We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-05 · 7 min read · Independent comparison
If you want a wired headset that pivots to fit however you actually wear it and connects to almost any PC or Mac you already own, choose PLT Poly Blackwire 3320; if you need a dual-mic Teams headset with a metal-reinforced frame and a wider-range 35mm driver, choose Yealink UH35. Both are wired USB office headsets built for calls, and neither is made for running — so if you're hunting for extra bass gaming headphones for running, or the best USB-C charging on-ear headphones for running, you're looking at the wrong category. I'll say that plainly up front, then explain who each of these two really fits.
• PLT Poly Blackwire 3320 — biggest strength: USB-C and USB-A in the box (via the included adapter), plus 180-degree pivoting speakers and a flexible boom, so it adapts to different head shapes and different ports.
• PLT Poly Blackwire 3320 — biggest trade-off: its frequency response tops out at 10 KHz, so it's tuned for voice clarity rather than full-range music, and it's on-ear rather than over-ear.
• Yealink UH35 — biggest strength: a 35mm dynamic driver with a 20 Hz–20,000 Hz range and a dual noise-cancelling mic array, so it handles music and calls with more low-end reach.
• Yealink UH35 — biggest trade-off: USB-C only — no USB-A adapter is listed — so older USB-A-only laptops need their own dongle or hub.
• Who the Blackwire 3320 is for: the person who wants one headset that works across mixed hardware and wears comfortably for long shifts.
• Who the UH35 is for: the Teams-first desk worker who wants richer audio and a sturdier, metal-reinforced build.
The Blackwire 3320 is the flexible one. The headline feature here is connectivity: it plugs into a PC or Mac over USB-C, and Poly throws in a USB-C to USB-A adapter so the same headset works on the older USB-A ports that are still all over office desks. That single detail matters more than it sounds. If you move between a newer laptop and a dock or desktop with the old rectangular port, you don't have to think about it — one headset, both worlds. No dongle hunting.
Audio-wise, Poly leans on its signature tuning for voice. The frequency response is listed at 10 KHz, which tells you the priority is speech intelligibility, not thumping bass. For Teams calls, dictation, and video meetings, that's exactly right. It's certified for Microsoft Teams with a dedicated Teams button that jumps straight into the app, and it has active noise cancellation plus a push-button volume control on the cord.
Buy it if: you split time between USB-C and USB-A machines, you want a headset that physically adjusts to your head, and you spend your day on calls. Skip it if: you want a headset for music with real low-end extension, or you specifically want over-ear passive isolation.
Yealink UH35: Who It's For
The UH35 is the more audio-forward of the two. Its 35mm dynamic driver is rated across a full 20 Hz to 20,000 Hz range — that's the kind of spec you see on headphones meant for music, not just speech. So if you listen to playlists between calls, or you do video editing and want to hear what you're cutting, this is the pick with more range. The driver is efficient too, with a low 4.8 ohm impedance.
The microphone setup is where Yealink makes its case. It runs two microphones with advanced noise cancellation, so it isolates your voice from background chatter. That dual-mic approach is a real design choice, not marketing filler — two mics let the headset compare what's coming in and reject the noise that isn't you. On top of that, the oval foam ear pads are noise-isolating, giving you passive noise cancellation. Passive means it blocks sound by physically sealing your ear, not by electronics, and for a wired office headset that's often enough to dull an open-plan office.
Build quality is a genuine differentiator. Yealink says it's made from high-quality plastic reinforced with a metal frame, and it uses a leather headband with skin-friendly, soft memory foam ear pads. That combination is aimed squarely at extended wear. At 139.5 g it's a touch heavier than the Poly, but the memory foam and metal frame suggest it's built to take daily abuse. It also has a highly visible busylight — red LEDs that tell the room you're on a call. It's Microsoft Teams certified, ships with a carry bag and manual, and connects over USB-C (wired).
Buy it if: you want fuller-range audio, a strong dual-mic noise-cancelling setup, and a sturdier frame. Skip it if: you still rely on USB-A ports, since only USB-C connectivity is listed.
• Best for mixed USB-C and USB-A hardware → PLT Poly Blackwire 3320. The included adapter is the deciding factor for older machines.
• Best for music and full-range audio → Yealink UH35. A 20 Hz–20,000 Hz driver beats a 10 KHz ceiling for anything with bass.
• Best for mic noise rejection → Yealink UH35. Dual noise-cancelling mics versus a single flexible boom.
• Best for adjustable fit → PLT Poly Blackwire 3320. 180-degree pivoting speakers and a bendable boom let you dial in the position.
• Best for passive isolation → Yealink UH35. Oval foam ear pads block ambient noise physically.
• Best for long-wear comfort → both, honestly. Poly uses plush padding and low weight; Yealink uses memory foam and a leather headband.
• Best for durability → Yealink UH35. The metal-reinforced frame is built for daily desk life.
• Best for instant Teams access → PLT Poly Blackwire 3320. The dedicated Teams button is a one-press shortcut.
• Best for an open office → Yealink UH35. The red busylight signals "on a call" without you saying a word.
One thing I want to be clear about: if what you actually want is noise cancelling gaming headphones for running, or any headphone for running, neither of these belongs in that conversation. There's no battery, no Bluetooth, no charging port — they're wired USB desk headsets. Buying either for workouts would be a mistake.
If I had to pick one, I'd buy the Yealink UH35 — for running it's irrelevant, but for the job it's actually built for, its full-range 35mm driver, dual noise-cancelling mics, memory-foam comfort, and metal-reinforced frame give me more headset for the same basic purpose. That said, my honest exception is this: if your setup still includes USB-A ports, the PLT Poly Blackwire 3320 wins on practicality alone, because the included adapter means it just works everywhere. Match the headset to your ports and your audio needs, not to a spec sheet you'll never use.
Both are Teams-certified and built for voice. The UH35 adds a dual noise-cancelling mic array, which should reject more background noise; the Blackwire 3320 counters with a flexible boom you can position precisely and a one-press Teams button.
Only USB-C connectivity is listed for the UH35, so a USB-A-only machine would need its own adapter or hub. The Blackwire 3320 ships with a USB-C to USB-A adapter, so it covers both out of the box.
The Yealink UH35, in my opinion. Its driver spans 20 Hz to 20,000 Hz, while the Blackwire 3320 is listed at 10 KHz — so the UH35 has more low-end and treble reach for music.
No. Both are wired USB headsets, so there's no battery and nothing to charge — they draw power from the USB connection. That's also why neither is suited to running or workouts.
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