But its a portable device which equals listening environments far from ideal, are not into (very expensive) blue highlighter pen and CD freezing territory here? I confess I listened to Tidals test tracks and only got 4 out of 5 selections correct - as to which were the HD ones - have to confess I didn't find the difference night and day in any case (Macbook pro with Sennheiser Momentum headphones). I enjoyed listening to the HD Blu Ray Pink Floyd Endless River but that was via home cinema amp and speakers not a portable device on the bus??