Hello Carter
I Just bought the "Topping NX1" portable Amp (30 Euro on Ebay) for use with my B&W P7´s. Up until now I have been using the P7`s un-amplified with either Iphone 5S or an Ipod Classic. I play FLAC files on the Iphone using Ampliflac app or ALAC and 320 kbps MP3 on the Ipod. For use...