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Based on price data from 6 merchants for "Shure A15AS Switchable Attenuator". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Meet your new best friend in the studio, the Shure A15AS Switchable Attenuator. This in-line attenuator is a lifesaver when dealing with hot signals that threaten to overload your mixer or recorder. Whether you're working with high-output microphones or line-level mixer outputs, the A15AS has got you covered.
It provides three attenuation levels - 15, 20, or 25 dB - which can be easily selected using the three-position slide switch. The A15AS features a 3-pin XLR female connector on the input side and a 3-pin XLR male connector on the output side, ensuring seamless integration with your existing gear.
One thing that sets the A15AS apart is its ability to allow phantom power to pass through from the mixer to the microphone. This makes it compatible with condenser microphones, expanding its versatility and usefulness in a studio setup.
Key Features:
- In-line attenuator for balanced mic/line-level signals
- 3-position slide switch for selecting 15, 20, or 25dB attenuation
- Phantom power pass-through capability
- 3-pin XLRF on the input side
- 3-pin XLRM on the output side
- Suitable for use with high-output microphones and line-level mixer outputs
Product specs
| Available since | October 2006 |
| Cable Tester | No |
| Level Meter | No |
| Speaker Tester | No |
| Software | No |
FAQs
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What is the purpose of the Shure A15AS Switchable Attenuator?
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The Shure A15AS Switchable Attenuator is designed to reduce the level of a balanced microphone or line-level signal by 15, 20, or 25 dB, helping prevent distortion in high-output situations.
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Does the Shure A15AS pass phantom power?
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Yes, the Shure A15AS Switchable Attenuator is designed to pass phantom power, making it compatible with condenser microphones and other devices requiring phantom power.
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How do I use the Shure A15AS with my audio equipment?
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Connect the Shure A15AS between your microphone or line-level device and the input of your audio equipment. Select the desired attenuation level to manage signal strength and prevent distortion.
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Can the Shure A15AS be used with any microphone?
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The Shure A15AS is compatible with most balanced XLR microphones, including dynamic and condenser types, as it passes phantom power necessary for condenser microphones.
Videos
Simon Peck
How Come Nobody Records Drums Like This?
How Come Nobody Records Drums Like This?
Simon Peck
Reviews
PROS
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Three selectable attenuation levels for precise control in various audio scenarios
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Robust construction with a solid, weighty feel for durability
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Effective in preventing signal overload and clipping with high-output devices
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Helps address RF interference issues in sensitive setups
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Ideal for interfacing with older or undocumented audio equipment
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Useful for both studio and live sound applications
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Maintains audio quality while managing hot signals
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Compatible with a wide range of audio equipment, enhancing versatility
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A reliable solution for sound engineers and videographers dealing with high SPL situations
CONS
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Lacks a -30 dB option, which could be ideal for some applications
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Some users find the -40 dB setting excessive for certain setups
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Occasional maintenance needed to ensure XLR socket stability
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Shure A15AS Switchable Attenuator.
Features and functionality
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The Shure A15AS is favored for its passive nature, providing a transparent solution without affecting the high-end sound, unlike API preamp pads.
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The A15AS is preferred for its variable attenuation capability, which makes it versatile in handling different signal levels without distortion.
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Use cases and applications
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For high-end preamps like API or SSL, it's recommended to place the attenuator after the preamp to hit the sweet spot without overloading A/D converters.
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The Shure A15AS is commonly carried by users for unexpected level issues from FOH mixers or press boxes, offering 15dB, 20dB, or 25dB attenuation options.
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Users often bring the A15AS as a backup to handle unexpectedly high speaker-level outputs during live events, ensuring protection of recording devices.
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Comparisons
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The API preamp pads are reported to cause a dark, dull sound due to their impact on dual transformers, contrary to the Shure A15AS, which maintains clarity.
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Some users construct custom 40dB and 50dB attenuators for more extreme signal reduction, suggesting A15AS might not suffice for all situations.
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User experience
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Owners of API preamps often avoid the built-in pad and opt for the Shure A15AS to preserve the preamp's character, especially in rigorous studio settings.
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Other
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The Shure A15AS is a typical solution for those avoiding built-in pads that alter preamp dynamics, particularly in API 512 and 312 models.
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It's noted that even with 32-bit float recording, maintaining healthy input levels is crucial to prevent issues with analog circuitry before AD conversion.
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5.0 out of 5
Based on 0 Reviews and 1 Rating
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
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