SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

I really liked the sound and would have kept these if they werent so horribly uncomfortable. Everything about the sound was great. These could have been an end game pair of cans based on sound. However, the comfort level was awful, within minutes I was getting a dull ache around my ears and 15 minutes in the discomfort was unbearable. I returned these and went with Focal Clear OGs.

I use these on my gaming pc. I have an audio out that i hooked up to a headphone amp and it works well. The sound I can hear in the game is amazing and helps with sit rep. Def worth the money

If you were like me and are trying to buy a nice pair of headphones to get a start in the audiophile scene or even just for quality music or gaming than this review may help your research. Below Ill list some quick pros and cons to consider and an overall summary to help with your decision.

UPDATE 10/11/2021: Pushing this up to five stars. I used to think this headset lacked some treble but this is because I came from a VERY bright and tinny headset. After listening to many songs across many genres of music and listening to non-headset audio systems I now know that this is a phenomenal product. Thank you, Sennheiser for showing me how amazing music can sound!

Cable is really long, but it doesn’t matter; fantastic headphones!!!!

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.

I have owned Sennheiser headphones since the 70s. My last set lasted 44 yrs.. my old HD 420SL were industry standard when new. These new cans blow them out of the water. The HD 660 are crystal clear and very neutral, very easy on the ear. I am hearing parts to songs that I did not with my old Hds.

I write and arrange music. These are amazing studio headphones - light and completely balanced throughout the audio frequency spectrum. Their response time for fast attack sounds is amazing - thanks to the open design.

Comfortable. I expected a bigger sound. Better for low ranges, but not enough mids and highs

This headphone tells you how you should hear the music.. I have other headphones like the HD 58x, dt 770 pro and m40x man there is no comparison the 660s are on another level for sure