Pros: Accuracy, neutrality, bass, highs, build quality, lack of distortion
Cons: Clamping force, uncompromising with inferior sources
Oh my. If this is how beyerdynamics builds their stuff, then I WANT MORE.
These are the perfect complimentary 'phone to my Sennheiser Momentums. Both are built like tanks, but the sound qualities are so different. Where the Momentum is warm and forgiving, the DT1350 is cold and analytical. Where the Momentums are mid-centric, these are flat. Where the Momentums have character (good character), these are robots.
This is the best analogy: the Momentum is Kirk, and the DT1350 is Spock.
I am a scientist, and love quantitative data to back up claims, but the frequency response curves for this headphone does not tell the whole story. I can tell you, as a former recording musician and possessor of a very sensitive ear, that these are as accurate as 'phones get in the under-$1,000 category. The sub-bass is strong and punchy, but not overdone. Bass is strong and present, but, again, not overdone. Mids are not recessed, but not overdone; very smooth. Treble: what a revelation! You can have treble, and plenty of it, but it doesn't have to be sibilant and piercing! Amazing! I was startled several times when I heard Paul McCartney breathing whilst singing on "She's Leaving Home". I really thought my wife was trying to talk to me - because I can't hear a darn thing with these on.
I didn't like the AKG K550 because it was too piercing, but I loved the accuracy. This is like the K550, minus the extreme pickiness of placement (although take your time with these) and fizzy highs. If you need a headphone that makes everything sound good, get the Momentum - it's seriously amazing. If you need a headphone that makes everything sound exactly as it was meant to sound, get this - it's seriously amazing!