Not sure where to post this, but i notice this allot on few audiophile sites. Where everyone say's that anything with 2+ drivers are best, Yet the ER4S still beats allot of multi BA set up's. More so with some good EQ applied. I use my ER4XR yet with a EQ it sounds better than the SE425, W40, XBA-N1AP i had far back all multi driver.
Also to add i just saw at Reddit how few reviewers thought custom art's. New IEM's sounded like it had like 4+ drivers but then the company admitted it's a single BA set up.
Also to add i just saw at Reddit how few reviewers thought custom art's. New IEM's sounded like it had like 4+ drivers but then the company admitted it's a single BA set up.