***** **********Best Quality Guranteed. *****Upgrade your speakers and subwoofer with a 120W@4ohm x2-channel amplifier, high-fidelity streaming music. *****Bluetooth 5.0 amplifier with aptX LL let you stream music and stereo sound in crisp. *****With a 6dBi high gain antenna for long range streaming up to 65 ft (20m) in a complex wall structure. *****With a world of input mode options, DA2120C is always getting satisfy in different occasions. *****Built with multiple input of Bluetooth/USB/optical/coaxial/RCA, including a remote control that infrared adjust the inputs mode/volume/bass/treble/EQ/mute/loudness setting ect.