SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

so after owning for the first week or so I thought these headphones were good not great, my DT1990 PROS were great.i decided to do a couple upgrades to the HD660S new high end 1.2m cable and replaced the earpads with a set of sheepskin nu fantasia earpads for HD650 about a $125.00 investment, but well worth it these headphones now sit right beside my DT1990 PROS and sound great .these 2 items changed the sound of these cans dramatically for the better.not sure if the original cable was faulty or if the pads make all the difference, but I was gonna change the cable regardless .I do wish sennheiser wouldve thrown in a shorter 1.2m cable also, seeing the cost of these cans.

Great sounding headphones!

Llevo dos semanas con ellos y cada día como que suenan mejores, me han encantado.

I like this brand. Good quality

Excellent sound overall

good earphone

I realize there are many high end headsets…. And I’m not an audio specialist, but oh my these are amazing. Lows with depth and resonance, crystal highs, clear mid tones…. Use it with a DAC and rediscover your love for music.

Excellent sound quality

Boy do I love these…

Wonderful headphones. Music is crisp, clear and awesome according to my family of headphone addicted music lovers. On the downside as the person sitting beside them, it does not insulate the sound well.