Main Features: -Small simple compact design but practical and powerful, little Hi-Fi Bluetooth wireless amplifier exclusively designed for the customers who pursue HiFi sound.  -Bluetooth 5.0 core, up to 50ft connection range guarantees low signal delay, no audible noise when Bluetooth connection is established. -Two 100W MAX output which can drive 280watts(8 ohm), 320watts(4 ohm/24V Load) speakers. (For passive speakers only, not the powered speakers.)  -Advanced circuitry design, built-in speakers protection circuit, best for  bookshelf/computer/desktop/speakers in your home.     Specification: Power Amplifier Chip:TPA3116D2 x 2, NE5532 x 2;  DC Input Range:12-24V;  Voltage:AC 110-240V;  Terminating Impedance: 2ohm-8ohm;  MAX Power Output:100W x 2(4ohm/24V Load);  THD:≤0.04%;  Frequency Range:20Hz-20kHz(±1dB);  SNR:≥98dB;  Input Sensitivity:≤280mV;  Input Mode:Bluetooth & RCA;  Bluetooth Version:Bluetooth 5.0;  Bluetooth Distance:30m;  Bluetooth Chip:QCC3003;     Dimension: Product Weight:0.70kg;  Product Size (L x W x H): 9.00 x 13.20 x 3.60 / 3.54 x 5.20 x 1.42 inches.     Package Contents: 1 x Amplifier, 1 x Bluetooth Antenna, 1 x Power Cord, 1 x Manual, 1 x EU Plug(We will send you an adapter which according to your country)