this matches exactly how i feel ED16. extended lows, boosted sub-bass, mids forwarder than other kz, good separation, but highs.. "Some cymbals or hi hats sounds rather off" and some sounds and vocals show "annoying sibilance"; i thought this exactly.
in order to try to change highs/resonances, before trying eq, i've pushed the starline tips all way long, leaving only 2mm from the nozzle mesh to the top of the tip. but ED16's nozzles are not long, and the result is very shallow in my ears: so i've put some foam into the starline silicon tips (DIY symbios), to provide a shallow but tight plug. highs have been improved, but still testing them this way to check if it is enough.
ED16 has low impedance (<8ohms) and 2 BAs. i've not measured their impedance curve yet, nor sensitivity, but guess low output impedance sources (<1ohm), with decent current capabilities, will be recommendable.
