Mini Audio Amplifier
7
4. System Control
4.1 Front Panel Button Control
Front panel buttons provides direct audio control including input source selection and
audio effect adjustment.
Figure 4- 1 Front Panel Buttons
Operation Format
: Input Sel + C Volume Knob (indicators and volume bar will
display real-time operation)
Input selection (area
①
):
Press button
INPUT SEL
to switch among the 3 inputs cyclely, relative LED will
light to indicate real-time selection. There are 3 selectable audio sources,
corresponding to the 3 audio input ports on the rear panel separately.
1: L+R stereo audio
2: 3.5mm analog audio
3: optical audio
Control (EQ management) (area
②
):
Including LINE, BASS and TREBLE, press button
Control
to switch among the 3
inputs circularly, relative LED will light to indicate real-time selection.
Volume Knob (area
③
):
Clockwise Rotation: Volume up
Anticlockwise Rotation: Volume down
About the Volume Bar (area
④
):
Volume bar indicates real-time volume setting, 10 bars in total, the higher the volume is,
the more bars will be illuminated. In different EQ control, volume bar tend to act
differently:
LINE: Line volume can be 0~60, one more volume bar will light when the volume is
turned up by 6.
BASS: bass volume can be 0~10
TREBLE: treble volume can be 0~10
