3
PRODUCT OVERVIEW
Front Panel
1. MP3 input using USB or SD card also FM radio control.
2. INPUT 1-4
The controls are used to adjust the gain of input 1-4 respectively. Adjust clockwise
to increase the volume while adjust counter clockwise to decrease the volume.
3. AUX
The control is used to adjust the gain of AUX. Adjust clockwise to increase the
volume while adjust counter clockwise to decrease the volume .
4. ECHO FUNCTION
It is used to control ECHO. When not using the ECHO function, please turn the
ECHO volume level to minimum to avoid noise.
5. BASS
Use the control to control the low frequency at the range of ±10dB. Turn clockwise
to boost and counter clockwise to attenuate the bass response. Tone is flat at
centre position.
6. TREBLE
Use the control to control the high frequency at the range of ±10dB. Turn clockwise
to boost and counter clockwise to attenuate the treble response. Tone is flat at
centre position.
7. MASTER
This control is used to adjust the overall output volume of the unit.
8. LED Indicators: Signal, Clip, Protect, Power.
MP3 Operation Instructions
Before performing the following operations, please connect a source via USB or SD
card. On connection the input will automatically switch or can be manually selected.
1. MODE button
Short press mode is to convert between USB/SD card and FM/AUX/BLUETOOTH.
In FM mode, you can listen to the radio. An external antenna will be required in
areas of low signal strength.
In BT mode, use your mobile phone, computer and other devices to search for
“VIRE BT” and then click on the connection, after pairing successfully you can play
music.
Note
that the above modes can only use one source at any one time
OPERATION
VMA120D
100V MIXER AMPLIFIER
