatic is the new Fiio FX15 "tribrid" IEM :
www.audiosciencereview.com
which I found had fantastic treble which made certain tracks really stand out and appear very spacious for an IEM but ultimately I had to eq the midrange to get a balanced sound.
As my only experience with Electrostatic is the new Fiio FX15 "tribrid" IEM :
![www.audiosciencereview.com](https://www.audiosciencereview.com/forum%20resources/Two-line%20ASR%20Logo-new.png)
FiiO FX15 - Measurements, Features and Opinions
FiiO kindly sent me pre-release versions of 2 of their new IEM’s, the FH11 https://www.fiio.com/fh11 (1 DD + 1BA drivers) and the FX15 https://www.fiio.com/fx15 (1 DD + 1BA + 4EST drivers). Of these the FH11 is a very bass heavy IEM at roughly $50 with, in my opinion, an odd tuning (I asked FiiO...
![www.audiosciencereview.com](https://www.audiosciencereview.com/forum%20resources/Two-line%20ASR%20Logo-new.png)