I was wondering if the Philips Fidelio M2L are being discussed at CES.   These headphones had a DAC and amp integrated and connected to the lightning connector of an iDevice.

There is a two day gathering at the Sheraton Detroit Novi Hotel by the Southeast Michigan Audio Club.  There are going to be exhibit rooms to check out different systems and set ups.  It costs $20 for a two day pass, info at www.akfest.com and its possible to reserve a room/table to set up...