I am using the Audio Magic Clairvoyant Liquid Air AC cord from my Bybee Power Purifier "Stealth" AC conditioner to the transport (the Sony box) of my Modwright modified Sony 5400ES (I have a Lessloss Signature on the seperate power supply). Haven't heard it with a DAC, but in my system it is the best AC cord I've heard with the 5400. I tried KS Emotion, ASI Liveline, Tara Labs The One, and several others on the 5400 and the Liquid Air cable easily bested them all. It is quiet, open, extended, fast, and musical, and is the most analogue sounding AC cable I've ever heard. The Liquid Air cable was a little bass shy on my modified Pathos TT - The KS Emotion was better there.