<p>Audio input: 3.5mm stereo input, USB audio input ,Bluetooth 5.0 ,RAC input, TF card, USB input (can be connected to computer, mobile phone, OTG)</p> <p>Using TPA3116 chip, the maximum power can reach 50W, with 12V 5A, the actual output power reaches 30W*2, 4 ohms</p> <p>Hi-Fi sound and Powerful: HiFi clear and clarity sound, no audible noise, our spent a lot of time and efforts to optimize the circuit to it has no noise even at the maximum output power.</p> <p>Long the Switch Turn On</p> <p>Output power: 50W+50W</p> <p>Power requirements:DC9V-24V</p> <p>Bluetooth distance: At least 12m ( No obstacles)</p> <p>Bluetooth agreement: Bluetooth 5.0</p> <p>Speaker Impedance: 4\u03A9-16\u03A9</p> <p>Colour:Black</p> <p>Material:plastic</p> <p>Package Contents:</p> <p>1 x Digital Audio Power Amp</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>