Upgrade DB level meter TA7318p preamplifier Vu meter driver board circuit DIY Kit
PCB size: 50 * 50 * 1.6mm,
This version of the sensitivity is adjustable, feel that the sensitivity is insufficient or too strong can be adjusted
Input can be connected to power amplifier, front stage, earphone, etc Just change the resistance to change the output gain control
Two meters can be connected to be responsible for the left and right channels
With meter backlight voltage output
The voltage output of the meter lamp is dc9v
Input support 9-20vac![1](https://ae01.alicdn.com/kf/H64fbf66d4a874d5e93b1fa7132bb1877l.jpg)
![2](https://ae01.alicdn.com/kf/H4c5c153098994fa2983f1d650deab172K.jpg)
![3](https://ae01.alicdn.com/kf/H0c7474dc5a134345a19a8513a027cd55q.jpg)
![4](https://ae01.alicdn.com/kf/H0f2413f58120471b922bd0eb30b1f3f6k.jpg)