The Zetheron Dynavolt USB Dongle ($95) will be available for purchase on the Zetheron website in a few days with shipments starting in around 2 weeks.  This performs generally the same function as the hard-to-get DC1613A, except that the Dynavolt works right out the box and allows 'live' or dynamic voltage adjustments while mining.  Not only does this give the 30% hash boost on the VCU1525 (11 to 15GH/s on 0xToken, for example), but it also allows the mining software to drop the voltage to the minimum possible level where there are still minimal errors, reducing electricity consumption 15% or more.

The Dynavolt is specifically designed to mount on the VCU1525 and 'live' there permanently.  It also includes an open-platform API library so other developers can access it as well, for live voltage adjustments and live current/power monitoring.

Eric