Youtube review: http://youtu.be/bZyKn-JAG4I Sources: iPhone4; iPhone4 with Decware Zen Head or FiiO E12 amps using LOD; iPhone4 with v-moda Verza DAC/amp using USB, various computers using HRT MicroStreamer DAC/amp. First impression of the ADL H-118: Very recessed treble. It didn't turn out to be that simple actually, but in the final analysis the sound is quite good, albeit with a moderate recess in the 'presence' area (~2.5 to 5 khz). Note that my impressions of the sound, including analysis with test tones, is based on comparisons to my other headphones past and present. My standard for treble a couple years ago was the Sennheiser HD800, but I consider that to be slightly bright now, and most hi-fi experts seem to be converging on that opinion as well. Currently I find the v-moda M100 treble to be just about right, when the very strong M100 bass is reduced a little. I also think the Beyer DT770LE (not the regular edition DT770) treble is excellent, when its peak around 9 khz is reduced slightly. Using the above examples as a starting point, I find the H-118 treble to have a ~6 db emphasis around 6 khz and a ~4 db emphasis around 9 khz, but the overall treble without EQ is recessed enough that those emphases aren't particularly noticeable. When the treble is boosted they can become a problem, and so I settled on the following settings in Foobar2000: +1 at 1.8, +2 at 2.5, +3 at 3.5, +4 at 5, +4 at 7, +4 at 10, +3 at 14, and +2 db at 20 khz. The resulting sound is still slightly presence-shy, but if I use EQ at all I use a very smooth curve, since a more accurate correction is not only time-consuming, but tends to create large narrow peaks and dips in frequencies that are adjacent to any uneven EQ sliders. The H-118 bass has a faintly audible fundamental at 15 hz and a weak but clearly audible fundamental at 20 hz. The weight that accompanies these tones confirms the presence of the fundamental frequencies. From 30 hz on up through the mids the response is very smooth, and even though I don't hear any distinct emphasis in the bass with test tones and tone sweeps, listening to music I'm familiar with confirms that the low bass has better than average impact, while the upper bass can sound a little boomy on some material. I'm not a bass-centric person myself, preferring sound that's fairly close to neutral, yet I'm satisfied with the bass signature of the H-118 as being good for a wide variety of music. The midrange may sound less than detailed or clear to some users, but that impression would most likely be due to the recessed treble. My summary of the sound: Somewhat dark even with the slight treble boost, with a strong deeper bass that isn't bloated or excessively warm in the upper bass - i.e. very good for high fidelity music playback, but purists or perfectionists should not apply. The soundstage seems average to me - neither narrow nor wide - it varies far more in my experience with the music than with the headphones. Isolation seems average and leakage is very low - you could play the H-118 in a quiet office in a cubicle next to other cubicles, as long as you keep the volume to a decent but not overly loud level. The H-118 seems to be mainly plastic. The earpads and inner headband padding are soft and covered in a good quality pleather, although the headband clamp is fairly strong and the earcups are somewhat narrow. The earcups are a peculiar triangle shape, but fit my ears similarly to the Sennheiser Momentum's small earcups - partly around-ear and partly on-ear. Most ears should fit these earcups OK, but some large ears may not. The earcups are permanently angled backward by at least 15 degrees, and so the headband is way forward on my head when the earcups are situated correctly. The earcups have about 10 degrees of maximum lateral rotation, so they should accomodate most head shapes OK. The 10 foot long detachable cable is single-sided (left side), is thick enough to withstand moderate abuse, has a proprietary XLR-style attachment, and is terminated with a standard miniplug (with included screw-on 6.35 mm adapter). The H-118's impedance is 68 ohms, and seems to be just efficient enough for satisfactory use with Apple music players with most music tracks. However, if the tracks are low in volume or have very large dynamics, you could experience insufficient volume or clipping of loud passages and transients. My experience with iPods and iPhones suggests to me that the Apple portable music players do soft clipping in most cases (I haven't researched this), but either way you'll get cleaner sound on average with a decent amp that has greater power than an iPod or iPhone and other comparable players. In my listening I did get cleaner sound with several amps, but I didn't hear a dramatic difference in the bass, making it tighter or less boomy. It did get slightly better, but not by much. A stiff zippered carrycase is provided that offers good protection, but since the earcups don't fold flat, the case is fairly bulky. I think it's too big for most backpacks, and will take up significant room in airline carry-on bags, but it's still a little smaller than the Sennheiser Momentum carrycase, and much smaller than the Shure 1440 and 1840 carrycases. For the price I paid ($270 USD), I can recommend the H-118 as a good hi-fi headphone as long as you can accept the following: Limited or non-portability due to the peculiar fit, the 10-ft cable, and the relatively low efficiency; 'Presence' shyness and the need for EQ (for home hi-fi use); strong deep bass and a slight tendency for boominess in the upper bass; and a very snug partial around-ear fit with a strong clamping force; In other reviews I've done 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 other reviews and see how the H-118 compares with each individual track.