This limited edition Acrylic Glass Print, designed by Giggu Gioggu, comes with a numbered and signed certificate of authenticity. Printed on archival-quality photo paper mounted on the back of a 1/8" thick, clear acrylic substrate, this artwork comes ready to hang on a wire attached to a wooden frame fixed on the back.
Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.