Summary: I have the Audio-technica ATH-ANC7 which I love, but after 15 months they went out (or so I thought....after ordering the Sennheiser PXC350 I found out they had become partially unplugged in the back of my PC) I was tired of headphones going out so I was looking for a longer than 1 year warranty so I decided to try the Sennheiser. Comparing the Sennheiser to the Audio-technica ATH-ANC7 I could tell no different whatsoever soundwise..
Summary: I bought these to replace a pair of Bose QC2. PXC-350's sound reproduction is excellent and superior to Bose. The "sound stage" is more life-like to me. The bass is tight and has a nice punch without any muddiness; mid-range is clean and well defined; highs are crystal clear. Noise cancellation is superb. The PXC-350s are heavier, but, as far as I'm concerned, the extra weight is an acceptable trade-off for the solid, tank-like construction.
Pros: Comfortable, Durable, Good Value, Great Sound
Summary: I bought these to replace my Sony MDR-NC60's that my son absconded. I need a pair of NC phones for 10+ hour flights I frequently take. I chose Sennheiser because I love my HD-580's. The PXC-350 appear to be a NC version of the HD-280 Pro's which I'm not that fond of though. The positive notes: good ear cushion, nice volume control, NC is better than my Sony, good cord length, nice case with accessories, and good weight.
Summary: I researched these after experiencing the excellent quality of the PXC-100 headphones I use when I work out. The sound of these headphones is fantastic! It is detailed and rich. You hear details and nuances in the music you never noticed before. The bass is full and at the appropriate level for all types of music (including rock music), not overpowering like some others. These headphones have excellent construction and a quailtiy feel to them.
Summary: These headphones had better overall sound compared to the Bose noise canceling and did and alright job at cutting out airplane noise. However, the audio seemed flat and had to be turned up way to loud in order to hear, which you shouldn't have to do with noise canceling headphones. Way to expensive and bad quality audio equalled me returning them for a full refund.
Summary: I bought this product after a great deal of reseach on noise cancelling headphones. To me the decision was between the bose quiet comfort 2(not 3) and sennheiser 350 (450 was way outside what I was willing to spend). I wouldnt call myself an audiophine by any means and my primary use and purpose for these headphones is to use while studying/working in noisy environments.
Summary: I am cautious with my personal purchases; I want great performance, durability and customer service. I researched, sampled, reviewed, and made my decision on the Sennheiser. [...] the pricing was the best I found. My wife took the headphones over, I am going after another pair. Highly recommend this product and merchant.., much better than Bose in my opinion.
Summary: I'm a long haul semi driver that used to design and build sound reinforcement equipment for military rock bands, so I know quality audio when I hear it. My original purpose in purchasing noise cancelling headphones was to lower the high levels of road noise in my job. Competitors' products had varying degrees of effectiveness in this for me; but I found them extremely uncomfortable after an hour or two.
Summary: The around-ear design makes these a bit larger than some, but perfect for working with the noise cancelling properties and wonderful sound production of this headset. I travel 200,000 miles a year, and these are always with me. Better than Bose in my opinion.
Summary: I bought a pair of PXC 450's when they first came out. I travel a lot for work, and I wanted the very best NC headphones I could get, since I have never been able to like IEM's from a comfort perspective.
Unfortunately, the PXC-450's were fatally flawed - when the NC circuit was engaged, the bass went completely away. I mean completely. So I returned them, disappointed. I was using the Audio Technica ANC-7, which are very good, but I was certain there was some...
Pros: The best sounding NC headphone I have heard; also sounds good with the NC off
Cons: positioning on the head critical to having the NC work well