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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-24 · 7 min read · Independent comparison
• PLT Poly Blackwire 3320 — biggest strength: hi-fi stereo sound with 180-degree pivoting speakers and a flexible microphone boom, plus a dedicated Teams button for instant access to the Teams app.
• PLT Poly Blackwire 3320 — biggest trade-off: it's an on-ear stereo design at 130 g, so it's the heavier, bulkier pick of the two, and it ships with a USB-C to USB-A adapter rather than two separate cables.
• Yealink UH37 — biggest strength: a very light 96.5 g mono build with dual noise-cancelling microphones, a 35 mm speaker, and a flip mute on the boom for instant privacy.
• Yealink UH37 — biggest trade-off: it's a mono headset, so you give up stereo separation for music and immersive audio, and the frequency range tops out where it tops out.
• Who the Blackwire 3320 is for: the buyer who wants stereo sound and a headset that adapts to either USB port without extra shopping.
• Who the UH37 is for: the buyer who wants the lightest possible all-day headset with strong microphone noise cancellation for calls.
The Blackwire 3320 is a wired, on-ear stereo headset built around flexibility. The speakers pivot up to 180 degrees and the microphone boom bends to where you want it, so you can wear it on either ear and angle the mic for a consistent pickup position. Poly's own audio tuning is the pitch here, and the hi-fi stereo wearing style is the reason this one is worth considering over a mono headset if you also listen to music or watch video between calls.
Connectivity is the quiet selling point. You get USB-C on the headset, and Poly includes a USB-C to USB-A adapter, so the same headset works on a modern laptop and an older desktop or dock without you buying a second cable. It's certified for Microsoft Teams and carries a dedicated Teams button that jumps straight into the app, which matters if Teams is where your whole workday lives.
The fit is aimed at long sessions: a plush padded headband and pillow-soft ear cushions, on-ear placement, plastic enclosure, black finish. It weighs 130 g. The controls are push-button with volume control on the headset, and the spec sheet lists active noise cancellation as the noise control type. Impedance is 32 ohm with a 10 kHz frequency response and a dynamic driver.
Who should buy it: anyone who wants stereo audio, a bendable boom for precise mic placement, and one headset that plugs into USB-C or USB-A. Who should skip it: if you want the lightest possible headset on your head for eight hours, or you specifically want a mono earpiece so you stay aware of your surroundings, the on-ear stereo design here is the wrong shape for you. Also skip it if you want a carry bag included — it ships with the headset and the adapter, in rigid or cushioned packaging, and that's it.
The UH37 is the lighter, more call-focused headset of the two. It's a wired mono headset at 96.5 g, which is a meaningful difference if you wear a headset all day and notice weight by hour six. Yealink builds it with a metal headband and soft triangular cushion, breathable leather ear cups, and a skin-friendly leather headband and ear pads — the design language is clearly about extended wear rather than premium materials for their own sake.
Audio is a 35 mm dynamic driver with a 20 Hz to 20,000 Hz frequency range, which is a wider stated range than the Blackwire 3320's 10 kHz top end. In practice that's the spec that supports the "work and music" positioning — a full-range driver for calls and for whatever you play between them. The dual microphones use noise cancellation to cut background sound on calls, and the ear pads are described as oval noise-isolating foam for passive isolation.
Controls are the standout feature. There are easily accessible controls on the earcup for calls, volume, mute, and one-touch Microsoft Teams activation, and the microphone boom has a flip mute, so you can raise the boom and be instantly muted without hunting for a button. The spec sheet lists hybrid noise cancellation as the noise control type, with button control and a remote control method.
It's Teams certified and Yealink says it works with Zoom and other leading UC platforms. It connects over USB or USB-C (the style name is "UH37 Mono UC USB-C/A"), connects to Yealink IP phones by default, and the box includes the headset, a carry bag, and a user manual.
Side-by-Side: Which Should You Choose?
• Best for stereo sound and music between calls → PLT Poly Blackwire 3320. Hi-fi stereo with 180-degree pivoting speakers is a genuinely different listening experience from mono.
• Best for all-day light weight → Yealink UH37. At 96.5 g versus 130 g, the UH37 is the one you're less likely to notice by the end of the day.
• Best for microphone noise cancellation on calls → Yealink UH37. Dual noise-cancelling microphones plus hybrid noise cancellation is the more call-protection-focused spec sheet.
• Best for plugging into any computer without extra parts → PLT Poly Blackwire 3320. USB-C on the headset plus an included USB-C to USB-A adapter covers both port types.
• Best for instant mute privacy → Yealink UH37. The flip mute on the boom is faster and more tactile than a button.
• Best for Teams-first workflows → tie, with a lean to the Blackwire 3320. Both are Teams certified; Poly adds a dedicated Teams button, while Yealink offers one-touch Teams activation on the earcup.
• Best for people who want a carry bag in the box → Yealink UH37. It includes one; the Blackwire 3320 ships with the headset and adapter.
• Best for buyers who want to compare real numbers before deciding → check the current price on Amazon for both. The spec sheets tell you what each headset does; only the listing tells you what each costs today.
In my opinion, the Yealink UH37 is the better buy for most people who spend their day on calls. It's lighter, it has the more call-focused microphone setup, and the flip mute is the kind of small design decision that makes a headset pleasant to live with. The Blackwire 3320 wins when stereo audio matters to you — if you listen to music or watch video at your desk, the pivoting stereo speakers and the USB-C/USB-A flexibility are worth the extra weight. If I had to pick one for a pure talk-all-day job, I'd take the UH37; if my headset doubles as my headphones, I'd take the Blackwire 3320.
It's a hi-fi stereo, on-ear headset with 180-degree pivoting speakers. The Yealink UH37, by contrast, is a mono headset, so audio comes through one earpiece.
Yes. The UH37 is a wired USB/USB-C headset and the model is listed as USB-C/A, so it covers both connection types. The Blackwire 3320 uses USB-C with an included USB-C to USB-A adapter.
On paper the Yealink UH37 leans harder into noise handling: dual noise-cancelling microphones, hybrid noise cancellation, and oval noise-isolating foam ear pads. The Blackwire 3320 lists active noise cancellation, but the UH37's specs are more explicitly built around call clarity in a busy room.
I'd lean toward the Yealink UH37 at 96.5 g with a metal headband and leather ear pads, since weight is the thing you feel most over a long shift. If you need stereo audio during those hours, the Blackwire 3320's padded headband and pillow-soft cushions are the trade-off worth making.
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