I am building a nice audio system in my car and I have a brand new x3 2nd gen as source... Unfortunately, it has a strange problem which has led me to consider swapping to the 3rd gen. However, I spent a lot of time building a faceplate for the old Fiio and to swap to the new model would mean...

^^^   I just got them last week and oh my wow, they sound great already, even just running off of a little Fiio amp/dac (I think it's the E17 or e07, can't remember)... What are some good amps and dacs to power the HD650s and how much mWs do I need?   I realize the HD650s might be a little...