SENNHEISER HD 660 S - HiRes Audiophile Open Back Headphone

Very very nice.

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!

Would someone be able to tell me whether the Aune B1 amplifier would work well in between the 660s and an iPhone/iPad? If not which amp is best for this setup given that I’m constantly traveling and want to get the best possible sound quality in a portable configuration? Many thanks and well wishes in advance for your thoughts...

Estos audífonos son sumamente claros y versátiles, las frecuencias medias son muy íntimas, con cuerpo, y mucha resolución. Las frecuencias altas no son sibilantes, ni ear piercing, y los bajos están en su justo lugar y con mucho detalle.

Just what I was looking for for a few years! Tried Bowers and Wilkins, Sony and was not satisfied.

Using to listen to music online, as advised.

Full yet detailed sound. Used with Hegal integrated amp and Woo Audio WA22 headphone amp. Amazing, engaging sound. Dynamic, detailed, warm and smooth. I have Grado phones, similar quality sound but more upfront presentation.

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.

we tested this headset against 3 other Sennheiser headsets, the MASSDROP X SENNHEISER PC37X, the GSP 600 and the HD 600.

Great sound, good build quality, needs an amp to sound loud.