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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-30 · 6 min read · Independent comparison
• Jabra Engage 50 — biggest strength: a multifunctional Link call control unit with wheel volume, call/mute/hold, a re-programmable Busylight and a speed dial button, all over a single USB-C connection.
• Jabra Engage 50 — biggest trade-off: it's a control unit rather than a full headset kit on its own, and connectivity is wired USB-C only.
• Hewlett Poly Blackwire 3325 — biggest strength: plug-and-play USB-C and USB-A plus a 3.5 mm option, a 7 ft cable, and a noise-canceling omni boom mic with SoundGuard and Acoustic Fence.
• Hewlett Poly Blackwire 3325 — biggest trade-off: no dedicated control unit with a Busylight or speed dial, so call handling lives on your softphone instead of your desk.
• Pick Jabra Engage 50 if you live in Microsoft Teams all day and want tactile call control.
• Pick Hewlett Poly Blackwire 3325 if you want one headset that follows you between laptop, desk phone jack and mobile.
The Jabra Engage 50 II Link is built around one idea: put call control on your desk instead of inside a software window. The unit connects your Engage 50 II mono or stereo headset to a computer or mobile device through a USB-C cable, and once it's there you get a wheel for volume, dedicated call, mute and hold buttons, a re-programmable Busylight, and a speed dial button for supported contact center platforms. That's a lot of physical control in a 68 g package.
The Microsoft Teams story is the part I'd pay attention to. The controller is certified for Teams, and its LED behaves as a status light: purple when connected, pulsing purple when you have a notification, and green when you're live on a call. If you spend your day bouncing between meetings, that single light tells you your state without you hunting for a window. The headset side runs a dynamic driver across a 20 Hz to 20,000 Hz range, with active noise cancellation listed under noise control. It's on-ear with over-ear style cups in black plastic, and Jabra backs it with a 3-year manufacturer warranty.
Hewlett Poly Blackwire 3325: Who It's For
The Blackwire 3325 takes the opposite approach: flexibility first. It ships with a USB-C/A adapter and also accepts a 3.5 mm mini-phone connection, so the same headset can go into a laptop over USB or into a jack when that's what's in front of you. The cable is 7 ft, which is the kind of detail that matters more than people admit — you can lean, pace a little, or reach a drawer without yanking the plug out of your port.
On audio, Poly leans on processing rather than a control box. You get Dynamic EQ, Digital Signal Processing, SoundGuard Technology and Acoustic Fence Technology working on call clarity, plus an omni-directional boom microphone with noise canceling and echo reduction. The boom rotates, which helps you place the mic where your voice actually is. The headset is stereo, on-ear, binaural with ear-cup design, rated at 32 Ohm impedance and a 20 Hz to 20 kHz frequency range — the same span as the Jabra, but tuned for voice work and multimedia rather than a control-unit workflow. It's also Microsoft Teams certified with plug-and-play USB-C and USB-A.
Who should buy it? Hybrid workers, small-office users and anyone who takes calls on different machines through the week. Students and remote staff who want one headset for meetings and music will appreciate the stereo drivers and the simple connection story. Who should skip it? If your job is a queue of calls and you want a hardware mute button and a Busylight staring back at you, this isn't that product — call handling stays in your softphone. It's also the lighter, more portable-feeling option at 8.8 ounces and 8.3 x 7.3 x 2.2 inches, which cuts both ways: easy to toss in a bag, less of a permanent desk fixture.
• Best for physical call control → Jabra Engage 50. Wheel volume, call, mute, hold and speed dial on the desk unit.
• Best for connection flexibility → Hewlett Poly Blackwire 3325. USB-C, USB-A and 3.5 mm, with a 7 ft cable.
• Best for Microsoft Teams status visibility → Jabra Engage 50. The LED goes purple, pulses purple, and turns green on a call.
• Best for noise and voice processing features → Hewlett Poly Blackwire 3325. Dynamic EQ, DSP, SoundGuard, Acoustic Fence and a rotating noise-canceling boom mic.
• Best for shared or multi-device desks → Hewlett Poly Blackwire 3325. Plug-and-play across USB and analog without a control unit to manage.
• Best for contact center and high call-volume roles → Jabra Engage 50. Speed dial for supported platforms plus hold and mute within reach.
• Best for lighter travel and portability → Hewlett Poly Blackwire 3325. 8.8 oz, compact footprint, one cable to carry.
• Best for long-term desk deployment → Jabra Engage 50. A 3-year manufacturer warranty and a fixed control unit that stays put.
If I had to buy one, I'd take the Jabra Engage 50 II Link for a job that's mostly calls. In my opinion, the wheel, the mute and hold buttons, the speed dial and the Teams Busylight do more for daily call handling than any single audio feature — you stop thinking about your software and start using your hands. I'd recommend the Hewlett Poly Blackwire 3325 instead if your week is split across devices and jacks, or if you want one headset that doubles for music and travel. Different jobs, different tools. Neither is "better" in the abstract; pick the workflow you actually have.
Both are certified for Microsoft Teams. The Jabra adds a control unit whose LED shows connection, notification and active-call states, while the Poly relies on plug-and-play USB-C/USB-A and your Teams app for call handling.
Does the Poly Blackwire 3325 work with a 3.5 mm jack?
Yes. It supports mini-phone 3.5 mm as well as USB Type-C, and ships with a USB-C/A adapter, so it covers laptops, adapters and analog jacks. The Jabra Engage 50 II Link connects over USB-C.
I don't quote prices here. Value depends on whether you'll use the Jabra's control unit — if you won't, the Poly's flexibility is the smarter spend. Check the current price on Amazon for both before deciding.
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