I use a few weeks now.
bandwidth is fabulous ... it goes down low ... very low and the treble is very well rendered.
a medium very clean, very precise means any medium on the top ... I'm surprised to rediscover some instrumental parts in songs, I listened commonly auparant.
medium and low serious enough individual that will not satisfy everyone ...
I had a Sennheiser HD200 from home before, in a range well below, with a serious and pervasive medium heut draft to be ... it changes and it's nice. A very wide stereo image and comfort greatly appreciated compared to other models ... (for people with glasses is always death that said ...^^).
I tried a 7506 from Sony ... the top medium is just too rough and loud on this headset yet in the same range ... DT770pro the product is radically different, much more accurate I think ... with a serious a bit shy but we mean well and down ... going down ...^^
very good isolation from outside noise:-18dB SPL I think ... Anyway do not expect to follow any conversation by listening to your music ... it's impossible ... for it is very useful against recording ... no ... repisse