Summit Audio 2BA-221 Mic and Line Preamplifier - Manual (Page 16)

Electrical Connections
16 Summit Audio, Inc.
Electrical
Connections
Input
Balanced 3-pin XLR
Pin 1 Ground
Pin 2 (+) Signal
Pin 3 (-) Signal
Balanced 1/4” jack
Sleeve - - Ground
Tip - - - - (+) Signal
Ring - - - -(-) Signal
Output
Balanced 1/4” jack Balanced 3-pin XLR
Sleeve - - Ground Pin 1 - - Ground
Tip - - - - (+) Signal Pin 2 - - (+) Signal
Ring - - - -(-) Signal Pin 3 - - (-) Signal