Analog Outputs; Line; Phones (7/8) - RME Audio Fireface UC User Manual

23. Analog Outputs

23.1 Line

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 Fireface UC
internally uses hi-quality electronic switches, which allow for a perfect adaptation of all outputs
to the three most often used studio levels.
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 Fireface UC lies between 9 and 15 dB,
according to the chosen reference level:
Reference
Hi Gain
+4 dBu
-10 dBV
The above levels are also found in our ADI-8 series of AD/DA converters, the Multiface, and
even in our Mic-Preamps QuadMic and OctaMic. Therefore all RME devices are fully compati-
ble to each other.

23.2 Phones (7/8)

Channels 7/8 of the Fireface are available on the front via one 1/4" unbalanced TRS jack (ste-
reo output). These channels use the same converters as the other line outputs, therefore offer
the same technical specifications.
These outputs are special low impedance types, ready to be used with headphones. But they
can also be used as high-quality (yet unbalanced) line outputs. To optimize this stereo output
for monitoring purposes, outputs 7/8 have their own 3-stage hardware-based reference level
circuitry, providing perfect pre-adjustment for the connected monitor speakers. The main vol-
ume control is then performed via TotalMix, either at the computer or directly at the unit (rotary
encoder, PH).
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.
42
0 dBFS @
+19 dBu
+13 dBu
+2 dBV
User's Guide Fireface UC © RME
Headroom
15 dB
9 dB
12 dB