This review is for the Zu BIRTH Power Cord.
Without any 'burn-in' at all and immediately on plug in, this terrific cord simply smoked the Straightwire Triaxial that was powering my Adcom GFP750 preamp. Vocals, immediately less glaring, more liquid. A more solid imaging and a touch of added air. I'm very impressed- all from switching the gdamned power cord.