SENNHEISER 509750 Skm Microphone G4-A 835 516-558MHZ

( Brand: Sennheiser ), ( Manufacturer Part Number: 509750 ), ( Model: 100 G4-A 835 ), ( Part Type: Microphone Capsule ), ( Compatible Brand: Sennheiser, Shure ), ( Form Factor: Handheld/stand-held ), ( Connectivity: Uhf, Wired, Wireless ), ( Country Of Origin: Germany ), ( Item Weight: 2 Lb ), ( Suitable For: Live Performance )

Review SENNHEISER Skm 100 G4-a 835 Microphone 516-558mhz Complete Capsule

The **Sennheiser SKM 4-A G4-A 835** is a professional-grade, all-band mobile radio microphone designed for demanding broadcast, field reporting, and live event applications where clarity, durability, and reliability are paramount. Engineered to operate seamlessly within the **516 558 MHz frequency range**, this microphone delivers exceptional audio performance across a wide spectrum of broadcast environments, from bustling newsrooms to high-energy outdoor events. Its **G4-A design** incorporates advanced digital signal processing and adaptive noise suppression, ensuring crisp, distortion-free transmission even in challenging acoustic conditions, such as high wind, crowd noise, or ambient interference. The **835 model** is specifically optimized for **analog FM transmission**, making it ideal for traditional broadcast setups where digital infrastructure may not be available or practical.

Built to withstand the rigors of professional use, the SKM 4-A features a robust, **weatherproof construction** with a rugged housing that resists dust, moisture, and impact, allowing journalists and broadcasters to operate confidently in any environment whether under the rain in a war zone or amidst the chaos of a live sports event. Its **ergonomic design** includes a **foldable boom arm** for easy storage and a **quick-release clip**, enabling rapid attachment to helmets, vests, or other gear without compromising mobility. The microphone s **omnidirectional polar pattern** captures sound from all directions, ensuring that critical audio such as interviews, crowd reactions, or environmental sounds is captured with precision and fidelity.

At the heart of the SKM 4-A is **Sennheiser s legendary audio engineering**, combining a **high-sensitivity condenser capsule** with a **low-noise preamplifier** to deliver natural, detailed sound reproduction. The microphone s **adaptive noise reduction system** actively filters out unwanted background noise, such as wind turbulence or mechanical interference, while preserving the integrity of the voice signal. This technology is particularly valuable in dynamic environments where ambient conditions fluctuate rapidly. Additionally, the **built-in RF interference suppression** ensures stable transmission, even in areas with dense electromagnetic activity, such as near power lines or electronic equipment.

For broadcasters who demand flexibility, the SKM 4-A is compatible with a wide range of **Sennheiser and third-party mobile radio systems**, including the **G4-A series**, which supports both **analog and digital (DMR) operation** when paired with compatible transceivers. The microphone s **low-profile, unobtrusive design** minimizes the risk of interference with other equipment, while its **durable cable and connector** ensure reliable connectivity over extended use. Whether deployed for **live news coverage, sports commentary, or emergency broadcasting**, the SKM 4-A G4-A 835 sets a new standard for professional mobile microphones, blending cutting-edge technology with the ruggedness required to perform in the most demanding conditions.

The **Sennheiser SKM 4000 G4-A (model 509750, frequency range 516 558 MHz)** is a professional wireless lavaliere microphone system designed for broadcast, live sound, and professional audio applications. 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 Performance**

The SKM 4000 G4-A is built on Sennheiser s reputation for audio excellence. It features a **condenser capsule** (likely a high-quality omnidirectional or unidirectional design, depending on the variant) that delivers clear, detailed sound with low noise and wide dynamic range. The G4 series incorporates advanced signal processing to minimize interference and ensure clean audio capture.

2. **Professional-Grade Wireless System**

The 516 558 MHz frequency range falls within the **UHF (Ultra High Frequency) band**, which is less prone to interference from other wireless devices (such as baby monitors, Bluetooth, or older analog systems) compared to lower-frequency bands like VHF. This makes it ideal for crowded environments like live events, theater, or broadcast.

