1、100W Power --- The BT stereo amplifier receiver provides 50W+50W dual channel stereo output, impedance 4-16 ohms. With unrivaled sound superiority and lets you enjoy high quality amplified audio. 2、BT 5.0 --- The sound amplifying device is equipped with BT 5.0 easier to link with wireless music streaming and convenient to switch different music. Works with latest devices including smart phone, tablet, computer decorders. 3、3 INnput Optional --- The digital amp box supports AUX/ USB/ BT input. Easy to connect the amp to DVD/TV/PC/STB/MP3 Player thr the AUX Input. And through the USB Input, you can connect the amplifier to usb flash drives, the supported music format includes MP3/APE/WAV/WMA and so on. 4、High Sound Quality --- Class D Hi-Fi Clear and high sound quality with no background noise especially for bookshelf / computer / desktop speakers, Phone/ MP3 player and so on. 5、Mini Exquisite Design --- Compact size, 3.5mm Input, gold plated RCA connectors, and improved speaker connectors, fine workmanship, good looks, simple functionality. Great to use in your car, your boat, your RV, your golf cart, your home, etc. Specifications: Color: Sliver Power Supply: 9V-24V Output Power: 50W+50W BT Distance: At least 12m ( No obstacles) BT Version: 5.0 Speaker Impedance: 4Ω-16Ω Item Size: 11*7*4.5cm/4.3*2.8*1.8in Item Weight: 300g/10.6oz Package Size: 15*14*6cm/5.9*5.5*2.4in 1 *  Digital Amplifier