Behringer Ultra-DI DI20 User Manual

ULTRA-DI DI20

(1) 

CH. 1 IN input is used to connect 

unbalanced as well as balanced signal 

sources to channel 1.

(2) 

CH.1 OUT is the balanced output at mic 

level for channel 1.

(3) 

CH.2 IN input is used to connect 

unbalanced as well as balanced signal 

sources to channel 2. In Link mode 

(see (6)) this connector functions as 

output and sends the signal 

directly from channel 1.

(4) 

CH. 2 OUT is the balanced output at 

mic level for channel 2. In Link Mode 

(see (6)) this connector sends the signal 

directly from channel 1.

(5) 

The ATTENUATION dampening switch 

considerably increases the useful 

operating range of the DI20 from low 

signal levels of a high-impendence 

microphone or a guitar, all the way 

to the speaker connectors of a guitar 

amplifier (solid state). You can 

select between 20 and 40 dB worth 

of attenuation.

(6) 

The MODE switch lets you select the 

operating modes of the DI20. In the 

2-CH mode, two independent signals 

can be connected to channels 1 and 2 

respectively. In LINK mode the DI-box 

functions as a splitter: One signal can 

be fed to the channel 1 input and split 

into two balanced signals (at outputs 

1 and 2) and an unbalanced signal 

at CH.1 OUT. The un-balanced signal 

can, for example, be connected to an 

additional amplifier.

(7) 

The BATTERY switch activates the 

battery powered mode. Set the battery 

operating mode to OFF when your 

DI20 is connected to phantom power. 

While setting it to OFF, brief whistling 

noise may occur. This is completely 

normal and needs no further attention. 

However, you should not change the 

battery switch when you have an amp 

connected. For battery operation, 

you’ll only need a commercial 9 V 

battery of the 6LR61 type.