Setup guide
003 Family Setup Guide60
Analog Inputs
Mic Inputs 1–4
These are balanced, three-conductor XLR con-
nectors for microphone-level analog inputs. 
Gain is controlled by the corresponding Input 
Gain Control knob (located on the top panel of 
003, and on the front panel of 003 Rack). The 
source (Mic, Line, or DI) is chosen using the 
Mic/DI switch.
DI Inputs 1–4
The DI (“Direct Inject” or “Direct Interface”) In-
puts are balanced connectors for guitars and 
other instrument level sources that support 
1/4-inch TS connections. Operating levels for 
these inputs are fixed at +4 dBu.
Gain is controlled by the corresponding Input 
Gain knob (located on the top panel of 003, and 
on the front panel of 003 Rack). The source 
(Mic, Line, or DI) is chosen using the Mic/DI 
switch.
Phantom Power Switches
These switches apply 48V phantom power to 
Mic Inputs 1–2 and Mic Inputs 3–4 channel 
pairs, respectively. Enable these switches for mi-
crophones that require phantom power to oper-
ate.
Figure 3. 003 back panel
Mic and DI Inputs 1-4
Analog Inputs 5-8 (and Level switch
Kensington Lock port
Link indicator
Analog Outputs 1-8
Main and Alt
FireWire ports
Monitor Outputs
Aux In
MIDI In
MIDI Outs
Footswitch
Optical I/O
S/PDIF I/O
Word Clock
AC power connector
Power switch
(and Phantom Power switches)
The XLR connectors on Inputs 1–4 are 
wired specifically to match the impedance 
of microphones. Do not use these XLR con-
nectors for line inputs; use the 1/4-inch con-
nectors instead. 
For more information, see “Phantom 
Power” on page 78.










