Makerfire-NE5532-Volume-Tone-Control-Board-PreAmp-DIY-For-Audio-Amplifier

Specification:
This tone control board contains 10 times preamp and soprano, alto, bass volume control
NE5532 OP-AMP chips
High quality mini potentiometer
1% tolerance metal film resistors
Philips CBB capacitors
Reasonable layout design, low noise
Power supply: Dual 15V AC
PCB size: 105 x 54 x 1.6mm

As to the noise, please pay attention to the following:
If the input signal may be too strong, there will be distortion. please change the R2 and R3 into the 15K and 22K. To improve the signal / noise ratio, all signal input and output lines must be shielded cable, the shield should be connected to the ground, so as not to lead to induction noise. As to the 4 potentiometers, please use wires to connect all metal parts to the ground, the terminal GND is on the right side of the volume potentiometer.
The wire potentiometer available supporting screws to tighten. Please make sure there is only one point connected to the GND and all wires can connect together and connect to one point and then connected to the GND, if you use multi-point grounding, this may easily lead to noise. Also please stay away from the power transformer, to get the smallest noise, it is better that if you can shielded transformer.

Note:
Components DIY kit only, you need to weld and install it by yourself.
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Package Including
1 x NE5532 board kit