Wzxksoac 5X DC 12V 24V PT2399 Digital Mic Audio Amplifier Board Karaoke Plate Reverb Preamplifier Reverberator OP275 Op Amp

Dynamic microphone, electret microphone universal, a broader purpose Power input bridge reactor, can be AC and DC, DC input can be divided into positive and negative, so more convenient to use The latest upgrade: LM317 low ripple voltage regulator circuit design, preamplifier were used in a fever-class op amp OP275, JP1, JP2 Select the type of microphone for setting the pin: JP1, JP2 all the way, jumper plug is the working mode of the electret microphone, jumper cap plug is dynamic microphone mode of operation.