Conclusion: PSB M4U 2 is a superb example of a premium headphone that does almost everything right. The headset provided good noise cancellation, a rich and brilliantly detailed sonic signature, and an impressive feature set, all bundled into one of the most comfortable pair of cans we’ve put on.
This headphone is the best I've heard.
I have Sennheiser PXC 450 and Bose QC 25.
PXC 450 has a poor sound if you hear the PSB M4U2 !
Bose QC 25 is impressive about cancel noise, but too much bass and not very musical.
Summary: Had these for just over 2 months now and have a couple hundred hours with them. These are a very balanced headphone in terms of the frequency range they are capable of. Paul Barton (the man who designs PSB speakers) suggests this is 20-20,000 Hz @ ± 1.5 Hz, and I believe him.
Summary: Just got my PSB M4U 2 headphones after a dilligent search for the right cans for my lifestyle. I am a "limited audiophile". Limited since my main genre is classic rock from the 60's and 70's. If you need a broader range of music style to consider, then please press on.
Summary: Bought this PSB M4U2 for a few days now,, super happy and excited - bought it from a headphone store. ( Headphone Bar - w. boardway, Vancouver bc )
I always wanted a noise cancelling headphone with passive mode and uses batteries than stupid rechargeable ones..
Pros: Very detailed and well balance + good enough punchy bass ( I love the amp mode ) Stylish ,,but bulky looking
Summary: I bought these headphones a little over a week ago, and thought I should post my impressions. I work in a small office, and sit close to my boss, who is constantly on the phone, so I wanted a noice-canceling big headphone for home and for the office.
Pros: Good in passive mode, great in active, and decent noice canceling
Cons: My ears get warm, and a bit too big and heavy for laying on my back.