The Nakamichi PS-100 and Microphone Mixer MX-100 are vintage audio equipment manufactured in Japan. The Nakamichi brand is known for its quality audio products, and these models are no exception. The PS-100 is a vintage cassette deck, while the MX-100 is a microphone mixer, both designed to provide high-quality sound and performance. These products are sought after by collectors and enthusiasts of vintage audio and video equipment.