Mackie MAINSTREAM - XLR and 1;4 Combo Input Jack (Channel 1)

MAINSTREAM COMPLETE LIVE STREAMING & VIDEO CAPTURE INTERFACE WITH PROGRAMMABLE CONTROL KEYS
8
XLR and /4" Combo Input Jack [Channel ]
This is a female XLR connector that accepts a mic or line-level input from almost any type of source. Professional ribbon,
dynamic, and condenser mics all sound excellent through this input. The mic / line input will handle any kind of level
you can toss at them, without overloading.
The input level is controlled via the mic level control knob, located on the front of MainStream. [It’s the big one located
on the lef-hand side of MainStream; for reference, the silkscreen printed underneath the knob displays a microphone
and headset.].
They are wired as follows, according to standards specified by the AES (Audio Engineering Society).
XLR Balanced Wiring:
Pin  = Shield (ground)
Pin 2 = Positive (+ or hot)
Pin 3 = Negative (– or cold)
In addition to accepting a balanced mic signal using an XLR connector, this input channel may also accept a /4" line-level
signal driven by balanced or unbalanced sources.
To connect balanced lines to this input, use a /4" Tip-Ring-Sleeve (TRS) plug. “TRS” stands for Tip-Ring-Sleeve, the three
connection points available on a stereo /4" or balanced phone jack or plug. TRS jacks and plugs are used for balanced signals
and are wired as follows:
/4" TRS Balanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
Ring = Cold (–)
To connect unbalanced lines to this input, use a /4" mono (TS) phone plug, wired as follows:
/4" TS Unbalanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
While channel  ties this combo jack and the /8" TRRS jack above it, they will not work simultaneously.
The XLR input takes precedence.
2
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
SLEEVE
TIPSLEEVE
TIP
RING
RING
TIP
SLEEVERING
SLEEVE
TIP
TIPSLEEVE
TIP
SLEEVE