Youtube review: http://youtu.be/qa8MlViTHFI Photos: http://dalethorn.com/Photos/Panasonic_Zs40/Headphone_Angle_Curve_Carbon_Cans_01.jpg http://dalethorn.com/Photos/Audioforge/Angle_Curve_Cc.jpg Sources: iPhone6+ with v-moda Verza/Portaphile Micro/Decware Zen Head amps, various computers using HRT Microstreamer/FiiO E17k/Beyer A200p DAC/amps. Review notes: My first impressions of the sound of the Angle & Curve CarbonCans (ACCC) are based on direct comparisons to other headphones - the v-moda M100 and XS, the FAD Pandora VI and IV, the Beyerdynamic T1 and T90, the AKG K812 and K712, and notes that I've accumulated from many prior reviews. I'll describe how I relate to the ACCC (i.e. my personal tastes and how I use the headphone) only after covering all of the objective issues. When I first listened to the Angle & Curve CarbonCans (abbreviated ACCC here), I thought of the classic Beyerdynamic headphones - the DT100, DT150 etc. Those are very midrange-oriented, based on my last 2 years' experience with the warmer class of headphones such as the MrSpeakers Mad Dog, ATH ESW9a, B&O H6, B&W P5, Beyer DT770-32, Sennheiser Momentum, and so on. The ACCC is different - if you listen mostly to classical, jazz, acoustic, and other similar genres, you might be interested in this headphone. If your taste is more common - most popular music, EDM, urban etc., you're much less likely to appreciate the ACCC. I buy headphones that I'm curious about regardless of how they sound, but I do try to choose something that's likely to be inoffensive at the very least. When one of my purchases turns out to be far enough from my preferred signature, I'm not shy about using EQ to adjust the bass or treble etc. to get closer to what I like. For this review I'm not using EQ or tone controls of any kind, so when I state that the ACCC is very midrange-oriented, it's not like any other headphone I've used recently - perhaps a bit like some IEM's I've used - but not headphones, excepting the classic Beyers I noted above. I have to emphasize here that the ACCC sound isn't deficient (unless its signature doesn't match your needs) - it's actually something I can adjust to and enjoy immensely, with musical tone and detail that's free of the most common things that plague other headphones - muddy, boomy, inarticulate bass, crispy, peaky, harsh treble, and oddly-colored midranges. The ACCC is a very smooth performer. One important thing that affects bass strength with this headphone is the headband clamp - it's very light on my average-size head, so other users' experiences could be a little different. I gave the ACCC about 24 hours of continuous play at medium-loud listening levels for purposes of "burn-in". Some of the lower-cost headphones I've had change quite a bit during the burn-in process, but the ACCC sound has changed very little or none at all. Of course it's possible that headphones could be played at some length on a QC bench at the factory - it doesn't cost anyting except a little extra space and a series of headphone jacks to provide the sound. Isolation is less than what I've experienced with some of my closed on-ear headphones, but where I hang out most days about 100 yards from a busy freeway, the isolation is enough to keep the noise well below the music level. Leakage is low enough that the ACCC should be playable at moderate volumes in libraries, in quiet offices, and on public transport. The ACCC is average in weight for an on-ear headphone, which is to say it's pretty light. The clamping force is light as noted above, which means it gets comfortable very quickly and stays securely in place with activity that doesn't involve rapid head movements. This is an ideal portable headphone in the sense that it can be pulled off the head when not in use, and worn around the neck with no comfort issues. This is important to me because I like to go places without having to deal with a bag or case - just put the headphone around my neck and drive to work, then set the headphone down on the desk. The range of adjustment for different head sizes is nearly 2 inches on each side, where my average size head fits at 3/4 inch from the largest size. The cable is double-entry and non-detachable, but seems sturdy enough for average use if not abused. The cable has a mic on the left side, but no music player controls. The 3.5 mm straight plug has the extra conductor for the mic, like Apple-compatible cables. In previous reviews I've included the following music examples with comments about how the headphones sound with each track. My suggestion is instead of reading each one as an absolute unto itself, you could compare my notes here to those other reviews and see how the ACCC compares with each individual track.