The design utilizes a low noise/high current transformer, with discrete Schottky diode bridge rectifier, AC line filter, precision voltage regulator circuit, and 13,600uF of filter capacitance. Available in 120 or 240v input. Cables for Logitech Squeezebox Duet and Wadia 170 iTransport included.
Another version, the VDC•SB (US$259) is the 5v upgrade for Logitech Squeezebox Touch and the Classic SB3.