XLR 3-Pin Pinout Diagram for Balanced Audio Wiring
3-pin circular connector
Standards: IEC 61076-2-103
What is the XLR 3-Pin pinout?
The XLR 3-Pin Audio Connector has 3 pins. Pin 1 is GND (ground). Pin 2 is HOT (data). Pin 3 is COLD (data).
Standards: IEC 61076-2-103
Pin Assignment Table
| Pin | Signal | Type | Description |
|---|---|---|---|
| 1 | GND | ground | Chassis Ground (Cable Shield) |
| 2 | HOT | data | Positive / Hot (+) |
| 3 | COLD | data | Negative / Cold (-) |
Signal Types
Common Applications
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Browse the full pinout library →The XLR 3-Pin connector has 3 pins: Pin 1 (GND), Pin 2 (HOT), and Pin 3 (COLD). Common in Microphones and Audio Interfaces.
XLR 3-Pin Wiring Guide
The XLR connector is the industry standard for balanced audio. Pin 1 is always Ground/Shield, Pin 2 is Hot (+), and Pin 3 is Cold (-).
Wiring Tips & Best Practices
Always connect the cable shield to Pin 1. Do NOT connect Pin 1 to the connector shell lug unless specifically required for chassis grounding, as this can cause ground loops.
Why Use Interactive Diagrams?
- Accuracy: Hover over pins to see exact signal names and descriptions
- Clarity: Color-coded by signal type (power, ground, data)
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