Just as I was about to order the P7 and FIIO X5III I had an epiphany!! Don't go mid-fi you idiot, I said to myself, go hi-fi. So I ordered the 1990's instead. Just listened to Opeth's Ghost Reveries. Anybody thinking of buying these and are worried about bass slam there are no worries. Just phenomenal. I am stunned by the performance of these headphones. My 1st decent pair and I have no regrets. I may need to upgrade my amp though I gotta say the HA2 seems to drive them quite well but then again these being my 1st high impedance cans I would not know. Thinking of going beserk and ordering the iFi Micro IDSD Black but do I really need it?? Anybody else here using the oppo?? Edit: The Australian Distributor of these is offering an additional 1 year warranty bringing it to 3 years - not bad.