HiFi Stereo AMP - This Dual channel stereo digital amplifier offer 100W+100W peak power and 30W+30W rated power, with 12V 5A power supply to connect the devices. Bluetooth 5.0 - Built-in bluetooth 5.0 core, no pop, no audible noise when Bluetooth connection is established, designed for the customers who pursue HiFi sound. (NOTE: Please keep the distance within 30ft/10m between the device and amplifier without any wall blocking. But if you are connecting whith TV or PC devices, please keep the distance within 15ft/5m.)