I am a ER4B manic and I only listen to er4b sometimes er4s when going out for portable use.
At home I own HD800, T1 and LCD2.
But I found HD800 sounds most like "er4B" in terms of clarity, treble extension, brightness
while T1 sounds like er4s in terms of warmness and natural .
Anyone has the same feeling?
My source is bifrost (mod with blackgate FK cap/ non-polarized Blackgate/ Jensen silver 1mm silver wire)
and my amp is DIY with (Blackgate)