Top 10+ anti-howling devices for professional karaoke systems

Howling and screeching sounds are the “nightmare” of all karaoke lovers. This phenomenon occurs when sound waves from the speaker are captured by the microphone, creating an amplified loop, causing a piercing sound.

According to Phuc Truong Audio's audio experts, howling is not only annoying but can also damage speaker components, especially treble speakers, with frequencies exceeding the threshold ranging from 2000Hz - 8000Hz.

So what is the solution? Anti-feedback devices are electronic solutions that use digital signal processing (DSP) technology to detect and eliminate feedback – an audio loop that causes unpleasant howling sounds. With the development of technology, modern anti-feedback devices today have been greatly improved, with the ability to eliminate up to 90% of howling sounds, while maintaining true sound quality. 

In fact, product lines such as Feedback XTR 2.0, Bosa 6.0, or high-end digital reverbs like JBL KX180A not only help eliminate howling but also integrate many other features such as sound adjustment (EQ), Echo/Reverb effects, and diverse connections (Bluetooth, Optical, USB). 

This article will introduce 10+ models of anti-feedback devices that are currently highly rated, along with technical specifications, outstanding advantages, and practical applications. You will be guided on how to choose the device that best suits your needs, from low-cost specialized product lines to high-end digital echo models, integrating many advanced processing technologies. 

And Phuc Truong Audio Refer to the article for details to make the right choice.

What is Anti-Howling Device for Karaoke System?

An anti-feedback device is an electronic device that helps eliminate or minimize howling in a karaoke sound system. This phenomenon occurs when the sound from the speaker is captured by the microphone, creating an audio loop that causes unpleasant howling. The anti-feedback device uses digital signal processing (DSP) technology to detect and eliminate howling frequencies, ensuring clear and stable sound.

Popular types of anti-howling devices today:

• Anti-feedback digital mixer: Is a digital signal processing device, integrated with anti-feedback and features such as sound calibration, Echo/Reverb. For example: JBL KX180A with AFE technology effectively eliminates howling.
• Specialized anti-howling equipment: Focusing solely on anti-feedback functionality, like Feedback XTR 2.0, helps eliminate feedback from speakers and microphones without distorting the sound.
• Anti-feedback mechanical amplifier: Easy to use, integrated basic anti-howling circuit, suitable for family karaoke.
• Equalizer: Used to balance frequencies and cut off howling frequencies, but requires high technique to use effectively.
• Anti-feedback microphone: Some modern microphone lines integrate anti-feedback technology right from the sound source, minimizing feedback.

Depending on your needs and karaoke system configuration, you can choose the appropriate equipment to ensure the best sound quality.

Top 9+ Trusted Anti-Howling Devices for Karaoke Systems

Below is a list of 11 of the most prominent anti-howling devices today, along with an introduction, outstanding advantages and basic technical specifications. 

1. Feedback XTR 2.0

Feedback XTR 2.0 is a specialized anti-howling device, designed to completely handle the howling phenomenon in karaoke systems. This product uses advanced digital signal processing technology, helping to eliminate howling without affecting sound quality. In particular, XTR 2.0 works effectively in closed, small spaces or with many speakers.

Outstanding advantages:

• Eliminates up to 90% of howling noise, making the sound clearer.
• Enhances the brightness and detail of the microphone sound, helping the singer feel more comfortable.
• Easy to install and use, no complicated calibration required.
• Suitable for many types of karaoke systems, from home to business.

Specfication:

• Processing technology: DSP (Digital Signal Processing).
• Anti-howling efficiency: >90%.
• Connection: 6.5mm Jack, XLR (Canon).
• Application: Family karaoke, small business.

2. Feedback Bosa 5.0

Feedback Bosa 5.0 is a specialized anti-feedback device with fast and accurate signal processing capabilities. This product is designed to suit professional karaoke systems, providing clear and stable sound.

Outstanding advantages:

• Uses automatic frequency detection and suppression algorithm.
• High durability, stable operation for long time.
• Compatible with many types of mixers and amplifiers.
• Effective in large spaces, suitable for business karaoke rooms or small halls.

Specfication:

• Processing technology: DSP.
• Anti-howling efficiency: 85-90%.
• Connections: XLR, RCA.
• Application: Karaoke business, hall.

