The Yamaha PW800W is a power supply unit known for its high efficiency and reliability. Designed for professional audio equipment, it is extremely compact and lightweight at only 3U in size and weighing 10kg. This unit features low-speed cooling fans that operate quietly, minimizing noise during use. It is versatile enough to serve as a redundant power supply for Yamaha's CL Series or M7CL and can also be paired with the PM5D, where two units can be serially connected for failsafe operation. Furthermore, the PW800W is capable of accepting a power input range of 100 - 240 volts, making it suitable for use in various locations worldwide.