Setup guide
Chapter 10: Making Studio Connections 81
Connecting Instruments to 
003 Family Interfaces
The 1/4-inch inputs on 003 family interfaces 
support both higher output “line-level” devices 
and low-output instruments (such as electric or 
acoustic guitars). This section contains exam-
ples for connecting both types to your 003 fam-
ily interface.
Instruments such as electric guitar or electric 
bass usually have a lower level of output than in-
struments and electronic audio sources such as 
mixers, samplers, keyboards, turntables, and 
synthesizers. 
The higher level of output is commonly called 
“line-level” and the instruments that produce 
these higher levels are called line-level devices.
On 003 and 003 Rack, DI Inputs 1–4 support 
low-level instruments and line-level instru-
ments. Analog Inputs 5–8 support line-level in-
struments only.
On the 003 Rack+, Line/DI inputs 1-8 (as well as 
the front panel DI 1 input) support low-level in-
struments and line-level instruments. 
To use a guitar with the 003 family interface:
1 Do one of the following, depending on your 
device:
• On the back of the 003 or 003 Rack, plug 
your guitar cable into one of the DI inputs. 
From the back, the inputs are numbered 
left to right, so DI Input 1 is the leftmost in-
put.
– or –
• If using the 003 Rack+, plug your guitar ca-
ble into the front panel DI 1 1/4-inch input 
(or into a rear-panel 1/4-inch Line/DI in-
put).
003 and 003 Rack with 1/4-inch cable plugged into DI 
Input 1
Line/Inst Input 1










