SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

I have never been a big fan of headphones. When I first use them for listening to music they seem to sound good at first but after about 15 or so minutes the sound seems shrill and I get a headache. Mostly I use headphones for tracking sessions in my recording studio and listen to music for pleasure over my speakers. The HD 660s arrived yesterday. My past experience with so called Audiophile headphones has found them to be only marginally better than inexpensive ones. To give them the best test platform I could I tested them with my Pono player, listening to the 24bit FLAC remaster of American Beauty by the Grateful Dead. I hit play and Box Of Rain started. WOH, dude! I was flooded. I have had the MFSL vinyl version of AB since it came out so I am used to audiophile quality pressings of this album but I have never heard it like through these headphones. The clarity and definition is truly staggering. I jumped ahead to the vocally intensive Attics Of My Life. It was so clear I could hear the singers breathing and and for the first time could recognize the voice of each singer in the harmonies. After that I listened to Portugal, The Man, Dark Side of the Moon, Pet Sounds, Revolver and Hippopotamus, the new Sparks album. Every one was amazing through these headphones. After listening to all that I realized that after several hours listening I hadnt developed the noise hangover every other set of headphones has given me for the last 50 years. I decided to give them a real test. Everyone knows that you dont mix studio tracks in headphones but I decided to give it a try. Every instrument and voice sounded clear and distinct as I mixed them into a master recording. In the past Ive gotten mixes with headphones that sounded great in the headphones but not so much anyplace else. This mix I put on a thumb drive to test in my favorite listening environment, my car. It was perfect which means that what I heard in the headphones was accurate and uncolored. I didnt think that level of accuracy was possible with headphones. I am completely impressed all around. While to some they may seem a bit pricey, they are so good that in fact they are a bargain for what you get. You may never be able to listen through other headphones ever again. Most highly recommended!

This review is for the second gen or 2019 version of the HD 660 S

Just received and left speaker blown out of box.

I has many others chose this headphone over the lower number Sennheiser HD I also feel the detail and full accurate sound warrant the extra cost I find them very comfortable to wear for long listening sessions I just wish they did come with a pentacon to 2.5 mm adapter as my portable dap does not support the pentacon at this time.

Tuve los Sennheiser 650 y la vdd no me acomodaron; sin embargo éstos son una maravilla. Los uso con un FiiO M9 y puedes escuchar todos los detalles de la música. Los uso para escuchar rock, heavy metal y música clásica. Los recomiendo ampliamente para todos los melómanos.

Son mis primeros audifonos the alta definición. Sin embargo investigue exahustivamente y pregunte a expertos en el tema, todos me recomendaban en comun estos asombrosos auriculares.

These are the best Audiophile headphones below 40k in india. The best a hi-fi enthusiast can buy and still save some money for buying either a good headphone amplifier or a Digital audio player (DAP). I use the FiiO M11 Pro DAP which has the THX AAA-78*2 amp. This is the THX amp for music. This DAP and headphone combination is a match made in heaven. These headphones have clean bass, which is punchy without any unnecessary rumble or boom. The mids and vocals are clear and with a lot of body or weight. Imaging on these is just out of this world.

Im honestly shocked I grabbed these beasts on sale. 10/10 audio, just make sure to EQ cause by default it lacks lows.

After only a handful of songs, I was in tears. Song I had heard hundreds of times, sounded brand new. Decades of being color blind for using cheap Bluetooth headphone, and “gaming headsets”. Now I can see the rainbow of sound that actually exists.

Truly sensational sound, just as you would imagine with this pro/luxe brand. Sennheiser is well known for cutting edge sound- be it music or the spoken word.