This HiFi digital amplifier features an aluminum alloy chassis and supports Bluetooth 5.0, Usb flash drive, Sd card, and Aux multi-source input, along with a built-in Fm radio. It offers dual-channel output with an Rms power of 40 watts x 2 and a peak power of up to 200 watts x 2, compatible with speakers from 4-16 impedance. Its low-distortion design delivers clear and powerful sound quality with a 90dB signal-to-noise ratio. Remote control operation is supported, making it suitable for home desktop audio or car audio upgrades. It measures approximately 6.1 x 3.3 x 1.7 inches and weighs approximately 0.77 pounds. Please note: This product does not include a power cord or power adapter a 12V 3A adapter must be provided separately. The package includes the amplifier unit, remote control, and instruction manual.