SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

Have used these for gaming, on the plane, and in the studio and they work great in every aspect. The sound is clean and crisp and the mids are very distinct and clear

good

These are great. I upgraded my very old Audio-Technica ATH-M50X and the difference in sound quality is night and day.

I am audiophile at heart. I have the Astell & Kern SE 100 and was looking to upgrade my cans. I have found them. The 600S are awesome. The detail is simply stunning, 2.5mm balanced cable (purchased separate cable) or the supplied 3.5mm cable. Soundstage outstanding, every instrument in the orchestra stands out in exciting detail. The mids and highs are right on. The lows are well pronounced. I simply love them. Thank you Sennheiser.

My husband loved it! Definitely reached his expectation. Excellent audio profile headphone

these cans really open up after breaking them in for multiple listening sessions, but you really need a proper amplifier to give the headphones color and vibrancy in your mix/sessions. the phones sound like a dream, as all my favorite tunes give me a whole new perspective thru how warm and smooth lossless quality melodic bass music can reproduce in the cans.

These are my first Sennheiser headphones, I own Fostex, Grado, HiFiman.

Wonderful sound & comfort.

HD 660s compared to HD 820 that I also own it is one step below sound wise, but this is acceptable when priced at one fifth of the hd820.

Amazing product from Sennheiser. Please note that the drivers in this are based on the HD 700, but not taken directly from the HD700 which one can see if one can read the frequency response graph. Anyways, there are certain people saying that HD650 are superior and there is no reason to replace it with this, well, those opinions are really biased. Dont get me wrong, HD650 is a great pair of headphone, but you cant really compare it to this because they have quite different signatures because the HD650 is somewhat a little more colored as in it is adjusted so it produces good sounds, but not staying 100% real to the original recording. On the other hand, the HD 660S is the definition of clarity, the sound is clean, crisp and stays true to the original recordings across the board. In terms of bass if you are concerned, no, they are not blow-your-head-off bassy, they are clean and punchy. In other words, it is just the right amount of bass for any music if you dont think it is enough, you can always turn the bass up in the EQ or use dac/amp with bass boost feature. To sum it up, the general idea of this headphone is a combination of the clarity of the HD700/800 (not that different) with no roll-off highs and clean sound across the board. This is a worth-it investment. (I can wear this for the entire day. Comfort wise, the clamping force that people complain about do exist, but it is pretty much gone after a week of use)