Brand N/A Model 03100274 Quantity 1 Color Black Material Glass fiber Specification Supply Voltage: 8~24V; Quiescent Current (mA): VIN = 0V IO = 0A 3.6 6.0; Output Power (mW): THD = 0.1% ; RL = 8ohm 150; Gain (dB): SW1 OFF 9.6 / SW1 ON 15.7; Load Impedance (ohm: SW1 ON 1.7 / SW1 OFF 3.3; Load Impedance (ohm: 8-16-32; Frequency Response (Hz): +/-3dB 50~600K Features It is a perfect class-AB architecture integrated LM4881 chips to achieve the single-channel 150mW power output; Moreover integrated with LM4881 chip this board also supports two-channel amplification and can be powered by any DC power supply ranging from 8V to 24V Application Mini / Micro Systems Personal Computers Microphone front amplifier MP3 player Video CD player output amplification English Manual/Spec Yes Other Size: 76 mm (L) x 50mm (W) x 12mm (H) +/- 0.2mm; Thermal shutdown protection circuitry; Adjustable gain; Wide power supply range: 8V-24V; Audiophile Quality Sound: 0.025% THD+N at 120mWrms 16 / 0.02% THD+N at 75mWrms 32; Mounting holes facilitate installation and fixing; Several wiring methods facilitate connection Socket (Default) Terminal Block(Optional); Excellent design of the power ports which allows you to connect multiple amplifier boards in series (Terminal Block Optional); Do not need an extra heat sink. Packing List 1 x Amplifier