Thanks. How the signature DJ sound compared to the Sig PRO ?
Can the Sig DJ be used for "audiophile listening" ?
Can the Sig DJ be used for "audiophile listening" ?

I can only talk about the Signatures. When they are playing at my standard listening level, which will neither cause tinnitus, nor will make me deaf, my wife can sleep without any problems next to me in the bed. When I press the cups together and play the music as described before I need to get as close as 8 inches / 20 cm to hear a little sound escape from the cans.
+1 : Leakage is very close to none on my Sig pro. Even while listening at quite loud volumes 