3. Feedback Bosa 6.0

Feedback Bosa 6.0 is an upgraded version of Bosa 5.0, with a more powerful DSP processor and superior anti-howling capabilities. This device is designed to meet the needs of high-end karaoke systems.

Outstanding advantages:

• 64-bit DSP processor for instant recognition and suppression of howling.
• Multi-level anti-howling, customized to suit each space.
• Eliminates feedback without distorting the microphone, keeping the sound true.
• Modern design, friendly interface, easy to use.

Specfication:

• Processing technology: DSP 64-bit.
• Anti-howling efficiency: >90%.
• Connections: XLR, RCA.
• Application: High-end karaoke, large hall.

4. BKSound DSP-9000 Digital Echo

BKSound DSP-9000 is a mechanically adjusted digital reverb with powerful anti-feedback capabilities. This is the ideal device for those who want to comprehensively upgrade their karaoke system, from sound quality to howling handling capabilities.

Outstanding advantages:

• 5-level anti-howling, flexible customization to suit each space.
• Integrates many features such as sound adjustment, Echo, Reverb, Equalizer.
• Supports diverse connections: Bluetooth, Optical, USB, for easy connection with other devices.
• Delivers clear microphone sound, detailed background music, and smooth effects.

Specfication:

• Processing technology: DSP.
• Anti-howling: 5 levels.
• Connection: Bluetooth, Optical, USB, RCA.
• Application: Family karaoke, business.

5. JBL KX180A Digital Echo

JBL KX180A is a high-end digital echo from JBL brand, specially designed for professional karaoke systems. This device integrates dbx's exclusive anti-feedback technology AFE (Automatic Feedback Elimination), bringing outstanding efficiency.

Outstanding advantages:

• AFE technology with 12 Notch Filters, quickly eliminates howling.
• Supports 15-band EQ for microphone and 8-band EQ for music, deep and detailed adjustment.
• Echo and Reverb effects from Lexicon, delivering rich, professional sound.
• High durability, quality components, stable operation for a long time.

Specfication:

• Processing technology: AFE (Automatic Feedback Elimination).
• Anti-howling: 12 Notch Filters.
• Connection: XLR, RCA, Optical.
• Application: Professional karaoke, hall.

6. Feedback XTR 2.0 Plus

Feedback XTR 2.0 Plus is an upgraded version of XTR 2.0, with stronger anti-feedback capabilities and a more optimized design. This is the perfect choice for home and business karaoke systems.

Outstanding advantages:

• Eliminates feedback even when the microphone is close to the speaker.
• Enhances the brightness and detail of the microphone sound.
• Compact design, easy to install and use.
• Suitable for all types of mixers and amplifiers.

Specfication:

• Processing technology: New generation DSP.
• Anti-howling efficiency: >90%.
• Connections: XLR, RCA.
• Application: Family karaoke, business.

7. JKaudio X9000 Pro Digital Echo

JKaudio X9000 Pro is a high-end digital echo, designed specifically for professional karaoke systems. This device uses a powerful DSP chip, providing superior sound processing capabilities, especially in eliminating howling.

Outstanding advantages:

• Using Analog Devices ADSP-21489 DSP chip, ensuring fast and accurate processing performance.
• 7-level anti-feedback, suitable for many different spaces and sound configurations.
• Integrated Real-Time Analyzer (RTA) feature, helps users easily calibrate sound in real time.
• Smooth Echo and Reverb effects, providing professional sound experience.

Specfication:

• Processing technology: DSP Analog Devices ADSP-21489.
• Anti-howling: 7 levels.
• Connection: XLR, RCA, Optical.
• Application: Professional karaoke, large hall.

8. BIK BPR-5600 Digital Mixer

BIK BPR-5600 is a product from a famous Japanese audio brand. This device is designed to provide realistic, stable sound and effective anti-howling ability, suitable for both family and business karaoke.

Outstanding advantages:

• 4-mode anti-howling, allowing flexible customization according to usage needs.
• Realistic Reverb and Echo effects create an open sound space.
• High durability, stable operation for long time.
• Easily connect to other devices in the karaoke system.

