Wow, what a positive surprise by Etymotic. In the past, I have forced myself several times to like the ER4 but it simply never worked out. As a result, I ignored the Etymotic brand for a while comforting myself “it is simply not for you.”
Those days are gone now. I have finally become a fan! A little bit more bass is all it took for the ER4 family to make the important step to jump from neutral to natural sounding and follow the contemporary trend. For a universal daily-driver IEM, I would wish there were a solution to better avoid microphonics of the cable and to play louder from an average source. Nonetheless, build quality is superb and the sonic performance is great. This is an easy recommendation for any aspiring audiophile.