Poly Blackwire 3320 Review

Poly Blackwire 3320 Review

Voice & Mic Clarity 7.1/10

The noise-cancelling mic sits on a 135 mm boom that rotates 280°, with a 100 Hz to 10 kHz range.

However, among open-plan desks, I’d expect your voice to come through clearly from the far end, excellent for the price.

A 135 mm boom with 280° rotation means left- and right-ear wearers are both covered without a special SKU. The 100 Hz–10 kHz mic band matches what UC apps actually transmit, so wider response wouldn’t help on the call.

• Boom Mic Yes
• Mics 1
• Mic Freq. 100 Hz – 10 kHz

Comfort & Ergonomics 9.3/10

At 131 g with foam cushions, it’s light. The on-ear stereo design is comfortable for shorter stretches.

Expect the foam to feel warm after a long session.

At 131 g it’s one of the lightest stereo headsets we list, so all-day shifts are realistic if you accept on-ear pressure. Foam wears faster than leatherette; keep spare cushions in the IT closet for a fleet rollout.

The headband is simple plastic with enough adjustment for shared use across adult sizes. Kids or very small heads may need the band near its tightest stop.

• Weight 131 g
• Cushions Foam

Certification & Controls 8.7/10

The Blackwire 3320 is listed as Microsoft Teams, Works With Chromebook.

Mute is listed as Inline mute button. Call controls include call answer/end; Teams button on Teams variants. On-headset controls are listed as Inline: call answer/end, mute, volume, Teams button. IT can manage it through Poly Lens. I’d look for a physical mute I can find without thinking, especially in an open office.

• Call Button Yes

Certification & Controls

The Blackwire 3320 is listed as Microsoft Teams, Works With Chromebook.

Mute is listed as Inline mute button. Call controls include call answer/end; Teams button on Teams variants. On-headset controls are listed as Inline: call answer/end, mute, volume, Teams button. IT can manage it through Poly Lens. I’d look for a physical mute I can find without thinking, especially in an open office.

Sound Quality

32 mm drivers give clear voice audio. It’s a simple wired headset tuned for calls.

Calls sound crisp, and the inline Teams button should bring the app forward in a moment.

A 20 Hz–20 kHz response and 32 Ω load make it an easy USB-C drive from any modern laptop. The tuning is deliberately mid-forward so conference audio cuts through laptop speakers on the far end without you shouting.

Stereo imaging is basic — you’ll hear left/right cues in recorded training videos, but this isn’t a music headset. For call queues and all-day softphone use, that focus is the right trade.

Noise Cancelling

There’s no ANC. The foam cushions give only light isolation.

I’d estimate office noise still reaches you at a reduced level. Noisy environments call for an ANC headset.

Foam on-ear pads leave most of the room audible, which some supervisors want so agents stay aware of the floor. If your site is loud, budget for an ANC wireless model rather than expecting pads alone to fix it.

There’s no transparency mode to toggle because there’s no ANC stack at all — what you hear is simply the real room. That simplicity is why schools and hot desks still buy wired Blackwires in bulk.

Full Specifications

Product Details