This vintage power supply by Channel Master is a must-have for collectors of vintage electronics. With a capacity of 4 watts and compatible with 117 VAC 60Hz, it is designed to power preamplifiers and other audio and video equipment. The brand is well-known for producing high-quality vintage parts and accessories, and this model 0021C is no exception. The item is used, but it is in excellent working condition and has been carefully maintained over the years. The brand and model are well-respected and sought after by vintage electronics enthusiasts, making this a valuable addition to any collection. Get your hands on this rare find today.