R6 volume low gain:
balanced Roland @ 40
3.5mm Roland @ 46, ier-m9 @ 52
Roland Mids. r fuller than M9, they sound closer to the way they were described for Fiio FH7 (Cannot do my own comparison yet because as of right now my hearing is mostly back and FH7 sounds insufferably bright. Later will try a little)
Mid bass to low mids range is very full bodied spacious “Room filling kind”, sounds very natural presenting in some songs feel of actual studio, I guess. Whether it’s possible, don't know, WorriorPoet may have an answer
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M9 has considerably less of it.
Treble is the most forgiving of any IEM including se846 & Sony ier-z1r (Sony is a lot brighter. That 100KHz capable 6mm super twitter has massive power advantage over Sonion E-stats.) ier-z1r FR I consider closest to perfection than anything I’ve heard. Miss it. Cannot wait for Sony to release something similar that fits my ears.
Roland even with 2 E-stats (as compared to EE Valkyrie that has only one) still sounds darker than LX and HF instruments and especially brass percussion pushed to the back of the stage often too far for comfort.
The treble on M9 and LX extends much better, there is no way around it. To be fair both M9 is reputed to have unusual treble extension by many audiophiles including, if I remember correctly Toranku, Steph from Major Hi-fi you tube reviews and I don’t disagree. LX also brings shimmering sounds much closer than most.
Roland feels to me like CL2 story all over again, but unlike CL2 it has no glaring flaws and forgiving enough for portable use.
Like CL2, Roland has very natural tonality from Low end through lower mids. The high mids and treble feels to me like that magic starting to fade. (I will revise it when I play with EQ to find out what is it that bothers me in upper mids and treble)