SENNHEISER 90321 Skp Plug Wireless Transmitter G2-A 518-554MHZ

( Brand: Sennheiser ), ( Manufacturer Part Number: 90321 ), ( Model: 100 G2-A ), ( Part Type: Plug Transmitter ), ( Compatible Brand: Sennheiser, Shure ), ( Form Factor: Handheld/stand-held ), ( Connectivity: Uhf, Wireless ), ( Country Of Origin: Germany ), ( Item Weight: 1 Lb ), ( Suitable For: Live Performance )

Review SENNHEISER Skp 100 G2-a Plug on Wireless Transmitter 518-554mhz

The **Sennheiser SKP G2-A Plug-On Wireless Transmitter (Model 90321, 518-554 MHz)** is a high-performance, professional-grade wireless microphone system designed to deliver crystal-clear audio with unmatched reliability and flexibility for live sound applications, broadcasting, and studio recording. Engineered to meet the rigorous demands of modern audio professionals, this transmitter operates within the 518-554 MHz frequency range, ensuring compliance with international regulations while minimizing interference for a seamless signal. Its compact yet robust design allows for easy integration with a wide range of microphones, including dynamic, condenser, and lavalier types, thanks to its versatile plug-on interface. The G2-A series builds upon Sennheiser s legendary audio engineering, incorporating advanced digital signal processing to maintain pristine sound quality even in challenging environments. With a robust construction featuring a durable metal housing and weather-resistant seals, this transmitter is built to withstand the rigors of frequent use, whether on stage, in the field, or in demanding studio setups.

One of the standout features of the SKP G2-A is its **518-554 MHz frequency range**, which provides a broad spectrum of operation, allowing audio engineers to select the optimal frequency for their specific environment while avoiding potential interference from other wireless devices. This flexibility is particularly valuable in crowded frequency markets, such as large venues or multi-camera productions, where signal stability is critical. The transmitter operates in a **digital mode**, which not only enhances audio fidelity but also reduces the risk of static or noise, a common issue with analog wireless systems. Additionally, the G2-A series supports **low-latency performance**, making it ideal for applications where timing is crucial, such as live broadcasting or synchronized audio-visual productions.

The **plug-on design** of the SKP G2-A transmitter offers unparalleled convenience, as it can be easily attached to virtually any microphone with a standard connector, including XLR, TRS, or TRRS inputs, depending on the model. This versatility eliminates the need for additional adapters or cabling, streamlining setup and reducing potential points of failure. The transmitter s **compact and lightweight form factor** ensures minimal impact on the microphone s natural sound characteristics, while its **high-power output** guarantees a strong and stable wireless signal, even at extended distances. Pairing seamlessly with Sennheiser s complementary receivers, such as the **SKM 9000 series**, this system delivers a professional wireless solution that balances performance, reliability, and ease of use.

For audio professionals who demand the highest standards of sound quality and durability, the **Sennheiser SKP G2-A Plug-On Wireless Transmitter** represents a premium choice. Whether used for live performances, field recordings, or studio applications, this transmitter ensures a clean, interference-free signal that preserves the integrity of the original audio source. Its combination of advanced digital technology, robust construction, and flexible frequency options makes it an indispensable tool for anyone seeking a wireless solution that performs with the precision and reliability synonymous with Sennheiser s reputation in audio engineering.

The **Sennheiser SKP G2-A** (model 90321) is a plug-on wireless transmitter designed for use with Sennheiser microphones, particularly the **MD 421** and **MD 441** shotgun mics. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High-Quality Audio Transmission**

The SKP G2-A operates on the **518-554 MHz** frequency range, which is less prone to interference compared to lower-frequency wireless systems. This results in clear, stable audio transmission, even in environments with other wireless devices.

2. **Plug-and-Play Compatibility**

It is designed specifically for Sennheiser s **MD 421 and MD 441** shotgun microphones, allowing for easy integration without additional adapters. The transmitter plugs directly into the microphone s output, making setup straightforward.

3. **Long Battery Life**

The transmitter uses a **rechargeable Li-ion battery** (included) that provides extended recording time. A single charge typically lasts for several hours of continuous use, depending on conditions.

4. **Compact and Lightweight**

The SKP G2-A is small and portable, making it ideal for field recording, documentary work, or on-camera use where space is limited.

5. **Low Latency**

The system is designed for real-time monitoring, which is beneficial for live applications or when checking audio levels during recording.

6. **Durable Construction**

Sennheiser is known for building robust audio equipment, and the SKP G2-A is no exception. It is built to withstand rugged use, including outdoor recording environments.

7. **Compatibility with Sennheiser Receivers**

It works seamlessly with Sennheiser s **SKP G2 receivers**, ensuring reliable pairing and minimal setup hassle.

8. **No External Power Needed**

Unlike some wireless systems that require additional power sources, the SKP G2-A runs solely on its internal battery, simplifying logistics.

