Features: Advanced circuit design built-in speaker protect circuit, most suitable for bookshelves/computers/desktops/speakers at home. Can drive 280watts(8ohms), 320watts (4ohms /24V load) speakers, (only for passive speakers, not for active speakers.) Power: The hifi amplifier has a built-in power cord that can be used to connect speakers and other devices. You can enjoy music anywhere. USB Port: USB port for any type of power supply, such as pc, laptop, computer, etc. Pair with a usb-c compatible device via to wirelessly transfer from a phone, tablet, or laptop. Small, simple and compact design, but practical and powerful, designed for the pursuit of customers design of small wireless amplifier; BT5.0, up to 50 feet of connection ensure low signal latency. When the connection is establishing, no noise. Specifications: Material: Aluminum Alloy Power Amplifier Chip: TPA3116D2x2 NE5532x2 Input Range: 12-24V Terminal Impedance: 2ohms-8ohms Power Output: 100Wx2 (4ohm /24V load) THD 0.04% Frequency Range: 20Hz-20kHz (1dB) SNR: 98dB Input Sensitivity: 280mV Version: BT5.0 Can drive 280watts(8ohms), 320watts (4ohms /24V load) speakers, (only for passive speakers, NOT for active speakers.) Type: UK/EU/AU/US Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Sound Power Amplifier