100whifi Fever Grade Bluetooth 5.0 Small Digital Power Amplifier Supports U Disk Sd Card Rca Audio Input Bluetooth 5.0 Lossless Transmission The Signal Is Stable, The Transmission Distance Is Long (Up To 12m), And It Is Intelligently Compatible With 99% Of The Equipment Pure Copper Gold-Plated Terminals To Enhance The Stability And Accuracy Of Audio Transmission Signals Attractive Appearance With Correct Size And Quality The Compact Size Is Very Suitable For Home And Desktop Use. It Can Be Used Not Only As A Power Amplifier, But Also As A Pc Sound Card. One-Piece Plastic Shell And Led Display, Unique Design Makes It Smooth And Textured. There Are No Visible Screws On The Surface To Ensure Its Solid And Clean Appearance. The Vu Watch Will Dance To The Music, Which Is Beautiful And Practical. Versatility And Amazing Performance Support Multiple Inputs (Aux/Usb/Bluetooth). The Usb Interface Supports Computers (No Driver Required) And Mobile Phones (With Otg Function), Which Can Provide You With Almost All The Ways You Want To Enjoy Music. It Provides You With An Excellent Listening Experience At A Very Low Price. The Volume Knob Uses An Expensive Encoder. It Is Not An Ordinary Potentiometer To Avoid Noise When Adjusting The Volume. High-Fidelity Sound, Powerful And Powerful Hifi Clear And Clear Sound, No Audible Noise, Our Engineers Spent A Lot Of Time And Energy Optimizing The Circuit To Ensure That It Can Drive Most Home Speakers Even At The Maximum Output Power (100w (50w * 2)) .) Parameter Bluetooth: 5.0 Version, 12m Distance Audio Input: 3.5mm Aux, Bluetooth And Usb. Audio Output: Banana Speaker Jack Output Power: 50w*2 (24v/4 Load) Speaker Impedance: 4-16 Frequency Response: 20hz-20khz (1db) Signal To Noise Ratio: 98db Power Supply: Dc9v-24v (With Reverse Connection Protection) Size: (W) 90 * (H) 50 * (D) 110mm (3.5 In * 1.9 In * 4.3 In) Net Weight: 220g