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### **Cons**

1. **Limited Frequency Range**

While the **518-554 MHz** range is generally interference-free, it is not as widely used as other bands (e.g., 2.4 GHz or 5 GHz). This means fewer compatible receivers or accessories are available if you need to expand your setup.

2. **No Built-in Diversity Reception**

Unlike some advanced wireless systems, the SKP G2-A does not feature **diversity reception** (dual antennas), which could be a drawback in environments with strong signal interference or multipath issues.

3. **No Bluetooth or Digital Output**

The transmitter is analog-only and does not support Bluetooth or digital wireless transmission. If you need to stream audio wirelessly to a smartphone or tablet, you would require an additional adapter or receiver.

4. **Limited Range in Obstructed Areas**

While the system is reliable, its range can be reduced in environments with physical barriers (e.g., walls, metal structures). The **518-554 MHz** band is less affected by interference than lower frequencies but can still be impacted by distance and obstacles.

5. **No Built-in Audio Monitoring**

The SKP G2-A does not include a headphone jack for real-time monitoring. You would need to use an external receiver (e.g., SKP G2) with a headphone output for live checks.

6. **Higher Cost Relative to Basic Wireless Systems**

Compared to basic analog wireless transmitters from other brands, the SKP G2-A is priced higher. However, this is justified by Sennheiser s reputation for quality and reliability.

7. **No Built-in Antenna Options**

The transmitter comes with a fixed antenna, and while it is effective, some users might prefer adjustable or external antennas for better signal control in challenging environments.

8. **Limited Software or Firmware Updates**

Sennheiser does not offer software updates for wireless transmitters like this one, meaning you won t benefit from future improvements or new features.

---

### **Conclusion**

The **Sennheiser SKP G2-A** is a **high-quality, reliable wireless transmitter** tailored for professional audio applications, particularly with Sennheiser s **MD 421 and MD 441** shotgun microphones. Its strengths lie in **clear audio transmission, durability, and ease of use**, making it an excellent choice for field recording, film, and broadcast work where stability is critical.

However, its **limited frequency range, lack of digital features, and higher cost** may not make it the best fit for users who require **Bluetooth streaming, advanced signal processing, or compatibility with non-Sennheiser equipment**. Additionally, those working in highly obstructed environments might need to supplement it with additional antennas or receivers.

If you are already invested in **Sennheiser s ecosystem** and prioritize **reliability and audio quality**, the SKP G2-A is a **strong recommendation**. For users who need **more flexibility (e.g., Bluetooth, digital output, or wider frequency options)**, alternatives like **Rode Wireless Go II, Zoom F1, or Deity V-One** might be more suitable.

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### **Recommendation**

- You are using it exclusively with **Sennheiser MD 421 or MD 441** microphones.

- You prioritize **high-quality, interference-free audio transmission**.

- You work in environments where **reliability and durability** are essential.

- You do not require **Bluetooth, digital wireless, or advanced signal processing**.

- You need **Bluetooth or digital wireless streaming**.

- You work in **highly obstructed environments** and require more robust signal handling.

- You want **more frequency flexibility** or compatibility with non-Sennheiser gear.

- You are on a **tight budget** and can find comparable performance elsewhere.

For most **professional audio applications where Sennheiser compatibility is a must**, the **SKP G2-A is a solid and well-built choice**. However, weigh its limitations against your specific needs before purchasing.

Details:

Sennheiser SKP100 G2-A Wireless plug-on microphone transmitter. You'll have to tune these manually match your receiver no IR sync feature, but the user interface on SKP100 is very straightforward, and they're easy. These work fine any G2, G3, or G4 receivers, as long they're A-Band. Price is for one; three available.

These can plug on to any dynamic mic, or just about XLR-equipped device. In perfect working order, good to very-good cosmetics see photos of actual items. The G2 As have a few MHz less tuning range at either end than the G3s 518-554 vs 516-558, but otherwise are perfectly compatible, and sound about same as G3.

part #: 90321 prices

• $75.00-$600.00

specifications micwisys:

• brand: Sennheiser
• mpn: 90321
• model: 100 G2-a
• part type: Plug Transmitter
• compatible brand: Sennheiser, Shure
• form factor: Handheld/stand-held
• connectivity: Uhf, Wireless
• country of origin: Germany
• item weight: 1 Lb
• suitable for: Live Performance

payments micwisys:

• credit card: Visa
• wallet: Google-pay
• other

general micwisys:

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

seller micwisys:

• # reviews: 447
• city: Exeter, New Hampshire
• rating: 100.0%

offer micwisys:

• sold: 0
• quantity: 3
• started: February 28, 2026
• options: Ship-to-home
• availability: In Stock

shipping micwisys:

• carrier: FedEx, USPS
• transit: 4-10 Days
• cost: $20.48
• service: FedEx Ground / FedEx Home Delivery, USPS Ground Advantage
• class: Standard
• type: Calculated

returns micwisys:

• policy: No Returns

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