Sound is great

These have a very honest and flat sound, and the bass is very clear, making the lows easy to mold when mixing.

Great sound

I can say that I like the sound of M50 better compared to DT 770 Pro 80 ohm

Great sound but the build feels cheap

No they don't leak as much as open cans, but if you're looking for cans that don't leak sound, these aren't them.