The Sanyo PCM Plus 10 is a digital audio processor that was part of the Plus series, manufactured between 1979 and 1981 in Japan. It was designed to enhance audio playback with advanced digital signal processing capabilities. The unit features a sleek black design and was considered a premium product at its release, retailing for approximately $3,995 or 10,000 DM. The PCM Plus 10 allowed users to experience audio quality improvements in various setups, fitting well into high-fidelity home audio systems. It was one of the several models in the Plus series, which included integrated amplifiers, preamplifiers, power amplifiers, tuners, receivers, tape decks, and record players, indicating Sanyo's comprehensive approach to audio equipment during this era.