Greetings - quick update on my earlier post - with about 20 hours on these Pioneers now, I can add a bit more descriptive inputs to the thread.
They do complex wave signals well (i.e., lots of instruments and voices) but they really come in to their own with simpler music, primarily comprised of voices and string instruments. To Die for through these cans are Chris Isaak's hidden gem Baja Sessions, practically any track, but in particular "Return To Me" - you can literally hear fingers slide over the guitar strings, and it's like you're standing in the middle of the recording session. VERY few headphones can render Isaak's lower octaves accurately, but these really bring him to life. Other recommends are Rhonda Vincent's Destination Life, Michael Buble's Christmas (recorded a bit hot, but lively with the harmony tags and upright bass on "Jingle Bells") plus anything from Chanticleer's Let It Snow tracks (best is "It Came Upon A Midnight Clear). As mentioned before, the airiness of the headphones make these cans killer for live or open studio cuts - alot of "outside the head" sounds get preserved in these Pioneers.
Bass is accurate, I wouldn't call it "thin" as it can get up for stronger recordings, but it's more about accuracy than bluster at the low end (unlike Dr. Dre's). I'm listening to see if it gets better/deeper after breakin, but no evidence yet.
Mids/vocals are where it shines (as per above). Highs are interesting - these walk the fine line between accuracy (clear but not engaging), sparkle (think live cymbals) and sizzle (bad, fatiguing). I'd characterize the Pioneers as somewhere between high accuracy and a bit of sparkle, hear everything up high, but not tiring, unless the recording is poor. No sizzle at all. For some perspective here, compare these Pioneers to their diametric opposite headphones, the closed Sony MDR-V6s, which to my ear fall squarely between sparkle and sizzle, and I just can't wear 'em for any length of time. And Pioneers are "smoothing out" as they break in, which I think makes an even better sound. Overall, I'm quite impressed with the ability of these headphones to render the human voice, both male and female.
Super comfortable - I've worn them for three hours, and forget I have them on. A bit like a Star Trek Transporter - put 'em on with a great cut, and all of a sudden you're in the middle of a performance somewhere else. Which also fits, since I totally look like a Martian with antennae when wearing these. My head is a 7 1/2, and these just stay on lightly when I'm sitting in the listening chair. Not for moving around, dedicated listening only...
Only drawbacks so far - (1) my JDS Labs cmoyBB v2.03 works great with these, but the 9v rechargeable battery only lasts about two days driving these puppies (vs. a week with any other headphone I've got). (2) Also, these are so NOT closed headphones - I can't wear 'em late night in bed as they wake up my wife! (3) I look like a martian wearing these, not necessarily a bad thing (apparently martians appreciate great sound).
Still, best $25 I've spent, like, EVER.
Edited by DozerCSX - 1/5/14 at 12:43pm