We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 7 min read · Independent comparison
If you want an all-in-one corded USB headset that works out of the box with softphones and video calls, choose Discover D712U; if you need a USB adapter that upgrades an existing Poly Quick Disconnect headset with Teams controls and acoustic protection, choose PLT Poly.
• Discover D712U — biggest strength: A complete plug-and-play USB headset with a noise-canceling mic, dual speakers, and on-cord volume and mute/call controls, so you're ready to talk the moment you plug in.
• Discover D712U — biggest trade-off: It's a wired, USB-only headset with passive noise cancellation — no active noise canceling, no wireless option in practice, and it only works with devices that accept a USB connection.
• PLT Poly — biggest strength: A digital USB-A/USB-C adapter that turns a compatible Poly Quick Disconnect headset into a Teams-ready device with native call answer and hold buttons plus acoustic hearing protection.
• PLT Poly — biggest trade-off: It is not a headset. Without a compatible Poly QD headset, the adapter does nothing, so it only makes sense if you already own (or plan to buy) one.
• Who Discover D712U is for: Anyone who needs one ready-to-go headset for a PC, laptop, or Mac and doesn't want to assemble a system.
• Who PLT Poly is for: Existing Poly QD headset owners, call centers, and IT teams standardizing on Microsoft Teams who want to reuse their current headsets.
The Discover D712U is a corded USB headset built around one idea: get you on calls with as little friction as possible. It connects over USB, and the design is plug-and-play — the drivers load automatically, so you don't need to install or download extra software. That matters in locked-down office environments where IT restricts what you can install. It's listed as compatible with Microsoft Teams, RingCentral, Webex, Jabber, Avaya, Zoom, 3CX, and most other softphone clients, running on a PC, laptop, or Mac.
Comfort is the other headline. You get dual speakers that rest over your ears with soft leatherette or foam ear cushions, plus an adjustable padded headband, so it's built for people who wear a headset for hours rather than minutes. The microphone is noise-canceling, which is the feature that actually earns its keep in a busy office, a call center, or a noisy home workspace: when the background noise rises, your caller hears you and not the room. On top of that, the in-line control lets you adjust volume, mute and unmute, and answer or end calls in compatible softphone apps. The audio driver is a dynamic driver covering 20 Hz to 20,000 Hz — a full-range spec that's fine for voice and video work. It's also built to survive daily use in high-demand offices, and it's backed by a three-year warranty with US-based tech support through the seller.
Who should buy it: the professional, call center agent, or remote worker who wants one device, one cable, and clear calls today. Who should skip it: if you already own a Poly Quick Disconnect headset you love, or you need wireless freedom, this isn't the route for you — it's a wired USB headset, and passive noise cancellation only goes so far.
The PLT Poly (model 218268-01) is a DA85M USB-A/USB-C digital adapter, and the single most important thing to understand is that it is a bridge, not a headset. Its job is to connect a Poly call center Quick Disconnect headset to your computer and make that headset behave like a modern, cloud-ready device. If you don't have a compatible Poly QD headset, this product has nothing to do.
Where it earns its place is in call centers and work-from-home setups moving to cloud communications. The DA85M delivers a native Microsoft Teams experience accessed right from the adapter itself, and it adds built-in Hold and Call Answer buttons so you're not hunting through software to manage a call. It also uses intelligent headset recognition: it detects the specific Poly headset attached and adjusts audio performance to match it, rather than applying one generic profile to everything. That's a subtle but real advantage when you're standardizing across a team with mixed headsets.
The other feature worth calling out is acoustic protection. The adapter manages safe volume to protect hearing over long shifts — the kind of thing that matters to an employer equipping dozens or hundreds of agents, and to anyone who spends their whole day on calls. On connectivity, it's genuinely flexible: both USB-A and USB-C connectors sit right on the cable, so the same adapter works with new laptops and legacy desktops alike, and it's fully backwards compatible with any Poly Quick Disconnect headset. It's small and light — roughly 2.95 x 0.98 x 0.39 inches and 2.4 ounces — with a two-year manufacturer warranty.
Who should buy it: call center employees working from home, IT buyers rolling out Teams, and anyone with a Poly QD headset they want to keep using. Who should skip it: anyone without a compatible Poly headset, or anyone who just wants a headset in a box.
Side-by-Side: Which Should You Choose?
• Best for getting on calls immediately → Discover D712U. It's a complete headset; plug it in and talk.
• Best for Microsoft Teams call handling → PLT Poly. Native Teams access from the adapter, with dedicated Hold and Call Answer buttons.
• Best for long-wear comfort out of the box → Discover D712U. Adjustable padded headband plus soft leatherette or foam ear cushions, designed for all-day wear.
• Best for hearing protection at scale → PLT Poly. Acoustic protection manages safe volume across an organization.
• Best for mixed old and new computers → PLT Poly. USB-A and USB-C connectors on the cable cover both.
• Best for a single user with a PC, laptop, or Mac → Discover D712U. Broad softphone compatibility and no software to install.
• Best for a team standardizing on one headset platform → PLT Poly. Intelligent headset recognition tunes audio to each attached Poly headset.
In my opinion, most individual buyers should get the Discover D712U. It solves the whole problem on its own — a comfortable over-ear corded headset with a noise-canceling mic, working controls, wide softphone compatibility, and a three-year warranty — with no dependency on gear you may not own. I'd only steer you to the PLT Poly if you already have a Poly Quick Disconnect headset or you're outfitting a call center on Teams, where its native Teams controls, USB-A/USB-C flexibility, and acoustic protection are exactly what the job needs. Buy the D712U to start calling today; buy the DA85M to make the Poly headset you already own better.
For most home users, the Discover D712U is the simpler pick because it's a complete plug-and-play USB headset with a noise-canceling mic and no extra hardware required. The PLT Poly only helps if you already own a compatible Poly QD headset.
Do I need a separate headset to use the PLT Poly adapter?
Yes. The DA85M is an adapter, not a headset. It's designed for Poly call center Quick Disconnect headsets and is fully backwards compatible with them, but it won't function as a standalone audio device.
No. It's plug-and-play over USB — the drivers load automatically when you connect it to a PC, laptop, or Mac, which is helpful in workplaces that restrict software downloads. Controls for volume, mute, and answer/end work in compatible softphone apps.
The two products aren't really substitutes — one is a headset, the other an adapter — so compare them on what you already own rather than on cost alone. If you're unsure, check the current price on Amazon using the button on this page, then decide whether you need a full headset or just the adapter.
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.
See also: ASKUBSKU USB C Headphones vs ABCPOW Earbuds USB C, ASTRO Logitech G A10 vs ETWAR B3, Bowers & Wilkins Px7 vs iKF Mars, CONVELIFE ATH-M70X vs Sony WH-CH520: Studio Monitor