Specification:
Item Type: 4 Way Analog VU Meter
Model: VU4
Material: Aluminum Alloy
Input Voltage: 100-240V
Input and Output Port: , XLR (2 sets of XLR stereo)
Large Audio Input Voltage: 2.5Vrms (Over this voltage, it may damage the level meter)
Maximum Effective Audio Input Voltage: 1.1Vrms (the maximum voltage that can be measured, only full scale is displayed if it exceeds)
Monitoring Frequency Range: 20-20Khz (VU mode), 100-10Khz (EQ mode)
Input Impedance: 50KΩ, high impedance has less effect on input audio and can be ignored
Support Audio Source: Computer, mobile phone, decoder, CD, DVD, player, etc.
Display Brightness Adjustment: Support 4 level adjustment
Working Mode: VU standard mode, EQ spectrum mode.
Remote Control Function: Support
Hand Swing Range Gain: 3 levels of gain adjustable, -3dB, 0dB, +3dB (only adjust the hand swing range, does not affect the source audio )
Power Off Setting Data Saving: Support
Source: 1 set, 2 set of LINE IN or built-in microphone pickup
Working Voltage: 12VDC 1A
Remote Control Battery: 1.5V AAA x 2 (battery not included)

Package List:
1 x VU Meter
1 x Charger
1 x Remote Control
1 x User Manual

Note:
1. Do not connect the speaker output of the power amplifier to the VU4. This will burn the level meter.
2. If other power supply is used, it must be 12VDC direct current with a current of at least 1A.
3. In EQ mode, if the needle swing is too large. It is recommended to lower the volume of the player appropriately.
4. When the machine is out of the factory, it has been debugged in VU mode by default. GAIN=0dB, when the pointer of the meter points to the 0dB scale on the dial, the input audio level is 0.775RMS 1KHz. If you want other voltage standards, you can recalibrate yourself.