- Operating without a battery => for the old device, it is so that when the battery is empty, it is simply no longer possible to use the headset. This is resolved much better with the new device. If the battery is empty, then you can still inserting the headphones. It works just not the active NoiseCancellation.
- NoiseCancellation => firstly isolated the QC25 been passive (NC off) a little better than the previous model, the ambient noise. With active, switched noise cancellation hardly anything from the environment audible (flyers, Car, Railway Station) is - and effectively better than its predecessor.
- Dizziness => I am one of those to whom it is a bit dizzy with active noise cancellation. That was the previous model very bad, probably the same one over time somewhat accustomed. In the QC 25 I have problems hardly!
- Pack size => as a frequent traveler, the pack size is important to me. In fact, the smaller and much shallower than the previous model. Even the folding / packing mechanism ('m more impatient Grobmotoriker) I find it very easy to handle - easily solved great.
- Sound => typical Bose sound, but again, a slight improvement over the previous model.
- Cable => Finally you can also remove the cable. That could not be the previous model.
Conclusion: Anyone looking for a NC headphones will be well served with the new QC25. I also had non-Bose headphones in view, they either are inferior to the pack size or the sound of the Bose.
If the review contained interesting aspects for you, then I would be "helpful review" looking forward to a very. Thank you. :-)