How satisfied are you with the E12 connected, I currently use a DAP, but reading up on the quality of the DAC in the iPhone 6, apparently Amping that would not be detrimental to the sound output. I have an iPhone 6, and also a FiiO X3, due to the 250Ohm headphones I am using, the iPhone was not substantial enough to power them so I opted for the aforementioned DAP. I am unsure as to whether to return the X3, and buy an E12A, as I don't to compromise SQ overly. I listen to...