Plantronics C320 USB Headset
The Plantronics C320 is a USB headset built for everyday business communication on your PC. We designed the C320 for users who need a reliable, lightweight solution for unified communications platforms—whether you’re on Microsoft Teams, Zoom, or Skype for Business. The over-the-head wearing style distributes weight evenly, while leatherette ear cushions and adjustable headband ensure all-day comfort.
Our noise-canceling microphone focuses on your voice and minimizes background chatter, so your message comes through clearly on conference calls. Plug-and-play compatibility means the C320 works instantly with Windows and Mac systems—no drivers to install, no configuration hassles. Inline volume and mute controls sit right on the cable for easy adjustment mid-call.
- USB-A connection for universal PC compatibility
- Noise-canceling microphone reduces ambient sound pickup
- Leatherette ear cushions for extended wearing comfort
- Inline volume and mute controls
- Over-the-head binaural design for immersive audio
Audio performance and microphone technology
The C320’s wideband audio captures frequencies from 100 Hz to 10 kHz, which covers the full range of natural speech. This bandwidth ensures clarity whether you’re listening to a colleague’s presentation or dictating notes into a recording app. The binaural ear-cup design isolates each ear from office noise, letting you focus on the call instead of your surroundings.
Our noise-canceling microphone uses a directional pickup pattern to emphasize sound from directly in front of the boom while rejecting keyboard clatter and side conversations. The boom arm rotates 300 degrees, so you can position the mic on your left or right and achieve the same clarity. During testing, we found that background noise reduction improved intelligibility scores by 20 percent compared to non-canceling designs.
Comfort and build quality
We built the C320 with a lightweight frame that weighs just 2.8 ounces, reducing neck fatigue during marathon troubleshooting sessions or training webinars. The leatherette ear cushions resist moisture and feel soft against the skin, while the foam padding inside conforms to the shape of your ear for passive noise isolation.
The adjustable headband slides to seven positions, accommodating head sizes from small to extra-large. Both the headband and ear-cup hinges use reinforced plastic that withstands daily flexing without cracking. The 6.5-foot braided cable resists tangling and provides enough slack to stand up or lean back without pulling the headset off your head.
Plug-and-play compatibility
The Plantronics C320 connects via USB-A and enumerates as a standard audio device on Windows 7 and later, macOS 10.10 and later, and Chrome OS. No driver installation is required—your operating system recognizes the headset within two seconds of plugging it in. The inline controller includes volume up, volume down, and microphone mute buttons that map to your system’s native audio controls.
We’ve certified the C320 for Microsoft Teams, Skype for Business, Cisco Jabber, and Zoom. That certification means call-answer, hang-up, and mute functions integrate seamlessly with each platform’s softphone interface. The headset also works with any application that supports standard USB audio, including recording software, media players, and browser-based communication tools.
Other corded headsets for unified communications
What people are saying
Common questions about the Plantronics C320
Yes, the C320 is certified for both Zoom and Microsoft Teams. The headset enumerates as a standard USB audio device, so call-answer, mute, and volume controls integrate with each platform’s softphone interface. You can select the C320 as your audio device in Zoom’s settings or Teams’ device preferences, and it will handle calls, meetings, and screen-share audio without additional configuration.
Absolutely. The C320 supports macOS 10.10 and later with plug-and-play compatibility. Connect the USB cable to any available port, and your Mac will recognize the headset within seconds. The inline volume and mute buttons map to macOS audio controls automatically. We’ve tested the C320 on MacBook Pro, iMac, and Mac Mini systems with full functionality across all models.
The C320 includes a 6.5-foot braided USB cable. That length provides enough slack for standing-desk adjustments, leaning back in your chair, or turning to write on a whiteboard without disconnecting. The braided sheath resists tangling and withstands repeated coiling better than smooth rubber cables.
Yes, the boom arm rotates 300 degrees, allowing you to position the microphone on your left or right side and adjust the distance from your mouth. The boom holds its position once you set it, so it won’t drift during calls. The noise-canceling capsule maintains consistent pickup quality regardless of which side you wear it on.
The C320 delivers wideband audio from 100 Hz to 10 kHz. This range captures the full spectrum of human speech, ensuring natural-sounding voices without the muffled quality of narrowband headsets. Music and multimedia content will sound clear, though audiophile-grade fidelity is not the design goal—the tuning prioritizes voice intelligibility for business communication.
Yes, replacement leatherette ear cushions are available from our accessories catalog. Each cushion snaps onto the ear-cup housing with a simple twist-and-pull motion. We recommend replacing cushions every 12 to 18 months of daily use to maintain hygiene and comfort. The replacement process takes less than a minute per side and requires no tools.
No drivers are needed. The C320 uses USB audio-class drivers that are built into Windows, macOS, and Chrome OS. When you plug in the headset, your operating system automatically installs the necessary components in the background. You’ll hear a notification sound when the headset is ready to use, typically within two seconds of connection.