What is the best source DAP to use with these? I'd prefer to spend under $1,000. I am a little lost because of the whole 9ohm impedance situation. From what I gather, I should have a source or amp with an output impedance with 1ohm due to the 1/8th rule. I've picked up a Fiio X3, but the UI is driving me nuts and it isn't sorting files properly when in album mode even with the latest firmware. I do believe the Fiio X3 has an output impedance of 0.3ohm out of the headphone output though. Should I just wait on the X5? Anyone got one they are selling? I'd be willing to consider an AK, but none of them have an output impedance lower than 3ohms. I have heard mention of the iPod Touch 5th gen, because it has a low output impedance, but wouldn't I need to use an amp with it, thus defeating the purpose of it having a 1ohm headphone output impedance? What amp would be good to pair it with if I used my HTC One or iPod touch / nano / iPad with lightning connector?
I have the following source units:
iPod classic(R) Gen 5.5 80GB - White
iPod nano 7th gen
iPad Mini w/ Retina Display