I bought these to replace my Sony XBA-1Ps, and they are a wonderful upgrade. The strong bass that never appeared on the previously named model is plentiful here, and the detail in the treble is amazing up to 40KHz (Madonna's Frozen well worth a listen). Vocals are also strong. The noise reduction is good but not completely effective; in some ways it actually amplifies some sounds by cutting out others (such as train noise disappearing only to leave the sound of people talking coming through quite clearly, which is more irritating), though they are wonderful at cutting out external base (the real sound polluter).

I like the design of this product, as I was looking for a small noise cancelling earphones, so this fits the bill. It is a quality product, albeit a bit on the expensive side. The earphone are good in use, the only slight annoying feature is the location of the battery. Should have an option to detach the earphones from the battery pack when not using the noise cancelling function.

I purchased this to accompany my Sony Hi-Res Walkman. The noise cancelling works brilliantly and the sound quality from Flac files is amazing.