Hi Head-fi   I'm curious as to how the HD650 compares to the Beyerdynamic DT990 and Sennheiser PC360.   I have already listened to the DT990, I think they are overall good headphones. But trouble is the treble is just a bit too much and sound metallic at times. The bass is also a tad too...

Hi Head-fi   I have recently bought a Sennheiser PC360 "second hand", without hearing the model first. Which turned out to be a bad idea indeed, I am so disappointed by them. The sound was just so weak and it sounded like some frequencies were missing (I tried them on my phone, on my PC's...