Profound Technologies Blog

What Are the Best Microphones for Large Conference Rooms?

Written by Brett Fisher | Mar 5, 2026 12:37:25 AM

Key Takeaways

 

  • Video conferencing systems often use a microphone array, which is a group of microphones in a self-contained unit.
  • Microphone arrays are preferable because they capture audio consistently from all around the room.
  • The best microphone array for a large conference room depends on multiple factors, such as room size and layout, number of participants, user behavior, and compatibility with other video conferencing hardware.
  • Top choices are the Shure MXA920 for ceiling coverage, the Shure MXA310 for tabletop and flexible setups, and the Rally Bar and Poly Studio X70 for all-in-one conferencing bars with optional expansion mics.

Choosing the best microphone for a large conference room is an important decision that significantly affects the audio quality of your video-based communication and collaboration setup.

 

Most video conferencing systems don’t use a traditional singular microphone. Instead, they use a microphone array, which is a group of microphone capsules housed in a self-contained unit. The mics work together to capture audio clearly and consistently throughout the entire room.

 

There isn’t one perfect microphone configuration. You must consider numerous factors, such as room size and layout, number of participants, user behavior, and compatibility with other video conferencing hardware.

 

In this guide, we’re going to highlight the industry’s best microphones for large conference rooms, breaking down each array into separate categories based on their ideal use cases. Let’s dive right in!

1. Shure MXA920 for Permanent Overhead Coverage

The Shure MXA920 is our recommended microphone array for a large conference room that requires wide, overhead coverage.

 

Available in a square shape that looks like a ceiling tile or a round shape that resembles a modern light fixture, this array mounts and blends seamlessly with the ceiling. Further enhancing aesthetic appeal, the array comes in white, black, or aluminum finishes and can be painted.

 

Beyond its modern style, this unit is the best microphone for a large conference room up to 30 x 30 feet (9 x 9 meters). Furthermore, coverage can be fine-tuned with separate coverage zones through Shure Designer software, allowing for highly flexible custom configurations.

 

Shure is a very familiar brand among audio enthusiasts. Shure mics are used in the most prestigious recording studios and are widely viewed as the industry standard for speaking and live music presentations. The MXA920 delivers the superb audio quality you expect.

 

Key Features:

 

  • Beamforming: This technology utilizes steerable lobes to pick up highly focused audio from specific areas of the workspace.
  • Low-Profile Form Factor: The square or round shape, ceiling mount, and sleek, non-intrusive overall design make the MXA920 the best microphone for large conference rooms that require a professional presentation that blends into the environment.
  • Wide Overhead Coverage: With the ability to capture audio in rooms up to 30 feet x 30 feet, the MXA920 is an outstanding microphone array for a large conference room.
  • Automatic Coverage Technology: The ability to designate specific pickup zones can be a game-changer in unconventional room layouts.
  • Onboard DSP (Digital Signal Processing): Enhances audio with automatic mixing, gain control, echo cancellation, and noise reduction.

 

2. Shure MXA310 for Flexible Tabletop Configurations

 

A tabletop microphone array may be preferred in workspaces where ceiling mounting isn’t viable, practical, or necessary. Tabletop mics also allow for hands-on control, and they can be moved from room to room, if needed.

 

The Shure MXA310 is the best microphone for large conference rooms with ambient overhead noise, such as from a ceiling fan or HVAC system. It uses a toroid polar pattern that facilitates 360° audio capture around the table while rejecting noise from above.

 

This microphone array is also highly adaptable to different room sizes and layouts. One unit is ideal for small to medium rooms with 7–13 participants, but multiple units can be networked together, allowing the system to scale as needed in larger environments.

 

Like the MXA920, this array supports custom audio pickup zones for precise coverage and has onboard DSP.

 

Key Features:

 

  • Tabletop Design: Can be mounted directly to tables or moved from room to room.
  • Beamforming: Captures focused audio.
  • Toroid Polar Pattern: Captures 360° audio and rejects overhead noise, making it the best microphone for large conference rooms with loud ceiling fans and HVAC systems.
  • Scalability: Networking multiple units lets you customize a microphone array for a large conference room.
  • Steerable Coverage: Lets users designate specific audio capture zones.
  • DSP: Automatically enhances audio quality.

 

3. Video Bars for All-in-One Setups

 

Instead of using an external microphone array, you may want to consider an all-in-one video conferencing bar like the Logitech Rally Bar or Poly Studio X70.

 

These self-contained units come equipped with integrated microphone arrays as well as cameras, eliminating the need for individual devices. They’re perfect if you need a powerful yet user-friendly “plug-and-play” solution.

 

Key Features:

 

  • All-in-One Appliances: These units come equipped with cameras and some of the industry’s best microphones for large conference rooms.
  • Expandable Coverage: External microphones can be used to expand audio coverage – Logitech Rally Mic Pods for the Rally Bar family or Poly Table Expansion Microphones for the Poly Studio series.
  • Plug-and-Play Deployment: These user-friendly devices make it possible to start video conferencing in minutes. Even non-technical users can get up and running quickly and easily.

 

Which Microphone Array Should You Choose?

 

  • For Permanent Overhead Coverage: Choose the Shure MXA920 if you need a reliable, consistent audio pickup solution that will be permanently installed on the room’s ceiling.
  • For Flexible Tabletop Pickup: The Shure MXA310 is the best microphone for large conference rooms and small rooms alike because multiple units can be networked together. The tabletop design is portable or mountable.
  • For All-in-One Convenience: The Logitech Rally Bar or Poly Studio X70 conferencing bars have cameras and microphones in one plug-and-play device for hassle-free video conferencing. Audio coverage can scale with optional expansion mics.

 

Level Up Your Communications

 

We only carry top-of-the-line video conferencing microphones, but what works for one room may not be ideal for the next.

 

Contact us now for a free consultation with an AV specialist. We’ll be happy to help you choose the right microphone array for a large conference room.


We don’t just sell state-of-the-art video conferencing equipment. Our AV services include design and consulting, installation, and managed services like support and maintenance.

 

Shop the best microphones for large conference rooms, and partner with Profound Technologies to transform your workspace.