3. **Low Latency and Reliable Transmission**

Sennheiser s wireless systems are known for their **low latency** (delay between audio capture and playback), which is critical for applications like live broadcasting, podcasting, or voice-over work. The G4 series also includes features like **automatic frequency selection** and **signal strength monitoring** to maintain a stable connection.

4. **Durable and Rugged Build**

The SKM 4000 series is designed for professional use, with a **robust metal housing** for the transmitter and receiver. The lavaliere clip is lightweight yet sturdy, making it suitable for extended wear during long shoots or performances. The system is also **IP57-rated for dust and water resistance**, protecting it from harsh environments.

5. **Compatibility with Professional Audio Equipment**

The receiver outputs a **balanced XLR connection**, making it compatible with most professional audio interfaces, mixers, and recording setups. It also supports **Sennheiser s proprietary digital signal processing**, which can be controlled via software (e.g., Sennheiser s **AMBEO** or **Wireless Control App**) for advanced adjustments.

6. **Long Battery Life**

The transmitter typically runs on **AA batteries** (often lithium for extended use) and is designed to last for **several hours of continuous operation**, depending on the environment. Some variants also support **optional rechargeable battery packs** for longer sessions.

7. **Versatile Mounting Options**

The lavaliere clip is adjustable and can be attached to clothing, hats, or even small objects. The transmitter is compact, making it easy to conceal or mount on a belt clip, lanyard, or other accessories.

8. **Minimal Interference and Clear Audio**

The UHF range and **AMBE (Advanced Multi-Band Excitation)** technology help reduce interference, ensuring that the audio remains crisp even in noisy environments. This is particularly useful for **broadcast, podcasting, or field recording**.

9. **Easy Setup and User-Friendly Controls**

The receiver includes **LED indicators** for signal strength, battery life, and transmission status, making it easy to monitor performance at a glance. The transmitter is straightforward to pair with the receiver, often requiring just a button press.

10. **Widely Used in Professional Fields**

The SKM 4000 series is a **workhorse in broadcasting, live sound, theater, and corporate events**. Its reliability and performance make it a trusted choice for professionals who demand high-quality wireless audio.

---

### **Cons**

1. **High Cost**

The Sennheiser SKM 4000 G4-A is **not a budget-friendly** option. Prices typically range from **$500 to $800 USD**, depending on the variant (e.g., omnidirectional vs. unidirectional capsule) and whether accessories (like extra transmitters or cables) are included. This makes it less accessible for hobbyists or beginners.

2. **Requires AA Batteries (Potential Cost Over Time)**

While the battery life is decent, **AA batteries can add up in cost** over time, especially for frequent users. Some competitors offer **rechargeable battery options**, which can be more cost-effective in the long run.

3. **Bulky Transmitter for Some Applications**

The transmitter is **larger than some portable wireless mics** (e.g., Deity, Boya, or Shure s smaller wireless systems). While it s durable, it may not be as discreet for certain uses where a **clips-on transmitter** is preferred.

4. **Limited Range Compared to Some Competitors**

While the UHF range reduces interference, the **effective range is typically 50 100 meters (160 330 feet) in open space**. In **obstructed or crowded environments** (e.g., inside a building with walls or metal structures), the range can drop significantly. Some newer wireless systems (e.g., **Shure BLX or Deity D8**) offer slightly longer ranges with advanced antenna designs.

5. **No Built-in Audio Processing (Beyond Basic Controls)**

Unlike some modern wireless systems (e.g., **Rode Wireless Go II** or **Boynton MW-2**), the SKM 4000 G4-A does **not** include built-in audio effects, compression, or EQ adjustments. Users must rely on external audio interfaces or mixers for processing.

6. **Weight of the Lavaliere Clip**

While the clip itself is lightweight, the **transmitter adds noticeable weight** when worn on clothing. This can be uncomfortable for extended periods, though it s generally less intrusive than larger wireless systems.

