At the time, the electrical system, bridge, and other components were custom-made, making this a "one-of-a-kind" masterpiece not found in other SUPER JAM series guitars! The front pickup is DIMARIZO, and the rear pickup is YAMAHA. It also features a bi-sound function as per the original specifications, resulting in an interesting electrical system! The bridge is also a YAMAHA original specification. This guitar gives you a feel for the atmosphere of Japanese guitars from the late 1970s! [Product Condition] I have kept this guitar in my collection. There are minor scratches and some dents, but there is no fatal damage, and it is in clean condition for a guitar of this age. Output has been confirmed through an amplifier. It sounds great! The volume and tone controls work without any problems, and the electrical system is in good condition. The neck is straight, and the frets have about 60-70% life remaining. Accessories include a hard case. Please check the photos carefully and understand that this is a used item before purchasing.