Just got my FiiO E9 - Been sitting under the tree for a while now! Anyway, been using it all morning with my AKG K702s.. and well, I think it sounds pretty bad. Seriously, they sound better connected to the headphone out on the pod of my Bose Companion 5 speakers. In fact, connecting these AKGs directly to the headphone port on my iMac gives me a better sound that this FiiO. I've tried the E9 with my Sennheiser HD 238s to see if it's because the AKGs are hard to drive, and the Sennheisers sound worse than being connected straight to the iMac or iPod. What's going on?!?! This headphone amp had such good reviews but I can't get it to sound good on anything. Will try my Shure SRH-440s later on, but I just don't understand why all of my headphones sound better connected directly to iMac or Bose Companions. Trying to describe the sound... Well the sound becomes hard to listen to, very harsh mids and the treble isn't smooth. Bass is just about lost. Makes my AKGs sound like a pair of £20 cheapies from Asda. AKGs aren't fully broken in yet but they've had in excess of 100 hours. Permission to cry?