Line Outputs; Headphones - RME Audio Multiface User Manual

25.2 Line Outputs

The eight short circuit protected, low impedance line outputs are available as 1/4" TRS jacks on
the back of the unit. The electronic output stage is built in a servo balanced design which han-
dles unbalanced (mono jacks) and balanced (stereo jacks) correctly.
To maintain an optimum level for devices connected to the analog outputs, the Multiface inter-
nally uses jumpers which allow to change the level of all 8 outputs individually. See chapter 35,
Changing the jumper settings.
As with the analog inputs, the analog output levels are defined to maintain a problem-free op-
eration with most other devices. The headroom of the Multiface lies between 9 and 15 dB, ac-
cording to the chosen reference level:
Reference
Hi Gain
+4 dBu
-10 dBV
With +4 dBu selected, the according headroom meets the latest EBU recommendations for
Broadcast usage. At -10 dBV a headroom of 12 dB is common practice, each mixing desk op-
erating at -10 dBV is able to send and receive much higher levels. Lo Gain is best suited for
professional users who prefer to work balanced and at highest levels. Lo Gain provides 15 dB
headroom at +4 dBu nominal level.

25.3 Headphones

Channels 19/20 of the Multiface are available on the front via one 1/4" unbalanced TRS jack
(stereo output). This output uses a hi-grade converter, therefore maintains a high signal to
noise ratio and low distortion (THD+N).
The output is a special low impedance type, ready to be used with headphones. But it can also
be used as high-quality (yet unbalanced) stereo Line output.
Like all other outputs, the level of channels 19/20 can also be controlled by TotalMix. The
monitoring perfomed on 19/20 of any input or playback channels (submix, like factory presets 1
and 2) is also controlled from TotalMix.
In case the output should operate
as line output, an adapter TRS plug
to RCA phono plugs, or TRS plug
to TS plugs is required.
The pin assignment follows interna-
tional standards. The left channel
is connected to the tip, the right
channel to the ring of the TRS
jack/plug.
0 dBFS @
+19 dBu
+13 dBu
+2 dBV
User's Guide HDSP System Multiface © RME
Headroom
15 dB
9 dB
12 dB
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