I've been faithfully listening to these for the last 6 months, and the harshness I'd say is 95% gone/improved since when I first had them, initially you will find considerable improvemnet with the harshness, and then they will gradually improve over the longer haul/listening experience, I went with a copper/gold plated lod and innerconnect to hook my rig up, which helped down play the high end of the EX600 sound, and it helped imensley, I use an iPod Classic 7th gen with the eq set to hip hop which helped> c/g plated lod>GS Voyager w/contour switch off>c/g p innerconnect>ZOv1 used to enhance the bass as opposed to the GS Vs countour switch which only added to the harsh and sibilant treble issue> EX600s that have Head-Directs large bi-flange tips awesome tips at that! and to date they are the most awesome sounding IEM that I've ever heard, not that that says alot as my experience is only with TF10s that were traded for the 600s, RE262s which made me want to trade the TF10s for anything, thanks Majin, and sold the 262s after getting and hearing the 600s! and since the harshness is almost completely gone on the 600s I can now run all silver lod and innerconncet, which emphasizes the top end of the sound without adding to any harshness or sibilance ? hhmmm go figure!
and as of recent I just bought ericp10s 7550s! which give me the mids that I have been wanting some more of as of recent, I can thank the 262s for that, cuz there mids are warm sweet and enveloping, but too light in th bass dept, and thats when I found the 600s to having the best of both the TF10s and the 262s, with awesome bass and some of the treble of the TF10s but without any muddiness, and with mids that are closer to the 262s, wrapped into one! how did the Zen master order his hotdog, why he had ONE with everyting, lol, now I am giving the 7550s a listen, and they are nice very very nice, none of the harshness, with more bass, thicker mids, and a slightly smaller sound stage than the 600s, vocals seem a bit more forward, still finding out how to set them up to sounding the best, but I am liking them alot, a different beast then the 600s, almost completely different sound signiture than the 600s, with some similarities of the Sonys EX series, they are very rich and thick sounding, I thought I might keep one or the other, but I might have to keep both and switch back and forth to enjoy what they both have to offer! but I got to thinking that I might just try and hook up one of each at the same time ?
, and see what effects a mad scientists expierement will have, if I don't post in a while, well them my head probably exploded and have died with a smile on my face, lol, happy listening yall!