Wall Wart, AC/DC Adapter, Model: DND-3005, 30 VDC 500 ma
It is designed in black color and made in China.
Shure Stereo Preamp Stereo Preamplifier 2-Channel RCA 30 VDC Silver/Black
Shure Stereo Preamp Stereo Preamplifier 2-Channel RCA 30 VDC Silver/Black