Summary: These just rocked up.
Amazing clarity and accuracy to their sound, everything sounds ridiculously balanced and the instrument separation is awesome.
Haven't spent enough time with them yet to write a detailed review but so far all I can say is WOW.
Pros: Clarity, Accuracy, Sexy Drivers!, Bass
Cons: low impedance might be a problem with some amps
Summary: So, I've finally found MY headphones :) I tried the Sennheiser Momentum, the KEF M500, B&W P7, Sony MDR 1R, Philips Fidelio L2 (yes, the L2), the B&O H6, the Focal Spirit Classic (you read that right too) and the Sony MDR Z1000.
Pros: Clarity, clarity, clarity! Detail, neutrality, revealing, maybe even transparent? Very comfortable.
Cons: You will definitely hear the flaws in bad recordings
Summary: Well after lots and lots of reading I finally decided to buy these as my primary headphones. I was so excited I didn't even wait until I got home to un-box them. First thing you will notice is the magnesium alloy body which is a joy to touch and feel.
Summary: My initial impressions of this headphone were good, but it has taken a week for me of careful listening to really appreciate their qualities and purpose. Ultimately, I love these headphones and their sound signature. The 7520 doesn’t sound like ‘consumer’ cans.
Pros: Detailed, dense sound field yet with excellent clarity and separation. Accented articulate bass and sub-bass range that doesn’t bleed into mids
Cons: Sounds a bit closed in and rolled off on the high-end. Creaky. Shallow pads may cause discomfort especially for big eared head-fiers.