4X DC12V 24V PT2399 Digital Microphone Audio Amplifier Board Karaoke Plate Reverb Preamplifier Reverberator OP275 Op Amp

Cwmiibili 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:4 x Audio Amplifier BoardOnly the above package content, other products are not included.Note: Light reflection 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.

• Dynamic microphone, electret microphone universal, a broader purpose
• 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 use
• 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.