Because was simply written a lot about the benefits of headphones here my drawbacks I noticed:
- It is true that without batteries and Noise Cancelling still listen to music, the quality difference is then but as night and day. It then sounds easy as a couple 5 Euro Hospital Headphones
- Who likes to listen to music while running, should look at the In Ears (QC20) prefer. With every step you can hear unfortunately clearly a thud in the ear (what with bass-heavy music and isochronous pace but can be very horny again;)
- With strong wind, as it can now occur in the fall, the external microphone of QC 25 are irritated. You will then hear a faint noise in the background (like a camera recording the wind)
I give the Bose QC25 yet the full 5 stars because they do exactly perfect, for which they are built - undisturbed quality sound in noisy environments like train, plane, car or even in traffic-orientated parks.