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May 16, 2020
Sounds great, but has a tight, uncomfortable fit. EDIT: NO WARRANTY
As a beginner when it comes to audio gear, I like the sound of the M4U2's. Pros:
  • I do like the inclusion of the folding earcups, which my previous headphones (Skullcandy Venue) did not have, and with other features, such as the dual inputs on both sides of the headphones.
  • The limited warranty included in the box says that I have 2 years of coverage for these headphones, but I do not know where you would contact for warranty claims. EDIT: PSB doesn't warranty headphones bought off of As I thought, there is NO WARRANTY.
  • In my experience, they are easy to drive, not really needing an external DAC or amp. I've tested with a computer with a Behringer U-PHORIA UM2's headphone output, and the Lightning to 3.5mm adapter on an iPhone SE 2. Using the Active mode allows you to get some extra punch in the sound in some places, though in my testing, I couldn't hear much difference between Passive and Active mode.
  • The carrying case is very good as well. Nice and sturdy, while being compact, thanks to the folding earcups.
  • As told by other reviewers, the ANC is nothing to write home about today. If you're looking for the perfect ANC headphones like a set of Bose or Sony headphones, save up for those, as the ANC featured on the M4U2's are more suited towards constant noise, like the sound of an airplane engine, and not coffee shop noise. But, these headphones are 8 years old (to my knowledge), so it's impressive for the time.
  • The headphone's fit is uncomfortable for me, which is a shame, as I had planned to make these headphone's stay at my computer desk. It feels fairly tight against my head, and therefore, my ears. I wish these headphones had earcup swivel, as that would make it a fair bit more comfortable.
  • The build of the headphones itself is good enough, but I feel like the plastic feels a bit cheap, especially since it costed $400 back in 2012 or so. I appreciate the adjustable metal headband, which makes up some of the durability worries.
Closing Thoughts: I think the PSB M4U2's are good for the price on Drop, currently $85 excluding tax as of May 16, 2020. But for the MSRP price for these headphones of $249, I would recommend looking elsewhere.

Would recommend to a friend.
May 16, 2020
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