The Hosa GMS-274 XLR Microphone On/Off Switch is a compact, in-line adapter designed to add convenient on/off control to a dynamic microphone that does not have a built-in switch. Featuring a 3-pin XLR female connector on one end and a 3-pin XLR male connector on the other, the GMS-274 allows users to mute and unmute a microphone without disconnecting the audio cable.
Ideal for karaoke, public speaking, presentations, and live sound applications, the Hosa GMS-274 provides a practical solution for situations where microphones are frequently passed between speakers or performers.
Its compact barrel-style design fits directly into a standard XLR microphone connection, making it easy to incorporate into an existing audio system without purchasing a new microphone.
Convenient On/Off Control for Dynamic Microphones
Many professional dynamic microphones do not include an integrated on/off switch. While this arrangement works well in professionally operated sound systems, it can be inconvenient when users need direct control over their microphones.
The Hosa GMS-274 solves this problem by adding an accessible switch directly into the microphone signal path.
This is particularly useful for:
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Karaoke systems: Allow singers to mute their microphones between performances.
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Public speaking: Give presenters direct control over microphone audio.
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Churches and houses of worship: Provide convenient microphone muting during announcements and presentations.
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Conference rooms: Allow speakers to turn their microphones on and off as needed.
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Live events: Add switching capability to compatible dynamic microphones without built-in controls.
Standard 3-Pin XLR Connections
The GMS-274 features standard professional XLR connectors:
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XLR3F (Female): Connects to the microphone's XLR output.
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XLR3M (Male): Connects to the microphone cable or corresponding XLR input.
The adapter can be installed between a compatible dynamic microphone and its XLR cable.
No batteries or external power supply are required for the switching mechanism.
Compact In-Line Design
The Hosa GMS-274 uses a compact barrel-style housing that makes it easy to add switching functionality without introducing a separate control box.
Its straightforward design is particularly useful for portable PA systems, presentation equipment, and shared-microphone installations.
Users can operate the switch directly instead of reaching for a mixer or disconnecting the microphone.
Hosa GMS-274 Key Features
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In-line microphone on/off switch for compatible dynamic microphones.
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XLR3F to XLR3M connectors for standard balanced microphone connections.
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Convenient microphone muting without unplugging the XLR cable.
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Compact barrel-style construction for easy integration.
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No batteries required for operation.
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Ideal for karaoke and public speaking where microphones are shared.
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Simple installation between a microphone and its XLR cable.
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Practical accessory for live sound, presentations, and commercial audio applications.
Hosa GMS-274 Technical Specifications
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Specification
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Details
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Manufacturer
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Hosa Technology
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Model
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GMS-274
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Product Type
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In-Line Microphone On/Off Switch
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Input Connector
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3-Pin XLR Female (XLR3F)
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Output Connector
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3-Pin XLR Male (XLR3M)
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Switching Function
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Microphone Signal On/Off
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Recommended Application
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Dynamic Microphones
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Audio Connection
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Balanced XLR
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External Power Required
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No
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Configuration
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In-Line Barrel Adapter
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How Does the Hosa GMS-274 Work?
The GMS-274 is installed in the microphone signal path.
When the switch is ON: The microphone signal passes through the adapter to the connected audio equipment.
When the switch is OFF: The adapter mutes the microphone signal.
This provides convenient microphone control without requiring the user to disconnect the microphone or adjust the mixing console.
Microphone Compatibility
The Hosa GMS-274 is designed primarily for dynamic microphones.
Important: This adapter should not be assumed compatible with every phantom-powered condenser microphone. Verify microphone and system compatibility before use.
The GMS-274 is an audio signal switch, not a device for switching AC electrical power.
Why Buy the Hosa GMS-274 from Audio Supply?
At Audio Supply, we specialize in professional audio equipment and accessories for live sound, commercial installations, schools, houses of worship, and businesses.
The Hosa GMS-274 offers an economical way to add convenient on/off control to an existing compatible dynamic microphone.
Whether you're setting up a karaoke system, equipping a presentation space, or replacing a microphone accessory, Audio Supply can help you find the right equipment for your application.
Need a Compatible XLR Microphone Cable?
The Hosa GMS-274 connects to standard 3-pin XLR microphone cables and is designed to provide convenient on/off control for compatible dynamic microphones.
Contact Audio Supply for assistance selecting the right XLR microphone cable, dynamic microphone, or audio accessory for your system.
