The Shure A15LA 50 dB In-Line Attenuator is a professional audio accessory designed to reduce line-level audio signals by 50 dB, allowing compatible line-level outputs to connect to microphone-level inputs without excessive signal overload.
Ideal for connecting the auxiliary output of a mixer, playback device, or other line-level audio source to the microphone input of a mixer or recorder, the Shure A15LA provides a convenient solution for audio signal level matching.
Featuring a female 3-pin XLR input and male 3-pin XLR output, the A15LA accommodates both balanced and unbalanced audio sources, making it a versatile accessory for professional recording, sound reinforcement, and installed audio systems.
50 dB Attenuation for Line-to-Microphone Level Matching
The Shure A15LA reduces incoming audio signal levels by 50 decibels, helping prevent overload when connecting equipment with different operating signal levels.
Line-level outputs typically produce significantly stronger signals than microphone inputs are designed to accept. Connecting these devices directly can result in unwanted distortion or input overload.
By inserting the A15LA into the signal path, installers can reduce the signal to a level more appropriate for a compatible microphone input.
Balanced and Unbalanced Audio Compatibility
The A15LA can be used with balanced or unbalanced audio sources, providing flexibility when connecting different types of professional audio equipment.
Its XLR in-line design makes it particularly useful for adapting line-level signals in recording systems, commercial audio installations, and other applications where a microphone-level input must receive a higher-level source.
Standard XLR Connections
The Shure A15LA features:
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Input: Female 3-pin XLR connector
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Output: Male 3-pin XLR connector
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Attenuation: Fixed 50 dB
The fixed attenuation design provides a straightforward signal-reduction solution without adjustable controls.
Shure A15LA Key Features
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Fixed 50 dB signal attenuation
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Designed for line-level to microphone-level signal matching
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Helps prevent microphone input overload from high-level audio sources
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Female 3-pin XLR input and male 3-pin XLR output
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Compatible with balanced and unbalanced audio sources
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Suitable for mixer, recorder, and playback equipment connections
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Convenient in-line configuration for professional audio signal paths
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Useful for recording, live sound, and commercial audio installations
Shure A15LA Technical Specifications
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Specification
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Details
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Manufacturer
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Shure
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Model
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A15LA
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Product Type
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In-Line Audio Attenuator
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Attenuation
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Fixed 50 dB
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Primary Application
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Line-Level to Microphone-Level Signal Matching
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Input Connector
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Female 3-Pin XLR
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Output Connector
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Male 3-Pin XLR
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Signal Compatibility
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Balanced or Unbalanced Sources
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Attenuation Control
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Fixed, Non-Switchable
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Common Applications
The Shure A15LA 50 dB Attenuator is ideal for:
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Connecting a mixer's auxiliary output to a microphone input
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Connecting playback equipment to a microphone-level recorder input
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Reducing line-level signals before they enter microphone preamplifiers
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Audio signal matching in professional recording systems
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Commercial sound and installed audio applications
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Live sound setups requiring fixed signal attenuation
Why Buy the Shure A15LA from Audio Supply?
Audio Supply carries professional Shure audio accessories, signal management equipment, and installation products for commercial sound, recording, and live audio applications.
The Shure A15LA 50 dB In-Line Attenuator provides a simple, effective solution for connecting compatible line-level audio equipment to microphone-level inputs.
