Behringer Micromon MA400 Leaflet

Thank you for showing your confidence in us by purchasing the BEHRINGER MICROMON 

MA400, a monitor headphone amplifier that is both flexible and compact. On your 

headphones, you can simultaneously listen to two audio signals:

one from a microphone

one from a mixer or a Hi-Fi unit

You can even emphasize one signal over the other. Hear yourself sing, or concentrate on the 

main audio program. Both are possible.

(2) (7)

(9)

(10)

(11)

(8)

(1)

(3)

(4)

(5)

(6)

Fig. 1: MA400 connectors and control elements

(1) 

 connector: 

To connect the power supply unit to the MA400, use the 12 V connector. 

Connecting the power supply unit to the mains automatically switches the MA400 on. 

To disconnect the unit from the mains, pull out the main cord plug.

(2) 

ON LED:

As soon as the unit is connected to the mains, the ON LED is illuminated.

(3) 

MIC INPUT connector:

To send a microphone signal to the MA400, you need an audio cable that includes 

XLR connectors. 
Plug:

one XLR connector into the MIC INPUT connector

the other XLR connector into the microphone

(4) 

MIC THRU connector:

If you want to route the microphone signal from the MA400 to a mixer, you need an 

audio cable that includes XLR connectors.
Plug:

one XLR connector into the MIC THRU connector

the other XLR connector into a mic input on the mixer

(5) 

GND LIFT button:

When you connect a mixer to the MA400, keep this button pushed out to maintain a 

ground connection to the mixer.
This connection prevents electrostatic charges from interfering with your 

audio signals.
However, if ground-loop hum interferes with your audio signals, you can break 

the ground connection between the MA400 and the mixer. To do this, push in the 

GND LIFT button.

(6) 

MONITOR INPUT connector:

To send a signal from a mixer or Hi-Fi unit to the MA400, you need an audio cable that 

includes ¼" connectors (unbalanced/stereo TRS or unbalanced/mono TS). 
Plug:

one ¼" connector into the MONITOR INPUT connector

the other ¼" connector into the AUX SEND of a mixer or, alternatively the output 

of a Hi-Fi unit

(7) 

¼" PHONES connector, 

(8) 

 1/8" PHONES connector: To connect headphones to the 

MA400, use the ¼" or, alternatively the 1/8" PHONES connector.

(9) 

MONO / STEREO switch:

To specify the type of mixer or Hi-Fi signal the MA400 receives, use this switch. 

If you plugged:

a TS connector into the MONITOR INPUT, the MA400 receives a mono signal. 

Push this switch to MONO.

a TRS connector into the MONITOR INPUT, the MA400 receives a stereo signal. 

Push this switch to STEREO.

(10) 

MIC LEVEL control:

To adjust the volume of the microphone signal, slowly turn this control toward 0 

(minimum volume) or, alternatively 10 (maximum volume).

(11) 

MON LEVEL control:

To adjust the volume of the mixer or Hi-Fi signal, slowly turn this control toward 0 

(minimum volume) or, alternatively 10 (maximum volume).

SERIAL NUMBER: To register your unit, use the serial number that is located on the bottom 

of the MA400.

For our current warranty terms, please refer to our website at http://behringer.com.
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