Input voltage: AC220 v
Output voltage: DC 12 v
Output current, output current acuities 200 ma
Input: V (pick-up positive) A (pick-up signal output positive) G (public, is also the pick-up power negative and pick-up audio output negative public end)
Output interface: A 3.5 mm headphone jack, A two core terminal (A for audio signal positive, G for audio signal negative)
Volume control: the power can be directly monitoring pick-up, with the volume potentiometer, adjust signal output amplitude size, so as to control the size of the voice.