This is my first review on this site, so if I make any errors please let me know

Physical
Build: Eh... it's cheap feeling, with plastics everywhere, making it feel flimsy. The leather headband is nice, and the plush earpads feel great, but I can't get over the creaking noises they make when I adjust them. I suspect this is to make them lighter but I do not know.

Comfort: Excellent. The earpads are plush and deep, while the leather headband feels luxurious and comfortable, and doesn't snag my hair. The self-adjusting headband works great and I have no problems with it. The 712s are very light feeling as well, and I catch myself forgetting that I'm wearing them.

Price: I got mine for 80 dollars so lucky me, I guess...

Looks: dimensionally these guys are the same as the 702s and the 701s, but with a different color palette. I love the orange, it is absolutely striking to me and makes the 712s stand out, in a good way. The leather headband is super great looking as well, with orange stitching. Overall I love the looks of these cans.

Auditory
Lets start out with some EQ graphs

Frequency response

Bass

Some rolloff towards the low end, to be expected

Mids


Treble