2x Panel VU Meter Warm Back Light Recording & Audio Level Amp with Driver Board

Description: 1. AC / DC 12V-15V power supply for the drive board. (It is recommended to use a separate power transformer or a separate power supply for the windings. The backlight current of the driver board is 45MA when not in use). 2. L, GND, R: This is the driver board. The low-level signal input terminals for connection are CD player, computer sound card, first stage and other audio signal source devices, respectively, wiring L, GND, RW : Left, the right channel can. 3. R1 and R2 two adjustable resistor drive boards can control the size of the hand swing. 4. Backlight DC12V power meter is used for the backlight driver board after rectifying the regulator. 5. Pay attention to the positive and negative head interface. To extend the life of the backlight bulb

The following methods can be used: 1. The brightness of the backlight can greatly extend the life under the condition that the operating voltage is reduced. 2. AC power supply 10~12V, series of 10 euros to 50 euros current limiting resistors, reducing the impact on the filament boot.

Package includes: 2 x VU panel meter, 1 drive module, 1 x cable