Made to stand the test of time this solid-state Curtis Mathes 8 track player receiver was made with the best electronic components of its day. This late 1960s 8 track device was well made with a system that is based entirely on the the use of semiconductors. The Curtis Mathes Company became masters of design in the field of stereo semiconductors and solid-state components for receivers and stereos during their day. The Curtis Mathes Company in the early 1960s were the world leaders of design during the transition from the vacuum tube technology to the semiconductor diode and transistors as seen in this flawless 8 track receiver. For more information check the link below: http://glennwaters.hubpages.com/hub/Curtis-Mathes-Solid-State-AM-FM-8-Track-Stereo-Receiver-63-1