Hosa GXM-133 — RCA to XLR Male Adapter
GXM-133 Overview
The Hosa GXM-133 is a compact signal adapter designed to interface a phono (RCA) source with an XLR male input, converting the connection for use in professional audio signal chains. The adapter grounds XLR pin 3, resulting in an unbalanced signal path suitable for connecting consumer or prosumer RCA-equipped sources to XLR-equipped equipment. It is well suited for audio engineers, system integrators, and venue technicians who need a reliable, no-frills format conversion in the field or during installation.
The GXM-133 provides a straightforward plug-and-play solution without the need for additional cabling, keeping signal paths clean and patch bays uncluttered.
Key Features
- RCA to XLR3M Format Conversion — adapts a phono plug source directly to an XLR male input without additional cabling
- Pin 3 Grounded — XLR pin 3 is grounded, producing an unbalanced signal compatible with standard XLR inputs
- Compact Form Factor — inline adapter design minimizes rack or stage clutter and is easy to carry as a spare
- Broad Application — suitable for connecting consumer audio sources, DJ equipment, or playback devices to professional XLR inputs
- Hosa Build Quality — constructed to Hosa’s professional adapter standards for reliable, repeatable connections
Connectivity & I/O
- Input: RCA (phono) female
- Output: XLR3M (3-pin XLR male)

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