Plantronics Blackwire 3320 USB Headset
The Plantronics Blackwire 3320 is a corded stereo headset engineered for enterprise unified communications and all-day desk work. Our USB-A connectivity delivers plug-and-play compatibility with Windows and Mac softphones — no drivers, no configuration delays.
We built the 3320 with leatherette ear cushions and an adjustable headband that distributes pressure evenly across extended video calls and contact center shifts. Inline controls let you adjust volume, mute the microphone, and answer calls without toggling away from your screen. The noise-canceling microphone reduces ambient office chatter, so your voice comes through clearly on every Zoom, Teams, or Skype session.
- USB-A wired connection for PC and Mac
- Stereo audio with 20 Hz – 20 kHz frequency response
- Noise-canceling boom microphone (100 Hz – 10 kHz)
- Inline controls: volume up/down, mute, call answer/end
- Leatherette ear cushions for all-day comfort
USB connectivity and unified-communications compatibility
The Blackwire 3320 ships with a 2.3-meter braided USB-A cable that connects to any Windows PC or Mac running a softphone platform. We certified the headset for Microsoft Teams and Skype for Business, and it works natively with Zoom, Cisco Jabber, and most VoIP clients.
Dynamic EQ automatically shifts the frequency curve when you’re on a call versus listening to music or training videos. You’ll hear richer bass during webinar playback, then a mid-range boost that brings voices forward the moment you answer. No manual profile switching — our DSP handles the transition in real time.
Microphone and audio performance
We positioned a flexible boom microphone on the left ear cup with a 330-degree rotation range, so you can angle it precisely to your mouth or flip it up when you step away. The capsule uses a cardioid pickup pattern and a two-layer foam windscreen to reject keyboard clicks and HVAC hum.
Stereo drivers deliver 20 Hz to 20 kHz frequency response — enough range to catch both the low rumble of a video soundtrack and the high-frequency clarity you need to distinguish similar-sounding names on a prospect call. Peak input power is rated at 30 mW per channel, which means you won’t clip or distort even if you prefer louder playback during solo work.
Inline controls and call management
A compact control pod sits 40 centimeters down the cable from the left ear cup. Four buttons let you raise volume, lower volume, mute the microphone, and answer or end calls. Each button produces a crisp tactile click, so you can adjust settings by feel during a screen share.
The mute button glows red when the microphone is silenced — a visual cue that prevents the awkward moment when you think you’re unmuted but the team hears nothing. Call-answer integration works with most UC platforms; pressing the button once picks up an incoming ring in Teams or Zoom without reaching for your mouse.
Other stereo USB headsets in our Blackwire family
What people are saying
Common questions about the Blackwire 3320
Yes. The Blackwire 3320 uses a standard USB-A connection that works with macOS 10.10 and later without additional drivers. Plug the headset into any USB port, and your Mac will recognize it as an audio input and output device. Inline controls for volume and mute function normally, and the call-answer button integrates with FaceTime and most third-party softphones.
The Blackwire 3320 requires a USB-A port, so you’ll need an adapter to connect it to a smartphone or tablet. USB-C-to-USB-A adapters work with recent Android devices and iPads that support USB audio, but inline call controls may not function on all mobile platforms. We designed the 3320 primarily for desktop and laptop use.
The attached USB-A cable measures 2.3 meters from the ear cup to the connector. That length gives you enough slack to stand up or lean back in your chair without unplugging. The cable is not detachable, so you’ll coil the full length when packing the headset for travel.
No. You must press the inline mute button to silence the microphone. Rotating the boom arm up will move it away from your mouth, but the capsule remains active until you toggle mute. The red LED on the control pod confirms when the mic is off.
Yes. We sell leatherette and foam replacement cushions as separate accessories. The cushions snap onto the ear-cup housings without tools. Most users replace them every twelve to eighteen months in high-use environments like contact centers.
The boom is fixed to the left ear cup and cannot be repositioned to the right. The boom rotates 330 degrees vertically, so you can angle it up, down, or directly in front of your mouth, but the anchor point remains on the left side of the headset.
Yes, as long as your Chromebook supports USB audio devices and you’re using the Teams web app or progressive web app. The headset will appear as a USB audio device in Chrome OS sound settings. Inline controls for volume and mute typically work, though call-answer functionality depends on the specific Teams implementation.