Avid HD OMNI Preamp, I/O, and Monitoring Pro Tools HD Series Interface - Manual (Page 15)

Chapter 2: HD OMNI Overview 11
HD OMNI Back Panel
The HD OMNI has the following back panel features:
Analog Inputs
HD OMNI provides up to four channels of si-
multaneous analog inputs to Pro Tools using
24-bit A/D converters that support sample rates
up to 192 kHz. Channels 1 and 2 can be from
the front panel inputs (XLR microphone or
1/4-inch TRS Instrument), from the back panel
MICROPHONE (XLR) 1 and 2 Inputs, or from
the back panel LINE IN (1/4-inch TRS) 1 and 2
Inputs. Channels 3 and 4 are always from the
back panel LINE IN 3 and 4 Inputs.
MICROPHONE 1 and 2 Inputs
HD OMNI provides two microphone inputs
(XLR) on the back panel. These two inputs are
routed through the preamps, which can be con-
trolled from the front panel.
MICROPHONE 1 and 2 can be used for input
when the Input Type is set to MIC on the front
panel. If the Input Type is set to MIC on the
front panel, and a microphone connection is
made on the front panel Channel 1 or 2 inputs,
the corresponding back panel input is bypassed.
SEND and RTN 1 and 2
HD OMNI provides two discrete hardware sends
and returns. The selected inputs (MIC, LINE, or
INST) on Channels 1 and 2 can be routed
through the hardware sends and returns avail-
able on the back panel. This lets you use your fa-
vorite outboard gear (such as compressors or
EQs) at the signal input stage, after the pad, pre-
amp, and high-pass filter, but before the Soft
Clip or Curv limiter circuits and the analog-to-
digital converter.
Send and Return 1 inserts on Channel 1 and
Send and Return 2 inserts on Channel 2. Select
(or deselect) INSERT on the front panel to en-
able (or disable) the hardware inserts. Note that
the sends are always active.
LINE IN 1–4
HD OMNI provides four line level 1/4-inch TRS
inputs. LINE IN 1 and 2 can only be used for in-
put when the Input Type is set to LINE on the
front panel.
HD OMNI Back Panel
Back panel analog inputs