SHURE SHURE-A120S Momentary Line Switch Switch.

( Brand: Shure ), ( Manufacturer Part Number: SHURE-A120S ), ( Model: SHURE A120S ), ( Form Factor: In Line Switch ), ( Color: Black )

Review SHURE Original Momentary In Line Switch. Used

The **Shure A120S Momentary Line Switch** is a robust, professional-grade audio control solution designed to deliver seamless and reliable operation in demanding live sound, broadcast, and studio environments. Engineered with Shure s signature precision and durability, this compact yet powerful switch offers a momentary-action mechanism that ensures smooth, repeatable engagement with minimal wear over time. Its robust construction features a high-quality metal housing that resists bending, corrosion, and mechanical stress, making it ideal for both stationary and portable setups where reliability is paramount. The switch is equipped with a **gold-plated, low-resistance contact interface**, ensuring optimal signal integrity and reducing the risk of oxidation or degradation over extended use, which is critical for maintaining pristine audio quality in professional applications. Whether integrated into a mixing console, installed in a control panel, or used as part of a custom audio routing system, the A120S provides a tactile and responsive feel with a clean, audible click, confirming each activation without the need for visual feedback. Its **momentary action** design allows for quick, one-time engagement perfect for triggering effects, muting channels, or toggling between audio sources while its **normally open (NO) configuration** ensures safety and predictability in routing signals. The switch s compact footprint and versatile mounting options, including panel-mount or direct-wire configurations, make it adaptable to a wide range of installations, from touring sound systems to fixed studio setups. Built to withstand the rigors of frequent use, the A120S is backed by Shure s reputation for quality, offering a dependable solution for audio professionals who demand both performance and longevity in their equipment.

The Shure A120S Momentary Line Switch is a versatile and widely used audio accessory, particularly for live sound applications, recording studios, and broadcast environments. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Shure A120S Momentary Line Switch**

1. **Reliability and Durability**

The A120S is built to withstand heavy use in demanding environments. Shure is known for high-quality construction, and this switch is no exception. It features a robust metal housing and a durable momentary action mechanism, making it resistant to wear and tear over time. Many users report years of trouble-free operation, even in live performance settings where switches are frequently engaged.

2. **Momentary Action with No Latching**

The momentary design means the switch only completes the circuit while physically pressed, which is ideal for scenarios where you want to trigger a signal temporarily (e.g., muting a track, sending a cue, or bypassing an effect). This prevents accidental engagement and allows for precise control, which is critical in live sound or studio environments where quick adjustments are necessary.

3. **Versatile Wiring Options**

The A120S comes with a variety of wiring options, including standard 1/4-inch TRS (tip-ring-sleeve) and XLR connections. This flexibility allows it to integrate seamlessly into different setups, whether you're working with microphones, instruments, or line-level signals. The included wiring diagrams and clear labeling make it accessible for both beginners and experienced users.

4. **Compact and Portable**

The switch is small and lightweight, making it easy to carry in a gig bag or rack mount in a studio. Its compact size doesn t compromise functionality, and it can be mounted on a pedalboard, rack, or even a small panel for easy access during performances or recordings.

5. **Low Latency**

Since it s a simple mechanical switch, there s minimal signal delay or processing, which is important for time-sensitive applications like live mixing or triggering effects. This makes it a preferred choice over digital or software-based solutions in many scenarios.

6. **Affordable Price**

Compared to other high-end audio switches or digital alternatives, the A120S offers excellent value for money. Its cost is reasonable given its reliability and versatility, making it a practical choice for both professionals and hobbyists.

7. **Easy to Install and Use**

The switch is straightforward to wire and integrate into existing setups. Shure provides clear instructions, and the components are well-labeled, reducing the risk of errors during installation. Once set up, it operates intuitively with a satisfying tactile response.

8. **Compatibility with Various Audio Systems**

It works with a wide range of audio interfaces, mixers, and equipment due to its standard connections. Whether you're using it to mute a track in a DAW, trigger a cue in a live sound setup, or bypass an effect pedal, the A120S adapts well to different workflows.

9. **No Power Required**

As a passive switch, it doesn t require batteries or external power, which simplifies setup and reduces potential points of failure. This also means it won t introduce noise or interference into your signal.

10. **Positive User Feedback**

The A120S has earned a strong reputation among audio professionals and enthusiasts. Many reviews highlight its consistency, ease of use, and the fact that it holds up under frequent use. This community endorsement adds to its appeal as a trusted tool.

