Pros: Fantastic sound, build quality is excellent, easy to drive, easy to transport
Cons: A little pricey for non EU customers (though better value in the EU)
I have my Signature Pros a few weeks now and i am really enjoying them.
I have been into headphones for about 4 years now and these are my most expensive pair (i have a pair of Denon AHD2000, Grado SR225i and Etymotic ER-4PT to compare to).
I was looking for really good quality portable headphones that have decent isolation and great sound and these fit the bill perfectly.
The sound quality is fantastic, the bass is solid without being overpowering, the middle is beautifully balanced and the treble is crisp without any sharpness. I have found the instrument separation is really noticeable and ive been rediscovering a lot of my music again and hearing parts i never knew existed. The soundstage is very good though not in the class of a well driven Hifiman HE6 it is the best ive heard from a closed headphone.
I have driven them from my Fiio X3, and iPod with the Fiio E11 portable amp, my laptop and my iPhone directly and they all drive the cans very well.
The headphones are well made and you can feel it in your hand, the leather is beautiful and is very comfortable. They fold easily and come with a very nice hard case which makes transporting them a simple matter.
Bottom line I’m wearing them for about 4 hours per day, they always feel comfortable and the sound is never fatiguing. If you can afford them id say treat yourself!