Just got these in, and it's taking time for me to adjust from my usual basshead iem use. I've tried all the recommended combinations, and find the treble is pretty sharp and sibilant... that is, at medium-high to high volumes. At low to medium volumes, it sounds pretty good, with the mids very forward.
I'm sure the main probelm is because I keep trying to go from medium-high to high volumes to see how much bass I can get, but first, it's too sharp and sibilant up there, as well as the bass is too loose and muddy. Anyways, I know these aren't supposed to be basshead, but just wanted to give it a shot. The bass does hit pretty clean and hard at low to medium volumes though. Overall, I think the loudest I can go with these is medium volume, compared to other iems I own which I can crank up quite a bit more and still sound pleasant.
I've been playing with earbud foam and stuffing it into the green nozzle, but haven't got to taming the treble enough to not hamper with the mids. Also tried to stuff the foam (from output hole side) into the gold filter, which slightly helped with the treble, but also slightly affected the mids. Might have to play with it more. Also, I could always EQ the treble down, which works, but I don't really like messing with the EQ.
I just need more time with these, and listen to more various tracks.