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### **Cons of the Shure A120S Momentary Line Switch**

1. **No Latching Functionality**

The momentary design means the switch returns to its default state as soon as you release it. While this is useful for temporary actions, it can be frustrating if you need a switch that stays engaged until manually turned off (e.g., for a sustained mute or effect bypass). If latching is required, you d need to pair it with another switch or use a different model like the Shure A120L (latching version).

2. **Limited to Basic Switching Functions**

The A120S is a simple on/off switch and doesn t offer additional features like variable resistance, tone controls, or digital integration. If you need more complex signal manipulation (e.g., volume faders, tone shaping, or MIDI control), you d need to supplement it with other devices.

3. **Wiring Can Be Intimidating for Beginners**

While Shure provides wiring diagrams, soldering or crimping connections can be daunting for those without experience. Mistakes during wiring could lead to short circuits or signal issues. However, this is a common challenge with any DIY audio project and not unique to the A120S.

4. **No Built-in Protection Against Overload**

Like most passive switches, the A120S doesn t include built-in protection against power surges or overloads. In high-risk environments (e.g., live venues with unstable power), additional protection like fuses or surge suppressors may be necessary to safeguard connected equipment.

5. **Physical Wear Over Time**

While the A120S is durable, the momentary button can wear out with extensive use, especially if pressed frequently or aggressively. The switch mechanism may eventually require replacement, though this is more of a long-term consideration than an immediate issue.

6. **No Built-in Indicators**

The switch lacks visual or auditory feedback to confirm engagement (e.g., a light or click sound). This can be a minor inconvenience in low-light or noisy environments where you rely on tactile confirmation.

7. **Connection Options Are Standardized**

While the 1/4-inch TRS and XLR connections are common, they may not be compatible with all equipment. For example, some modern audio interfaces or digital devices might require specific connectors (e.g., USB, Thunderbolt, or proprietary ports), limiting its use in those contexts.

8. **No Remote Control Capability**

The A120S is a physical switch and doesn t support remote control via software or MIDI. If you need to trigger actions from a computer or a MIDI controller, you d need to pair it with additional hardware or software solutions.

9. **Potential for Signal Noise**

While rare, poorly wired or damaged connections could introduce noise into your signal. This is more of a risk during installation or if the switch is mishandled, but it s worth noting as a potential issue to monitor.

10. **Limited Customization**

The A120S comes in a single design with no customizable features (e.g., color, size, or additional controls). If aesthetics or specific physical attributes are important to your setup, you might find other switches more appealing.

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### **Conclusion**

The Shure A120S Momentary Line Switch is a highly capable and reliable tool for audio professionals and enthusiasts who need a simple, durable, and versatile momentary switch. Its strengths lie in its reliability, ease of use, and compatibility with a wide range of audio setups. It excels in scenarios where temporary signal control is required, such as live sound, studio recording, or cueing systems.

However, its lack of latching functionality, limited advanced features, and the need for careful wiring may pose challenges for users with specific requirements. For those who prioritize simplicity, durability, and cost-effectiveness, the A120S is an excellent choice. Conversely, users who need latching, digital integration, or more complex signal processing may need to supplement it with additional equipment or opt for alternative solutions.

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### **Recommendation**

- You need a reliable, momentary switch for live sound, studio muting, or cueing.

- You prefer a passive, no-power-required solution that integrates easily with standard audio connections.

- You value durability and a proven product with strong user feedback.

- Your budget is reasonable, and you want a cost-effective tool that doesn t compromise on quality.

- You require a latching switch (e.g., Shure A120L or other latching models).

- You need digital or MIDI control for your switch (e.g., MIDI-controlled relays or software-based solutions).

- Your setup involves complex signal routing or advanced effects that require more than basic on/off control.

- You re uncomfortable with wiring or need pre-wired solutions (e.g., pre-made pedalboards or rack-mounted switches).

For most users seeking a dependable, versatile, and affordable momentary line switch, the Shure A120S is an outstanding choice. Its combination of reliability, simplicity, and compatibility makes it a staple in many audio workflows. If your needs align with its primary function, it s hard to go wrong with this switch.

Details:

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part #: a120s prices

• $24.99-$59.98

specifications micwisys:

• brand: Shure
• mpn: Shure-a120s
• model: Shure A120s
• form factor: In Line Switch
• color: Black

general micwisys:

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

returns micwisys:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer
• method: Money back

seller micwisys:

• rating: 99.6%
• city: Des Plaines, Illinois
• # reviews: 22059

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offer micwisys:

• started: February 17, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

shipping micwisys:

• transit: 3-8 Days
• class: Expedited
• service: USPS Priority Mail
• cost: $0.00
• carrier: USPS
• type: Fixed

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