SHURE SHA15AS Switchable Line Attenuator Selectable Mic

( Brand: Shure ), ( Manufacturer Part Number: SHA15AS ), ( Model: SHURE-A15AS ), ( Part Type: Attenuator ), ( Form Factor: Microphone Accessories )

Review SHURE A15as Switchable In line Attenuator Or Db Of Selectable Mic

The **Shure SHA15/A15 Switchable In-Line Attenuator** is a versatile and professional-grade audio accessory designed to deliver precise control over microphone signal levels in demanding live sound, studio, or broadcast environments. This compact yet robust device offers three selectable attenuation settings **15dB, 20dB, and 25dB** allowing engineers and performers to fine-tune input levels with ease, whether working with dynamic, condenser, or ribbon microphones. The **SHA15** variant features a **spring-loaded pushbutton switch**, ensuring quick and intuitive adjustments without the need to remove the microphone from the stand or handpiece, while the **A15** model incorporates a **foot-switch compatible** design, enabling hands-free operation for maximum convenience during performances or extended recording sessions. Constructed from high-quality materials, the attenuator is built to withstand the rigors of frequent use, with a durable metal housing that protects internal circuitry while maintaining a sleek, professional appearance. Its **3.5mm TRS (stereo) connector** ensures a secure and interference-free connection to audio interfaces, mixers, or preamps, making it an ideal solution for both live sound reinforcement and studio applications. Whether used to prevent clipping in high-gain setups, reduce proximity effect in close-miking scenarios, or simply optimize signal levels for consistent performance, the SHA15/A15 provides the flexibility and reliability that professionals demand. Its compact form factor and seamless integration with Shure s premium microphone lineup make it an essential tool for anyone seeking precise control over their audio signal chain.

The **Shure SM15A/SM15AS** is a versatile microphone designed for professional use, featuring a built-in **inline attenuator** that allows you to switch between **15dB, 20dB, and 25dB attenuation** for optimal gain staging. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Shure SM15A/SM15AS**

1. **Adjustable Attenuation for Flexible Gain Staging**

The **switchable inline attenuator** (15dB, 20dB, 25dB) allows users to fine-tune input levels without needing external pads or trimming the signal. This is particularly useful in environments with varying sound levels, such as live performances, podcasting, or studio recording. It helps prevent clipping and ensures a cleaner signal before it reaches the preamp.

2. **High-Quality Condenser Design**

The SM15A is a **large-diaphragm condenser microphone**, known for its **warm, detailed sound** with a **smooth frequency response** (40Hz 20kHz). It excels in capturing vocals, acoustic instruments, and ambient sound with clarity and depth.

3. **Low Self-Noise and High Sensitivity**

Shure s condenser mics are designed with **low self-noise** (typically **12dB-A**), making them ideal for quiet recordings where background noise must be minimized. The **high sensitivity** ensures that even soft sounds are captured with precision.

4. **Durable and Rugged Construction**

The SM15A/SM15AS features a **metal body**, making it **more robust** than many plastic-bodied mics. It is well-suited for **live performances, touring, or studio use** where durability is important.

5. **XLR Output with Balanced Signal**

The **XLR connection** provides a **balanced output**, reducing noise and interference, which is crucial for professional audio setups.

6. **Versatile Polar Pattern (Cardioid)**

Like most Shure condenser mics, the SM15A has a **cardioid polar pattern**, which helps **reject off-axis noise** and keeps the focus on the desired sound source.

7. **Good for Broadcast, Podcasting, and Studio Work**

The SM15A is widely used in **broadcast, podcasting, and studio recording** due to its **consistent performance** and **professional-grade build**.

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### **Cons of the Shure SM15A/SM15AS**

1. **Requires Phantom Power (48V)**

As a condenser microphone, the SM15A **needs phantom power** (typically **48V**) to operate. This means it cannot be used with battery-powered or non-phantom-powered interfaces without an adapter.

2. **No Built-in Pop Filter or Windshield**

Unlike some dynamic mics (e.g., Shure SM58), the SM15A does **not come with a pop filter or windshield**. Users must purchase these separately if needed for vocal recording.

3. **Slightly Bulkier Than Dynamic Mics**

Condenser mics are generally **larger and more delicate** than dynamic mics like the SM58. While the SM15A is sturdy, it may not be as rugged for **rough handling** in live environments.

4. **Price Point**

The SM15A/SM15AS is **more expensive** than many dynamic mics (e.g., SM58, SM57). While it offers superior sound quality, budget-conscious users may find alternatives like the **Audio-Technica AT2020** (a cheaper condenser) or **Shure SM58** (a dynamic alternative) more appealing.

5. **No Built-in Attenuation in All Models (SM15A vs. SM15AS)**

- The **SM15A** does **not** have the inline attenuator.

- The **SM15AS** includes it, but if you don t need it, you might prefer the slightly cheaper **SM15A** (though the difference is minimal).

6. **Not Ideal for Loud Sound Sources**

While the attenuator helps, the SM15A is still a **condenser mic**, meaning it can **overload easily** if exposed to **very loud sounds** (e.g., drums, loud instruments). A **dynamic mic** (like the SM57) would be better for such applications.

7. **Requires Proper Placement for Best Results**

Condenser mics are **directional but sensitive to proximity effects**. Placement matters too close can cause **boominess**, while too far may lose detail.

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### **Conclusion**

The **Shure SM15A/SM15AS** is an **excellent choice** for professionals who need **high-quality condenser sound with adjustable gain staging**. Its **inline attenuator** makes it particularly useful in **live sound, podcasting, and studio recording** where signal control is crucial. The **low noise, smooth frequency response, and durable build** ensure reliable performance in demanding environments.

- Need a **budget-friendly** option (dynamic mics like the SM58 are cheaper).

- Require **extreme durability** (dynamic mics handle rough use better).

- Work with **very loud sound sources** (dynamic mics are more robust).

- Do not need **phantom power** (though most professional setups provide it).

If **sound quality, flexibility, and professional-grade performance** are your priorities, the **SM15AS** (with attenuator) is a **strong recommendation**. If you re on a tighter budget or need a more rugged mic, alternatives like the **Shure SM58 (dynamic)** or **Audio-Technica AT2020 (condenser without attenuator)** may be worth considering.

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### **Final Recommendation**

You need **high-end condenser sound** for **vocals, podcasting, or studio recording**.

You require **adjustable attenuation** (15dB, 20dB, 25dB) for **flexible gain staging**.

You re working in a **professional environment** where **low noise and clarity** are essential.

You have **phantom power** available (most professional interfaces provide this).

You need a **more rugged or budget-friendly** option (e.g., **Shure SM58**).

You work with **extremely loud sources** (e.g., drums, live instruments).

You don t need **condenser-level detail** and prefer **dynamic mics** for durability.

**Best for:** Podcasters, broadcast journalists, studio vocalists, and professionals who prioritize **sound quality and gain control**.

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part #: sha15as prices

• $23.95-$35.99

specifications micwisys:

• brand: Shure
• mpn: Sha15as
• model: Shure-a15as
• part type: Attenuator
• form factor: Microphone Accessories

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• # reviews: 806
• city: Huntington Beach, California
• rating: 99.5%

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• Musical Instruments Gear > Pro Audio Equipment > Microphones Wireless Systems
• condition: Used

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