Good quality authentic sound headphones with reasonable noise cancelling, but buy rechargeable batteries and a charger.

When everything else is going right, they have great clarity of sound; Pretty good at noise cancelling without distorting the sound; Clear authentic sound is what I was looking for so they are quite good for what I needed

Very battery dependent and they go through batteries very quickly and won't work if the battery is a little low either; I'm having trouble with volume too which I believe is an impedance issue, so be sure to match your equipment

The PXC450's give very open transparent mids and highs, with deep detailed bass. Smooth sounding. These are the best sounding noise cancelling headphones I've heard. The Bose Quiet Comfort Series sounds very muffled in mids and highs in contrast with the Sennheiser PXC450's and pale in comparison.

Spectacular sound. Quality hardware. Low sound leakage. Talk-through is cool. Very satisfied. Going to start looking at amps to go with it too. Also, great customer service!!

Comfortable; Durable; Great Sound; Stylish

No cons

Overall a very good product well made and attractive, very comfortable to wear for extended periods of time, sounds excellent and the noise cancelation works really well, also like the talk through function which I surprisingly used a lot, had it on a recent 4 hour plane trip with screaming kids...

I went back & forth between the Sennheiser and the Bose headphones. So far I am very pleased with these for overall comfort and sound quality. I have not used them in an airplane as of yet.

Sound Quality

Comfort; Not as comfortable as Boes

Very good for both home and travel.

Great sound

Large price tag

I sought to find a suitable upgrade/replacement for my Bose QC2s. After a ton of research I came across these. Most reviewers state that the construction, noise canceling and sound quality beat the Bose older and current Bose models hands down. Having tried first hand I absolutely agree!

Very high fidelity - Noise canceling is exceptional (beats Bose without question!!!) - Sturdy construction/finish

- Carrying case fits the headphones perfectly, but there isn't room for anything else; - Noise canceling works so well that it seems to muffle audio output

The price I paid : 350Euro around £300 Sennheiser, that's the name I think of when someone happens to mention headphones. Synonymous with quality of production but most importantly quality of sound. These are an older pair of headphones I have these around Four years now.

The Sennheiser PXC 450s (MSRP $449.95) are an all-around, decent set of active noise-cancelers that don't sacrifice much performance in order to block out unwanted noise-and that's rarer than you'd think.

I have this one from last 2 year's. Not using that much because it is big. It's give balance sound bass and tribble.

Clear sound balance sound

Bass is not that much