TRUE Systems PRECISION 8 User Manual
Page 9

Precision 8
OPERATION MANUAL
9
The DB25 and TRS output connectors are not electronically isolated. Therefore, if you 
chose to connect either one of the output connectors to an unbalanced input, the other 
connector will automatically be unbalanced. When connecting an output of the 
Precision 8 to an unbalanced input, you must connect the negative signal pin (pin 3 of 
the XLR or “ring” of the TRS) to the shield. Failure to do this will result in audible 
distortion. 
 
The wiring configuration used for the output connectors on the 
Precision 8 is:
 
For TRS: 
•
Tip is positive (+)
•
Ring is negative (-)
•
Sleeve is shield
 
 
 
 
 
 
 
 
 
 
 
For DB25: 
This output connector is wired 
according to the Tascam
8-channel
analog wiring configuration. DO NOT
USE TDIF CABLES.
 
Microphone Connection: 
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
MIC 6
MIC 7
MIC 8
Direct In
1
Direct In
2
MS
PIN 2 +
PIN 3 -
3
4
 
 
Microphone connection is made to standard XLR receptacles on the rear panel. The 
wiring configuration used for the microphone connectors on the 
Precision 8 is:
•
Pin 2 is positive (+)
•
Pin 3 is negative (-)
•
Pin 1 is shield
 
 
 
 
