Vinyl turntable MM phono player board: Use the special amplifier chip of vinyl record player, the effect is the amplifier board of NE5532 and other op amps. The circuit is designed with frequency compensation circuit, the sound frequency band is more balanced, the input signal filter circuit has relatively lower noise, and the rectifier filter voltage regulator circuit. Working voltage: AC: AC dual 12v-16v Board size: 60mm x 45mm Overall height: about 23mm Note: The ground wire of the vinyl machine should be connected to the GND terminal of the power input terminal of the amplified version or the GND pad shown in the figure below, otherwise there may be interference. Material:PCB colour:black Package Contents: 2 x amplifying board 4 x lotus sockets with 300mm shielded wire Only the above package content, other products are not included. Note: Light 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.