On the topic of M4U 1 and PM-3, I tried both and decided to go for the latter. Why? Personal preference. Which is better? Why is it better? Is it really better?  One man's meat is another man's poison. I like it, you don't, he likes it, she doesn't. That is just the way it is.  Glad there...

Background  About a year ago, Westone released their new W-series in ears, and I happily jumped on the wagon when the W40 was released, only to realise a few months later the W50 and W60 was announced. Well, that is impulse buying for you...  So after a year using and enjoying the W40, I...

It would be exciting what they can come out with, especially when the in-ear market is getting quite saturated in the recent years. 

There are, but they are harder to find. Alternatively there are adapters in the market that converts "regular" square heads into your "round heads" used on consumer units. 

  (1) Buy them from Beyerdynamic direct or from the regional distributor. For some weirdest reasons, they don't make their dealers stock parts.  (2) Lessen the clamping is best done so by "brute force", so to speak. Physically bending the headband gently but with force. Or use a basketball...

HD25s had better isolation, but it comes with the price. Head clamp. Not as comfortable as the PM-3s. 

Wrote a simple review of my OPPO PM-3 purchase, and in the comment field I will update with my own discovery of the PM-3 sound. This is a very interesting pair of headphones. Currently serving in my home studio as my tracking headphones. It helps when the cans are not fatiguing for long sessions...

I order them direct from the Beyerdynamics distributor in my region. 

I find the treble "tamed" and the bottom end more pronounced. The mids are a little cleaner, but as compared to the other more neutral headphones/earphones, the Triple Fi does not really change much, nor benefit sonically when paired with the HA-P50.