[còn hàng] [COD]DC 12V 24V PT2399 Digital Microphone Audio Amplifier Board Karaoke Plate Reverb Preamplifier Reverberator OP275 Op Amp

The latest upgrade: LM317 low ripple voltage regulator circuit design, preamplifier were used in a fever-class op amp OP275,Power input bridge reactor, can be AC and DC, DC input can be divided into positive and negative, so more convenient to useDynamic microphone, electret microphone universal, a broader purposeJP1, 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.Microphone reverberation chip using PT2399, microphone amplification, preamplifier respectively, using a fever class op amp OP275, microphone board two microphone volume can be independently controlled. Dynamic microphone, electret microphone can be universal. Board has MIC-1 volume, MIC-2 volume, reverberation times, reverb, external audio volume adjustment.Working voltage: AC: 6v-17v or DC: 12v-24vColour:RedMaterial:plasticSize:100x50mmPackage Contents:1 * Audio Amplifier Board