Setup guide
Chapter 10: Making Studio Connections 83
2 If you are using any DI inputs, press the 
Mic/DI switch (located on the top panel of the 
003, and on the front panel of the 003 Rack) for 
the corresponding input so that it is in the DI 
(lit) position.
3 If you are using any of the Inputs 5–8, set ei-
ther a –10 dBV or +4 dBu operating level for the 
corresponding input using the Operating Level 
switch (located on the back panel). For informa-
tion on the appropriate operating level for your 
input device, see the manufacturer’s specifica-
tions.
4 Set your instrument’s volume to its optimal 
level. For example, the optimal level for most 
keyboards is between 80% and 100% of maxi-
mum volume.
5 When Pro Tools is launched and the input is 
routed to a Pro Tools track, if you are using the 
DI Inputs you can adjust the input level with the 
Input Gain Control knob.
To use a keyboard or mixer with 003 Rack+:
1 On the back of the 003 Rack+, plug your key-
board, mixer, or other audio source into any of 
the Line/ DI inputs.
Mic/DI switches (located on the top panel of 003, and 
front panel of 003 Rack)
For line-level devices, the Input Gain Control 
knob should be turned down all the way.
003 and 003 Rack’s four Analog Inputs
Input 1-4 Gain control
Mic/DI and HPF switches for Inputs 1–4
Operating Level switches 
for Analog Inputs 5-8
Stereo keyboard plugged into Line/DI inputs 1–2










