Product Introduction:
1.Model:6j1 electronic tube
2.Sound Track Type: 2.0 stereo
3.Power Input: AC 12V 0.8A/5.5*2.5 plug
4.Rotary Knob Function: power switch/volume adjustment
5.Size: 77*75*52mm

Using Methods:
1.AC 12V Input:adopt DC 3.5/5.5*2.1 socket,use AC 12V power adapter;if you want to use no plug AC 12V transformer, you will need solder the power wire on the circuit board. Please kindly noted that don't use DC power input,or it won't work.
2.Left/right channel input:audio signal input port,you can connect it with cellphone,computer,MP3,MP4 etc.
3.Left/right channel output:audio signal output port,you can connect it with amplifier audio signal input port.
4.Power switch/volume rotary knob: rotate the rotary knob anti-clockwise, it will decrease the volume; when the volume reaches the minimum, you will hear a sound if continue rotating; then the power and indicator lamp will be off; in power off state, rotate the rotary knob clockwise, there will be a sound and the indicator lamp will be on; and it represents the power is on, and the volume is the minimum; then clockwise rotate it, the volume will be decreased.

Finished Product Picture:

Module Test:

I. Tested by ICStation's Outstanding Partner 12voltvids:

Learn More Details in the Video:
(The language in the video is English)

II. Tested by ICStation's Outstanding Partner Wahyu Eko Romadhon:

Learn More Details in the Video:
(The language in the video is "Music")