HiFi power amplifier class D DC12-24V Bluetooth 2x50W Lepy LP3116 Features Brand: LEPY Model: LP3116 Class D Supply voltage: DC 12-24V / AC supply: 100-240 VAC 60 / 50 Hz Power supply included Audio cable Male to RCA L / R male audio jack included DC output: DC19V ; 3A Power:= 2A. Maximum output voltage: 1.6 V. Frequency response: 20Hz to 20kHz. Output power: RMS 50 W x 2. Speaker impedance: 4 to 8 Ohm. Total harmonic distortion: & lt; 0.4%. Output impedance: 100K Ohm  SNR: 80 dB. Bluetooth version: 4.0. Audio inputs: 3.5mm AUX and Bluetooth Article size (L x W x H): 175 x 101 x 35 mm.