I love the product it came intact well packaged and the product is great as I already know it would be nice

Excellent battery life and easy to use.

Great sound quality and comfortable fit

Great sound quality and comfort.

Excellent build and fit, love it!

Excellent sound quality, comfortable to wear

Elevates my audio experience to a whole new level.

Extremely satisfied with my purchase.

It is a good product..only thing, you have send it through Bluedart which is a very poor Shiping Company I experienced... Since it delayed too much and I would call so many times to them to get the product

Impressed with the build quality.

Clear and crisp audio output, love it.

Clear vocals and deep bass, very impressed!

H660S2 is very well built transducer, it's quite clampy out of the box. The clamps can be eased but stretch softly over the metal band on both side.
Sound: music is warm with mids forward. Spiciness in the treble is not noticed. Bass is also subdued.
Note: My previous headphone are 560s, Sundara, Eligia and Clears.

Comparison:

With 560s: the 560s is v shaped compared to 660s2. Mids/vocals sound so good on 660s2. But the sub bass, mid bass, highs sound bit better on 560s. 660s2 suits clasical music while 560s suits rock, electronic and pop music. 560s also tend to distort with volume and eq, 660s2 doesn't sweat with volume and eq.

With focal clear: the focal clear is best in all genre no competition but vocals are slightly prefered on 660s2

With Sundara: Sundara sound very thin when compared but excels in details and soundstage.

Overall 660S2 or any of the 6X0 series headset are must for audiophiles. This headset sings with right vocal based tracks.

Great sound quality, loving the improved bass

I bought this TangZu Wan'er S.G IEM With Mic for my music listening, really they are awesome, excellent sound quality. Full satisfied with the experience. Thank you audio store.