Mini Audio Amplifier
2
2. Panel Description
2.1 Front Panel
Figure 2- 1 Front Panel of MP-A250B
No. Name
Description
①
Power LED
Illuminate red when powered on
②
Input Selection Press to select any one of the 3 inputs, indicators will light
accordingly
Input 1~3 corresponds to audio sources connected to the 3
audio input ports separately;
1: L+R stereo audio
2: 3.5mm analog audio
3: optical audio
③
Control
Press to select the audio to be controlled, including LINE,
BASS, TREBLE
④
Volume Knob
Press to mute/unmute the audio
Note: after pressed the button to mute the audio, except
pressing it again to restore the audio at the same volume,
users can rotate the knob to enable audio output at
respective volume.
Rotate the knob to adjust volume, volume bars will change
accordingly
Clockwise Rotation: Volume up
Anticlockwise Rotation: Volume down
⑤
Volume Bars
Indicate real-time volume setting, 10 bars in total, no volume
bar will be lighted when the audio is muted
Operation Format
: “INPUT SEL” + “CONTROL” + “Volume Knob”
Example
: To adjust bass audio of input 3, select input 3 -> choose bass -> adjust the
volume knob.
CONTROL
INPUT SEL
1
2
3
LINE
BASS
VOLUME