Specfication:

• Processing technology: DSP.
• Anti-howling: 4 modes.
• Connections: XLR, RCA.
• Application: Family karaoke, professional business.

9. Bksound X6 Luxury Digital Amplifier

Bksound X6 Luxury is a high-end digital reverb, designed to bring a high-class sound experience. This device integrates multi-layer anti-feedback technology, effectively eliminating howling while maintaining true sound quality.

Outstanding advantages:

• Multi-layered Feedback Suppression technology, works effectively in all conditions.
• Modern color touch screen interface, easy to navigate and use.
• Supports storing multiple sound profiles (presets), suitable for many different music genres and spaces.
• Smooth Echo and Reverb effects, helping to enhance vocal quality.

Specfication:

• Processing technology: DSP.
• Anti-howling: Multi-layer.
• Connection: XLR, RCA, Optical.
• Application: High-end karaoke, professional singing room.

10. BCE DP 9200+ Digital Mixer

BCE DP 9200+ is a professional digital echo, designed to meet the needs of high-end karaoke systems. This device integrates many modern features, from anti-feedback to detailed sound adjustment, bringing a perfect sound experience.

Outstanding advantages:

• Using 4-core DSP processor, ensuring fast and accurate processing performance.
• Integrated Notch Filter, helps eliminate howling without affecting sound quality.
• Supports computer control software, allowing detailed sound adjustment.
• Advanced Echo and Reverb effects deliver rich, vibrant sound.

Specfication:

• Processing technology: 4-core DSP.
• Anti-howling: Notch Filter.
• Connection: XLR, RCA, Optical.
• Application: Professional karaoke, large hall.

11. JBL KX200 Digital Echo

JBL KX200 is another high-end digital reverb product from JBL, designed to deliver high-quality sound for professional karaoke systems. This device integrates advanced anti-feedback technology, effectively eliminating howling noises.

Outstanding advantages:

• Automatic anti-howling technology, works effectively in any space.
• Supports detailed sound adjustment with 15 EQ bands for microphone and 8 EQ bands for music.
• Echo and Reverb effects from Lexicon, delivering professional sound.
• Modern design, easy to install and use.

Specfication:

• Processing technology: DSP.
• Anti-howling: Automatic.
• Connection: XLR, RCA, Optical.
• Application: Professional karaoke, hall.

Experience in Choosing Anti-Howling Equipment for Karaoke Systems

Below are 7 important notes to help you choose the right anti-feedback device for your karaoke system:

• Identify your usage needs: First, you need to clearly define the purpose of using the karaoke system. For family karaoke, compact, easy-to-install devices are the right choice. For business karaoke or large halls, you need anti-howling devices with high capacity and strong signal processing capabilities to meet large spaces and complex sound systems.
• Choose the right device type:There are three main types of devices:
  • Specialized anti-howling device: Focuses only on eliminating feedback, suitable when you already have a mixer or amplifier.
  • Digital reverb with anti-feedback: This is a comprehensive solution, both anti-feedback and sound calibration and effects such as Echo/Reverb. This type is suitable for those who want to upgrade the overall sound quality.
  • Anti-feedback microphone: This type of microphone integrates anti-feedback technology to reduce feedback right from the sound source. However, the effectiveness is often lower than that of specialized devices.
• Make sure the device is compatible with the system: Check the connection ports such as XLR, RCA, Optical, or Bluetooth. Make sure the anti-feedback device can easily connect to the mixer, amplifier, or other devices in your karaoke system. If using a modern karaoke system, prioritize devices that support wireless connection for more convenience.
• Pay attention to the specifications:
  • Anti-howling effect: Choose a device that can eliminate 80-90% of howling noise to ensure high performance.
  • Signal processing technology: Prioritize devices using DSP (Digital Signal Processing) chips, ensuring fast, accurate signal processing without reducing sound quality.
  • Number of anti-howling levels: Devices with multiple levels of anti-feedback will be more flexible, allowing adjustment to suit each room space and sound configuration.
• Choose a reputable brand: Well-known brands usually offer high-quality products and guarantee long-term durability. In addition, you will also get better support in terms of after-sales services, such as warranties and user manuals.
• Consider the budget: Determine the appropriate budget to choose the product. With a low budget, you can choose basic specialized anti-feedback devices. In the mid-range and high-end segments, digital reverbs with integrated anti-feedback or specialized signal processors will bring more optimal efficiency.
• Proper installation and alignment: For the anti-feedback device to work effectively, you need to place the speaker and microphone in a reasonable position, avoiding pointing the microphone directly at the speaker. When installing, make sure the system is calibrated for the appropriate volume and use the anti-feedback features properly for optimal efficiency.

