Features: <br>1, Optimized layout and wiring. <br>2, No noise, no hum. <br>3, Using enhanced components, NP infinite input coupling capacitance and high frequency low resistance output coupling capacitance. <br>4, Using 1% precision resistor and 5% accuracy monolithic capacitor. <br>5, The bass effect is properly increased. <br> <br> <br>Specifications: <br>Type: Single Channel <br>Voltage: DC 9 V-35 <br>Quiescent Current: 25 mA (appr.) <br> <br>Speaker Impedance: 4 Ω-8 Ω <br>Output Power: 15 W(max 18 W) <br>Total Harmonic Distortion: 0.08%(Po=0.1 to 14 W, RL=4 Ω) <br>Signal to Noise Ratio: 94 dB-106 dB(1 W-15 W) <br> <br> <br>Package includes: <br>1 x Audio Power Amplifier Board <br> <br> <br>Note: <br>Heating will be higher as voltage or volume goes higher and heat sink may be needed.<br>1、Optimized layout and wiring <br>2、No noise, no hum <br>3、Using enhanced components, NP infinite input coupling capacitance and high frequency low resistance output coupling capacitance <br>4、Using 1% precision resistor and 5% accuracy monolithic capacitor <br>5、Voltage: DC 9 V-35, Output Power: 15 W(max 18 W)