HiLetgo 3pcs AD828 Stereo Preamplifier Board Preamp Power Amplifier Board AMP Module DC5V-15V 12V

Description: AD828 Operational amplifier front amplifier, audio amplifier module, single power supply. Small volume design, full patch process, input and output coupling capacitors using imported non-polar brand capacitors, operational amplifiers using fever grade AD828 patches. If you feel that the default magnification is not appropriate, you can change the magnification by yourself as follows: How to adjust magnification: R7 and R5 are the magnification setting resistors (the default delivery is about 5 times magnification, you can change the magnification according to your own needs, the resistance can be selected from 5k-47k, the greater the resistance, the higher the magnification, if you use plug-in resistors , You can remove the original chip resistor and solder the plug-in resistor on the pads reserved at both ends of the chip position) Specification: Working voltage: DC 5V-15V Board size: 33x25mm/1.3"x0.98" Note: The board has no voltage regulation function. It is best to use a regulated power supply or battery-powered, otherwise there may be interference. Package included: 3* AD828 Stereo Preamplifier Boards