SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

The padding, the scent, the sound, the comfort. These boys are definitely worth it. Keep em on for hours upon hours of mixing seshs or maybe put on your favorite vinyl and experience them flat as the Netherlands. Life is good in these cans.

Best headphones Ive ever tried on. Paired with a Schitt stack.

A lot of people tend to criticize these headphones or even compare them to the 650 but IMO there is no comparison. I was actually pleasantly surprised. I love Sennheisers studio headphones but all the negativity behind these made me reluctant. Well dont be, these cans are absolute awesome and so easy to EQ as per your tastes.

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.

A big disappointment if youre coming from the Yamaha MPH-MT8.

I had an HD600 but the band is so loose it slides off my head. This one is so tight it may require a little streatching. What kills me is this design came out about 20 years ago. They couldnt throw in some lithium batteries on the top of the headband and use Wifi 6e or BT 5.1 and make a wireless version?

Great sound reproduction! Used for digital piano. Fabulous sound and soundstage. Comfortable.

Gran calidad de audio, no hay nada como escucharlos ya que muchas reseñas no hablan tan bien comparados con los HD600, para mi gusto una gran opción pero sí son algo caros y un lujo muy costoso, después de un año de la compra estoy muy satisfecho.

There are two different models of 660s. The earliest sound the worst because ot has a thicker foam between the driver and ear cup. This model has the left and right indicators on the outside are the hd660s logo. Ok, The sound, Muffled. Earilest model more muffled. Just remove the foam. Ok the sound again..... Not dynamic and can make some songs sound flat like a handheld miniature FM radio. My test song Donald Lawrence- Healed. This headphone can not take this song to the next level. Its flat not dynamic and muffled. Sound like a miniature FM radio. The Hd650 is better with dynamics not muffled either. But honestly just buy the hd650 or Sundura 2020. If u really know whats good. Just buy something else. I suggest a hifiman Arya or focal clear mg.

I bought these to round out a podcasting system (mic boom, mic and new headphones). The headphones sound great! But, what I discovered, after plugging into a mic that also has an amplifier built in, was that the stock sound out of my computer only used about 80% of the capacity of these headphones. So, if youre purchasing these as a stand alone headphone set with a separate amplifier, theyll still sound great, but not as good as they are capable of sounding.