For cycling, dancing, raving, or
any activity -- or chores! -- where you need tunes that get you to move -- motivated -- the SM3 ain't gonna cut it. Not by far. I've been criticized by many in this thread for buying (and then dissing) these cans ...guilty! But, your honor, I was partially (but perhaps not deliberately) misled: so many reviews (both here and on other sites) point to "speed" and dynamics as one of the SM3's strong points. In fact, my Teclast R8 (came free with T51 DAP) are better when you need pace, tempo, dynamics. Better yet, get a pair of USED (but not abused) IE8s.
Used because they need 100s of hours of break/burn-in time (for Chrissake, this is Sennheiser! They know about cans as much as anyone. ++). I think
this is where most "reviewers" of IE8s (probably others, too) completely miss the boat. Yes, I'm pointing to all those who review dozens (even 100s) of IEMs,
en masse, like popcorn**.
SM3's may not be all that detailed, either. The IE8's acoustic images are smaller (not as bright) but much more focused IMO -- note: I'm
not referring to
soundstage here; rather, the images of individual sound-producers (instruments, cars, birds, dogs, human voice) within the larger dimension of the 'stage. They SM3s image, especially treble, is grainer and (
undelicately) bigger. This may be what
you want. In astronomy and other micro-/macro-optics, a researcher may deliberately unfocus an image to make it bigger (and more visible -- to see hues better). (Astronomy example here: Step 5:
Star-test, out-of-focus ) . In the acoustic universe, I think this is roughly what the SM3s do. With the IE8s, one can use a good headphone amp (I DIY'd my own as the commercial jobs are never as good as DIY for the $) and pump up the gain a bit. Bingo: you get detail
and delicacy.
Now that they've been burning in
continuously for 4 days, using the XLO CD burn-in tracks ... Another few strikes (against the
IMO over-rated SM3, v2's or not) I've come to notice are: grainy un-/under-refined treble and "compression" of macro-dynamics. I'm not gonna point out the positives of these cans -- too much of that goin' 'round.
++ Okay, I may be guilty of using an
argument-from-authority logical fallacy here. But Sennheiser is one of the few companies that I respect almost implicitly.
** Case-in-point:
http://www.head-fi.org/forum/thread/554427/fs-sm3-w4-se535-mtpc-shipping-worldwide-prices-dropped
i2ehan ... love your posts and contributions and insights, man, but like those evil school teachers of our yesteryears, gonna call to up to the front of the class and set an example...
You note:
Monster Turbine Pro Copper: They were used for maybe 10 minutes, just to see how they compared to the Miles Davis. They're practically still brand new [...]
One can't really get best (= realistic) performance out of most NEW transducers -- especially dynamic/MC and BA; electrostatic, not as much an issue -- after 10 friggin' minutes! All that said, I like your review thread and wish it wasn't locked (again!).