We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-06 · 6 min read · Independent comparison
If you want a proven, single-ear wired headset that plugs into a standard USB-A port and is certified for Microsoft Teams, choose PLT Plantronics; if you need an affordable dual-ear USB-C headset with a boom mic built for all-day call center work, choose acer USB Headset.
• PLT Plantronics Blackwire 3310 — biggest strength: mono over-ear design with wideband audio, noise-canceling mic, enhanced DSP, SoundGuard acoustic limiting, and Teams certification over USB-A. Biggest trade-off: it's a single-ear headset, so it doesn't isolate you from a noisy room the way a dual-ear model can.
• acer USB Headset (OHW327) — biggest strength: lightweight on-ear build with soft leather cushions, a 270° rotatable noise-reducing boom mic, and reversible left/right wear over a USB-C connection. Biggest trade-off: it's a newer, less-established option in this category and uses USB-C only, so older PCs and docks without USB-C need an adapter.
• Who PLT Plantronics is for: the professional on a PC or Mac who wants a dependable mono headset they can wear for hours and use for team calls all day.
• Who acer USB Headset is for: the call center agent or heavy phone worker who wants both ears covered, a flexible mic, and a modern USB-C plug.
The Blackwire 3310 is a single-ear (monaural) over-the-head headset that connects to a PC or Mac through USB-A. That USB-A connection matters: it's the port most older desktops, laptops, and office docking stations still have, so plugging in is genuinely plug-and-play. It's certified for Microsoft Teams and compatible with other leading collaboration and voice platforms, which makes it a sensible default if your employer runs Teams and you don't want to think about whether your headset will behave.
The audio story here is the real draw. PLT specifies wideband audio, a flexible noise-canceling microphone, and enhanced digital signal processing, so your voice should come through clear and natural on calls. There's also SoundGuard, acoustic limiting designed to protect your ears from sounds above 118 dBA — a detail that matters if you take calls all day at a desk. The headset uses 32-ohm dynamic drivers with a 20 Hz to 20,000 Hz frequency range, and the padded headband, soft foam cushions, 180-degree pivoting speakers, and flexible mic boom let you dial in a fit that stays comfortable.
Who should buy it? In my opinion, this is the pick for a professional who wants one ear free to hear what's happening around them — a support agent, a recruiter, a manager who takes calls between meetings — and who needs to plug into a standard USB-A port and start working. Who should skip it? If you work in a loud, open office and need both ears covered to focus, or if your machine is USB-C only, this isn't the headset for you. It ships with a 2-year warranty and weighs about 4.8 ounces.
The acer OHW327 is a dual-ear, on-ear headset that connects over USB-C. It's wired, with a straightforward button control, and it's built explicitly around the idea of wearing it for a full shift. The frame is lightweight, the headband adjusts, and the ear cushions use soft premium leather with breathable materials, which is the kind of spec that points toward a pressure-free fit through long meetings and back-to-back customer calls. If you've been searching for a neckband headphone or a touch control over-ear headphone for call center work, this isn't that — but as a plain, comfortable, dual-ear wired headset, it lines up squarely with what a call center desk actually needs.
The microphone is the other headline. It's a unidirectional boom mic tuned to capture your voice clearly while minimizing background noise, and it rotates 270 degrees. The headset is also reversible, so you can wear the mic on your left or right side depending on how your desk and phone are set up. Inside, there are 40mm dynamic drivers — larger than the drivers on the PLT — which generally means a fuller, louder sound for both calls and whatever else you play through them.
Who should buy it? The call center agent or office worker on a USB-C machine who wants both ears covered, a mic they can swing out of the way, and a fit that's meant to survive a full workday. Acer lists broad compatibility with Microsoft Teams, Zoom, Skype, Google Meet, and Webex, so it slots into most softphone setups. Who should skip it? Anyone whose PC or dock only has USB-A, since you'd need an adapter, and anyone who specifically wants a single-ear design. It carries a 1-year warranty.
• Best for a standard USB-A port → PLT Plantronics. The Blackwire 3310 is USB-A out of the box; the acer is USB-C only.
• Best for covering both ears → acer USB Headset. It's dual-ear on-ear; the PLT is intentionally single-ear.
• Best for teams/softphone certification → PLT Plantronics. It's certified for Microsoft Teams and works with other leading collaboration platforms.
• Best for a flexible, noise-reducing boom mic → acer USB Headset. The 270° rotatable unidirectional mic and reversible design give left/right wearing options the PLT doesn't.
• Best for hearing your surroundings → PLT Plantronics. Keeping one ear open is the whole point of a mono headset.
• Best for acoustic safety features → PLT Plantronics. SoundGuard limiting protects against sounds above 118 dBA.
• Best for a lightweight, all-day-wear dual-ear fit → acer USB Headset. Lightweight frame, adjustable headband, breathable leather cushions.
• Best for longer warranty coverage → PLT Plantronics. A 2-year warranty versus 1 year on the acer.
If I were buying for myself and I worked a PC or Mac through a standard USB-A port — especially on a Teams-heavy setup — I'd get the PLT Plantronics Blackwire 3310. The mono design keeps me aware of my surroundings, the noise-canceling mic and DSP handle call clarity, and SoundGuard plus the 2-year warranty give me peace of mind. If I were staffing a call center with USB-C machines and wanted both ears covered all day, I'd choose the acer USB Headset for its flexible boom mic, reversible fit, and lightweight comfort. For a call center where agents live on the line, the acer is the more purpose-built daily driver; for everything else, the PLT is my pick.
For a call center specifically, the acer USB Headset is the more natural fit because it's dual-ear, lightweight, and built around all-day wear with a flexible noise-reducing boom mic. The PLT is better if you need one ear open or a USB-A connection.
The PLT Plantronics Blackwire 3310 is certified for Microsoft Teams and compatible with other leading collaboration platforms. The acer OHW327 lists broad compatibility with Teams, Zoom, Skype, Google Meet, and Webex. Both are designed for common softphone setups.
The PLT uses USB-A, which is the standard rectangular port on most older PCs and docks. The acer uses USB-C, the newer oval connector. Match the headset to the port you actually have, or plan on an adapter if you're mixing the two.
A single-ear headset like the PLT keeps you aware of your surroundings and is common for professionals who juggle calls and in-person conversations. A dual-ear headset like the acer blocks more of the room, which helps focus in a noisy office. It comes down to whether you want to hear what's around you.
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