The model is intended for those who put the quality of active noise cancellation in the first place - in this field, the QC25 has no competitors at all. For example, the model is great for people working in open spaces, or just sitting next to colleagues who are constantly talking. Pros below: 1. The best noise canceling among the active noise canceling headphones. When you put them on for the first time in the subway, train or airport, your jaw naturally falls off, the noise is so drastically…

After a few months, the power-on noise canceling function began to disappear. Very disappointing as that is why I bought them and believed the 'like new' description for the pair I bought. Even during operation, the noise reduction is not always of high quality. Good for air conditioning noise, but not so good for e.g. airplanes. Rather disappointing for the price. And when I spoke to the repairman I was told that the repair was not worth the price and that I should just buy another pair.

IF YOU ARE CONSIDERING PURCHASE YOU MUST READ THE FEEDBACK BELOW. It just broke, all of a sudden. I've always taken good care of these headphones and have always put them in a case when not in use and I even have a little cord organizer to tuck away the cord (I'm surprised they didn't provide one for you). works perfectly, until recently, after 2 months of warranty, the left earpiece was completely silent. I tried many ways and could not revive it at all. It's all on me I just bought $300…