Where to Buy Genuine Anti-Howling Equipment at Good Prices in HCM?

Phuc Truong Audio is a leading prestigious unit in Ho Chi Minh City, specializing in providing professional audio solutions, including a full range of genuine anti-feedback and digital reverb devices. 

5 advantages that make Phuc Truong Audio trusted and highly appreciated by customers:

• Diversified products: From specialized anti-feedback devices to the highest quality digital echo lines from brands such as BKSound, JBL, BIK, BCE...
• 100% genuine commitment: All products have clear certificates of origin.
• Competitive price: We always strive to offer the best prices on the market.
• In-depth consulting: A team of experienced technicians is ready to advise and help you choose the product that best suits your configuration and budget.
• Considerate after-sales service: Support for installation, calibration and long-term warranty, ensuring your system operates stably and efficiently.

Come to Phuc Truong Audio to experience the products directly and receive the most dedicated advice!

(FQA) – Frequently asked questions about anti-feedback devices

Does the effectiveness of anti-howling devices depend on the installation location?

Yes. The location of the anti-feedback device greatly affects its performance. Place the device near the signal source (microphone or mix) will help detect and eliminate howling frequencies faster. Avoid placing speakers and microphones too close together to avoid audio loops.

Does the anti-feedback device affect the original sound quality?

Negligible. Modern devices use DSP technology, which only affects the howling frequencies without distorting the sound. The sound distortion is usually less than 0.01%, which cannot be detected by the naked ear. Reference: Microphone integrated with anti-howling DSP technology.

How to increase anti-howling efficiency in small karaoke rooms?

Use high-sensitivity anti-feedback equipment, such as a digital reverb with built-in DSP. In addition, adjust the microphone volume appropriately, avoid placing the microphone directly at the speaker, and use sound-absorbing materials in the room to reduce sound resonance. Reference How to adjust the mic and speakers to avoid howling when singing karaoke.

What are common mistakes when using anti-feedback devices?

3 common mistakes when using anti-howling devices:

• Incorrect signal port connection (e.g. incorrect connection between XLR and RCA).
• Adjust the input volume too high, causing overload of the device.
• Incorrect anti-feedback level configuration results in suboptimal performance.

Is it necessary to maintain the anti-howling device periodically?

Yes. It is recommended to clean the connection ports at least once every 3-6 months to ensure stable signal. Check and update the firmware (if supported by the device) to ensure maximum performance. See also: How to maintain karaoke system to avoid damage and howling.

What are the advantages of specialized anti-feedback devices compared to integrated anti-feedback digital reverbs?

Dedicated devices often handle feedback faster and more effectively because they focus on a single function. Meanwhile, digital echoes with built-in anti-feedback provide more flexibility with many additional features such as Echo, Reverb and EQ adjustment. Reference: How to adjust digital echo to prevent feedback simply.

Is it necessary to calibrate the anti-feedback device each time it is used?

No, if the device was installed and calibrated correctly from the start. However, if you move the device or change the space, you should recheck the settings. See details: How to adjust a good, standard karaoke system.

Should I use multiple anti-feedback devices in the same karaoke system?

Not necessary. A single high quality anti-feedback device is sufficient to handle all feedback signals. Using multiple devices may cause signal conflicts and reduce effectiveness.

Does the anti-feedback device need to be compatible with the speaker type?

Not directly. The anti-feedback device processes the signal from the mixer before sending it to the speaker, so it is independent of the type of speaker. However, the speaker must be placed in the right position to reduce the resonance phenomenon. Reference: How to arrange and install karaoke system scientifically and aesthetically.

When should the anti-feedback device be replaced?

When the device no longer handles feedback effectively, or when the device's technology is outdated and cannot meet new usage needs (such as wireless connectivity, complex signal processing).

Contact Phuc Truong Audio for the best advice!