I sold off my T1 and HE-4 in anticipation of the promised release date, leaving me with just my Alpha Dogs and Beyer DT880. Everything I heard from reviewers, other than one, had me convinced the HE-560 was the ideal headphone for me. I had the 500 and the 6, and preferred the bigger soundstage and air, imaging/separation. It was sounding like the 560 had that, and a very balanced sound. Now one person that has the 500 and loves it, picks apart the design of the 560, and says it lacks sub bass, does a mod to his liking, and now leaving me for want. I wouldn't buy the 560 if it sounded closer to the past models, 500, which I sold within a few days of purchase. I just hoped they would leave the 560 the was they originally intended it. Now this is all mute if they find other things they need to change before release, but if the delay is just due to the "sub bass modd thing", I would probably be looking elsewhere for my next headphone. You've got the 500, if that is your preferred sound sig, but it's obviously not for everyone. Why make the 560 closer to the 500 with moar sub bass? Maybe I will just have to learn how to unmodd!!!!!