5
MD-4
1) Input Level Meter LEDs
Indicates input signal level in dBFS
2) Input Connector
XLR-3 accepts balanced or unbalanced micro-
phone or line-level sources; friction-fit, secure
connection
3) Phantom Power LED
When illuminated, indicates phantom power is
active
4) High-Pass Filter LED
When illuminated, indicates high-pass filter is
active
5) Select Button and SEL LED
Press to select an input for control at the Input
Control. The SEL LED illuminates to indicates
input selection. Hold to send input to headphone
monitor.
6) Phantom Power Control
Toggles 48 V phantom power for a selected input
7) High-Pass Filter Control
Toggles high-pass filter for a selected input
8) Gain Display
Numeric display indicates the gain setting, in dB,
for a selected input
9) Input Gain Control
Buttons to increase or decrease gain level of a
selected input. 0 dB is unity, 70 dB is maximum
10) Monitor Source Selection
Buttons to select input source available for
headphone monitoring. Selects among inputs or
outputs
11) Source Selection LEDs
Illuminates adjacent to the selected source for
headphone monitoring.
12) Monitor Meter
8-segment LED indicates the signal level in dBFS
of the selected monitor source
13) Headphone Level Control
Recessable rotary control for headphone level
control
14) Headphone Output Connector
1/4-inch headphone jack to connect headphones.
Wired tip-left, ring-right, sleeve-common ground
Front Panel Descriptions
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