7. **No Bluetooth or Digital Connectivity**

The system is **analog-based** (with digital processing) and does not support **Bluetooth, Wi-Fi, or digital audio streaming**. This limits its use in modern setups where wireless audio is often expected to integrate with smartphones or tablets.

8. **Limited Accessory Ecosystem**

While Sennheiser offers a range of accessories (e.g., different clips, cables, and stands), the ecosystem is **not as extensive as some competitors** (e.g., Shure, which has a wide range of wireless accessories and adapters).

9. **Potential for Signal Drop in Crowded Frequencies**

Even though UHF is less prone to interference, **in extremely crowded environments** (e.g., large concerts or multiple wireless mics on the same frequency), signal drops can still occur. Some newer systems use **automatic frequency hopping** to mitigate this.

10. **No Built-in Noise Cancellation**

The condenser capsule is sensitive and may pick up **ambient noise** if not properly shielded. Unlike some dynamic mics, it does not inherently reject background noise, requiring careful placement or external processing.

---

### **Conclusion**

The **Sennheiser SKM 4000 G4-A (516 558 MHz)** is one of the **best professional wireless lavaliere microphone systems** available, offering **exceptional audio quality, reliability, and durability**. It is ideal for **broadcast, live sound, theater, and professional recording** where high performance and low interference are critical.

However, its **high cost, reliance on AA batteries, and lack of modern connectivity** (like Bluetooth) may make it less suitable for **hobbyists, podcasters, or budget-conscious users**. Additionally, while its range is strong in open spaces, **obstructed environments** may require careful setup to maintain signal integrity.

If you are a **professional in need of a robust, high-quality wireless mic** and can invest in the system, the SKM 4000 G4-A is an excellent choice. For **casual users, podcasters, or those on a tighter budget**, there are **more affordable alternatives** (e.g., **Shure BLX, Boya BY-WM6, or Deity D8**) that offer similar wireless performance with additional features.

---

### **Recommendation**

- You are a **professional broadcaster, live sound engineer, or theater technician** who requires **reliable, high-quality wireless audio**.

- You work in **environments where interference is a concern** (e.g., large venues, crowded frequencies).

- You prioritize **durability, low latency, and professional-grade performance** over modern connectivity features.

- You are willing to **invest in a premium wireless system** that will last for years.

- You are a **podcaster, YouTuber, or hobbyist** looking for a **more affordable wireless mic** with modern features (e.g., Bluetooth, digital processing).

- You need **longer battery life** and prefer **rechargeable options**.

- You work in **smaller spaces or need a more discreet transmitter**.

- You want **additional audio processing** (e.g., compression, EQ) built into the system.

- **Shure BLX Series** (e.g., BLX24 UHF) More affordable, with digital processing and Bluetooth options.

- **Deity D8** Compact, rechargeable, and offers long range with advanced features.

- **Boya BY-WM6** Budget-friendly, lightweight, and widely used in podcasting.

- **Boynton MW-2**

Details:

Note: I have more G2 and G3 items for sale EM 500 receivers, EW 100 / 300 handhelds, plug-INS, etc. Sennheiser SKM100 G4-835 Wireless microphone transmitter, with 835 dynamic capsule, stand mount, box, and bag. Original owner, very few gigs on this mic. In mint condition see photos of actual item.

The zippered pouch is from Shure; everything else as-shipped Sennheiser.

part #: 509750 prices

• $150.00-$195.00

specifications micwisys:

• brand: Sennheiser
• mpn: 509750
• model: 100 G4-a 835
• part type: Microphone Capsule
• compatible brand: Sennheiser, Shure
• form factor: Handheld/stand-held
• connectivity: Uhf, Wired, Wireless
• country of origin: Germany
• item weight: 2 Lb
• suitable for: Live Performance

offer micwisys:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: February 28, 2026
• quantity: 1

returns micwisys:

• policy: No Returns

shipping micwisys:

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

seller micwisys:

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

general micwisys:

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

payments micwisys:

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

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