Eh, just to clarify on taping over IE8's bass dial:
1. It's just an option to alter IE8's sound, just like the bass dial on IE8
(min-max, partially blocked-completely blocked)
In no ways is this needed to enjoy IE8, similar to how you can enjoy IE8
without knowing there is a bass dial.
2. Depending on what tip you use (main factor alter IE8's sound after the
first 24hr burn-in)
blocking the bass dial can calm the mid-bass hump (only slightly so after
1000hr+) without affecting the sub-bass.
3. For IE8, light bass and no isolation can be achieved, but light bass and
high isolation is neigh impossible without EQing given that the better seal
or deeper insertion you have the more bass you hear.
Concurring with skeptic on taking even an musician's opinion on a headphone/IEM
with a grain of salt. The most authoritative people are the mastering engineer and
recording engineer of a particular record for they know what it's suppose to sound
and how it did sound, on rare instances neither can comment on a recording with
certainty because the sound was tampered with after it was mastered. IMO, on
masamune's case the cello he hears on stage will strongly influence what he
perceives as the right sound, except that what you hear in the audience is different
and what you hear on record is even more different (if only a minuscule amount), his
opinion is no different than the rest of us on how a cello is suppose to sound on a
certain recording. But one thing's for certain: IE8's reproduction of cellos is different
from how real cello sound on stage (along with the audiences)
(Apologies beforehand if I presumed stuffs)