Specification: Features: _x000D_1. 100% brand new and high quality _x000D_2. Small body and stable performance. _x000D_3. The PCB is a powerless dimming plate, the principle is that the audio signal is filtered directly through the blocking element to achieve the desired high and low sound. _x000D_4. Its main function is to make the input audio signal high-pitched or bass adjustment, and then the adjusted signal will be amplified by the amplifier board. _x000D_5. Suitable for audio, etc, _x000D_ _x000D_Specification: _x000D_Condition: 100% Brand New _x000D_Adjustable Items: Total Volume, High Volume, Low Volume _x000D_Channel: 3 Channels _x000D_Knob Spacing: 22.5mm _x000D_Socket: XH2.54 3P _x000D_Weight: Approx. 28g / 1.0oz _x000D_ _x000D_Package List: _x000D_1 * Pre-Amplifier Module Features: 1100% brand new and high quality. 2Small body and stable performance. 3The PCB is a powerless dimming plate, the principle is that the audio signal is filtered directly through the blocking element to achieve the desired high and low sound. 4Its main function is to make the input audio signal high-pitched or bass adjustment, and then the adjusted signal will be amplified by the amplifier board. 5Suitable for audio, etc, PackageList: