Passive tone board Preamp Board Audio front stage equalizer Pre amplifier Tone Control Preamplifier pcb assembly customize

This tuning version for the passive tuning board, the main function of the input audio signal for high and low tone adjustment, and then sent to the amplifier board to enlarge
The principle of the product is the audio signal through the resistance element directly filtered through the filter to get the desired bass, the tone board does not need power supply, but after processing the volume will become much smaller
 
The main parameters: passive tuning board
Adjustable items: total volume, treble, bass
Number of channels: two channels
Knob spacing: 22.5MM
Socket Type: XH2.54-3P
Size: 56 * 28MM
 

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