How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 6 min read · Independent comparison
• Cisco Headset 321Q — biggest strength: A Microsoft Teams-certified, wired USB-A headset with a dedicated Teams button that joins meetings, answers, ends and holds calls, plus LED and in-ear alerts when a meeting is starting.
• Cisco Headset 321Q — biggest trade-off: It's a single on-ear cup, so you get one ear open to your surroundings rather than full stereo isolation, and its frequency range is tuned for voice (300 Hz – 3,000 Hz), not music.
• PLT HP — biggest strength: A stereo dual-ear design (BlackWire 3320) that seals you into the call, ships with a USB-C/A adapter, and is also Microsoft Teams certified.
• PLT HP — biggest trade-off: The supplied spec sheet is thin — it lists materials, weight and an adapter, but no frequency range, mic detail or noise-control claims, so you're buying on the design and the adapter flexibility rather than documented audio specs.
• Who each pick is for: Cisco Headset 321Q for the Teams-heavy desk worker who wants one ear free and a join button; PLT HP for the buyer who wants both ears covered and a headset that works with either USB-C or USB-A ports out of the box.
The Cisco Headset 321Q is a wired, single on-ear headset built around one idea: making Microsoft Teams meetings faster to get into. The headline feature is the dedicated Teams button. It joins a meeting, and it also answers, ends and holds calls. When a meeting is about to start, the headset alerts you — the LED button lights up and you get an in-ear notification. In an office where your calendar is back-to-back, that's a small thing that saves a real amount of fumbling.
Audio and comfort are aimed at voice, not entertainment. The single ear cup is lightweight, and Cisco calls out passive noise suppression and clear audio. The mic is a uni-directional ECM noise-cancelling design, which means it's pointed at your mouth and works to keep the room around you out of the call. The stated frequency range is 300 Hz to 3,000 Hz — that's the speech band, exactly what you want for calls and not what you want for music.
Setup is plug-and-play over USB-A, and the headset is certified for Microsoft Teams, so the controls line up with the app rather than acting as generic buttons. Cisco also leans on deployment and manageability — it's pitched as easy to roll out, manage and service, with a two-year limited liability warranty, spare ear cushions available, and support through Cisco's team. Buy it if you live in Teams, sit at a desk, and want one ear open. Skip it if you want stereo sound for media, or if your machine only has USB-C and you don't want to deal with an adapter.
PLT HP here is the Poly BlackWire 3320 — a stereo, Microsoft Teams-certified headset that ships with a USB-C/A adapter. That adapter is the practical heart of the pitch: the headset works whether your laptop, dock or desk phone has a USB-C port or an older USB-A one, so you're not locked into one connector type or hunting for a dongle. For anyone splitting time between a newer laptop and an older docking station, that flexibility matters more than it sounds.
It's a dual-ear, stereo design, so both ears are covered. That's the opposite philosophy from the Cisco's single cup: instead of keeping one ear on the room, the BlackWire 3320 is built to shut the room out and put the call in both ears. The spec sheet lists it in Black/White, made of plastic, at 130 g, and confirms Teams certification. It's also lighter on paper than the Cisco's listed 0.18 kg.
Here's the honest caveat: the data available for this model is thin. There's no frequency range, no mic description, and no noise-control claim in the sheet — just the stereo Teams-certified design, the adapter, the weight and the materials. That doesn't mean it's worse; it means you can't compare it on published audio specs the way you can the Cisco. Buy it if you want both ears covered, stereo Teams-certified audio, and connector flexibility in one box. Skip it if you specifically want one ear open to your surroundings, or if you want a documented voice-tuned frequency range to judge before you buy.
• Best for Microsoft Teams meeting control → Cisco Headset 321Q. The dedicated Teams button joins, answers, ends and holds calls, with LED and in-ear meeting alerts.
• Best for keeping one ear on your surroundings → Cisco Headset 321Q. The single on-ear cup is the whole point of the design.
• Best for focus and stereo audio → PLT HP. Dual-ear stereo coverage seals you into the call.
• Best for connector flexibility → PLT HP. The included USB-C/A adapter covers both port types; the Cisco is USB-A only.
• Best for documented voice tuning → Cisco Headset 321Q. It publishes a 300 Hz – 3,000 Hz speech-band range and a uni-directional ECM noise-cancelling mic.
• Best for mixed device fleets → PLT HP. One headset, either port, Teams certified.
• Best if you hate hunting for adapters → PLT HP. The adapter is in the box.
• Best if you want one ear free and a join button on your desk → Cisco Headset 321Q.
If I had to pick one, I'd buy the Cisco Headset 321Q — but only because of how I'd use it. For a desk job that runs on Microsoft Teams, the join button, the meeting alerts and the voice-tuned mic are the features I'd actually touch every day, and the single ear cup keeps me reachable in an open office. In my opinion, that combination is hard to beat for pure Teams desk work. If you'd rather have both ears covered, listen to stereo audio, or need to move between USB-C and USB-A machines without thinking about it, I'd go with the PLT HP instead. Check the current price on Amazon for both before you commit — the numbers move, and the right call depends on which of those two jobs matches your day.
FAQ
No. It's a single on-ear cup with a 300 Hz – 3,000 Hz range tuned for voice. If you want stereo, the PLT HP's dual-ear design is the one to look at.
Yes — that's the point of the USB-C/A adapter included with it. The Cisco Headset 321Q is USB-A only, so you'd need your own adapter for a USB-C-only machine.
On the published figures, the PLT HP is listed at 130 g, while the Cisco Headset 321Q is listed at 0.18 kg (180 g). The Cisco's open single-cup design still keeps one ear uncovered, so comfort over a long shift comes down to whether you prefer open or sealed.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.