Directions for use: 1. Connect speakers:The speaker two thread ends at of is connected to the amplifier board audio output port, left sound channel the positive line connect power amplifier board LOUT port, the cathode connect to GND.Right track the positive line power amplifier board the ROUT of port, the cathode connect to GND. 2. Connect audio source:Use a 2 core audio line, connected to the amplifier board of 3 p audio input, connect the other side of the audio line plug to (such as computers, mobile phones, MP3, DVD, etc.) 3. Connect the power supply:Use 1.8-12 v dc output of the power adapter/battery/charging etc all can treasure.Will two dc power cord is connected to the amplifier board.2 p power source port, the positive line to VCC, negative to GND, the connection is important to make clear is negative, not blindly wiring, if meet the could seize power amplifier board. 4. :Put through power supply, amplifier board into working state;You can the befond of according to to adjust the volume knob, you can enjoy the magical of eagle amplifier board. This board features: adopts TDA2822M power amplifier chip, it has many advantages such as small static current, crossover distortion characteristics.Suitable for portable, miniature tape recorder, computer audio power amplifier.In the era of portable tape recorders, 85% are TDA2822M amplifier chip. Amplifier with the volume control potentiometer, convenient for the to adjust the volume size, at the same time Presented a cap quality knob. The audio all adopt the wiring , users do not need to use soldering iron, as long as a small screwdriver can easy wiring. circuit boards have a Screwdriver screw terminal and do not need to use the soldering iron can fast connection, even if you 't have any for , see the wiring is also , DIY power amplifier so simple. The performance parameters Power amplifier output power Rating: 1 w x 2 (1-3 inch speaker) The maximum power: 1.5 W x 2 (0.2-5 W can meet the speakers) Speaker impedance: 4-32 Power amplifier sex ratio: 50 db Net weight: 25 g Distortion: 0.1% Input interface: 3 p wiring jokes Adjust the form: volume adjustment The input voltage: DC1.8-12V Power amplifier board size: 42 (excluding potentiometer bulge) long * 30 (width) x 25 mm (high) color: blue Material: metal + PC Package Contents: 1*CAR Volume Control Potentiometer Module Only the above package content, other products are not included. Note: Light 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.