The Kenwood Model 500 is a vintage audio amplifier produced by Kenwood, a Japanese consumer electronics company. It was manufactured during the 1970s and is known for its high-quality construction and audio performance. The amplifier has a power output of up to 50 watts per channel and features various input and output options, including phono, tape, and auxiliary inputs. It also includes tone controls and a volume knob on the front panel. The Kenwood Model 500 is sought after by audio enthusiasts and collectors due to its historic significance and audio capabilities.