The Vintage Craftsmen Solitaire C250 Integrated Tube Audio Amplifier is a rare and collectible piece from the Radio Craftsmen brand. Made in the United States, this one-unit amplifier features integrated tube technology, providing a unique and classic sound for vintage audio enthusiasts. This item powers on with no hum. The tubes light up as noted in pictures. Signs of wear and age as noted in photos. Please see all photos for detailed item condition inside and out.