The Poly EncorePro 320 covers both ears A mono headset works fine until the floor gets loud enough that one open ear stops being a feature and starts being a distraction — the neighbor's call bleeding into yours, the printer, the general hum of forty people talking at once. The Poly EncorePro 320 is the fix built for exactly that moment: the stereo model in Poly's EncorePro 300 series, covering both ears so the room fades and the call is what's left. It's the binaural sibling of the EncorePro 310, built on the same entry-tier platform — the same noise-canceling boom mic, the same acoustic protection against sudden line noise, the same Dynamic Mute Alert that speaks up if you start talking while muted. The difference is one ear or two, and it comes in two connection types: Quick Disconnect for desk phones, and USB-A for softphones. Build the exact EncorePro 320 you need Two connection types — pick based on what you're actually plugging into. Quick Disconnect (QD) — 77T26AA. For desk phones. Requires a Plantronics M22 Vista amplifier or bottom cable between the headset and the phone, purchased separately. The QD connector is rated for heavy daily disconnect use. [icon:usb-a] USB-A, UC — 767G0AA. Plugs straight into a computer for softphone use. Includes inline controls for answer/end, volume, and mute, plus the Dynamic Mute Alert. Works with major UC platforms out of the box. EncorePro 320 or the mono EncorePro 310? Most people default to the mono EncorePro 310 because it's the familiar shape of a call center headset — but on a genuinely loud floor, that open ear is picking up everything the stereo model would have blocked. Per IP Phone Warehouse's breakdown of the EncorePro 300 series, mono headsets leave an ear open so the wearer stays in touch with their surroundings, while stereo headsets improve focus by covering both ears. The right call depends on how loud your floor actually is, not which one looks more like the headset everyone already owns. [compare] EncorePro 320 — stereo (both ears)Covers both ears to block more room noise and sharpen focus. For open floors, high call volume, or agents who report the room is distracting. EncorePro 310 — mono (one ear)Leaves one ear open to stay aware of a supervisor or nearby colleague. For quieter offices or roles that need to hear the room too. [/compare] Neither the EncorePro 320 nor the EncorePro 310 uses active noise cancellation — the stereo model's advantage is passive isolation from covering both ears, not electronics erasing the room. It's real, but it's a physical seal, not ANC. The QD version needs an amplifier or cable [callout type="honest"]The EncorePro 320 QD requires a Plantronics M22 Vista amplifier or a bottom cable to connect to a desk phone — neither is included, so budget for it separately. There's also a wrinkle worth checking before you order for the mute alert specifically: Poly's own listings describe the Dynamic Mute Alert on the USB version clearly, but some manufacturer spec sheets mark that feature USB-only. If the verbal mute alert is the reason you're choosing the EncorePro 320, confirm with your supplier whether the QD version carries it before committing to that connection type.[/callout] Built for the disconnect-heavy shift The same durability the EncorePro 310 carries applies here — a Quick Disconnect connector built for repeated unplugging through a shift, SoundGuard acoustic protection (SoundGuard Digital with G616 on the USB version) limiting sudden spikes above 118 dBA, and wideband audio up to 6,800 Hz so voices come through clear rather than compressed. Foam ear cushions are replaceable, which keeps a shared fleet running without swapping whole headsets over a worn cushion. Manage a fleet without walking the floor [card title="Optional fleet management"]The USB version of the EncorePro 320 works with Plantronics Hub for basic setup and firmware. For larger contact centers, Poly's Manager Pro software (sold separately) lets IT remotely configure, monitor, and maintain every headset on the floor — worth it once you're deploying more than a handful of seats.[/card] The EncorePro 320 is the headset for a floor where a mono model isn't cutting it anymore — both ears covered for real focus, the same mute-alert safety net as its mono sibling, and a QD connector built to survive the disconnect-heavy pace of a call center shift. Pick the connection that matches your phones or your computers, and it's ready to deploy, backed by HeadsetPlus's lifetime support. Poly EncorePro 320 stereo headset with flexible noise-canceling boom mic Foam ear cushions (fitted, both ears, replaceable) Quick start guide The QD version does not include the M22 Vista amplifier or bottom cable — that's purchased separately. The USB-A version includes the attached cable with inline controls; no external adapter needed. Type Binaural (stereo, both-ear), over-the-head, on-ear Series Poly EncorePro 300 Series (entry tier) Microphone Flexible noise-canceling boom, voice-optimized frequency response Connector QD (Quick Disconnect) or USB-A QD connection Requires a Plantronics M22 Vista amplifier or bottom cable, sold separately Controls (USB version) Inline answer/end, volume, mute; Dynamic Mute Alert Noise handling Passive isolation from covering both ears (not active noise cancellation); noise-canceling microphone for outgoing voice Audio Wideband up to 6,800 Hz Acoustic protection SoundGuard; SoundGuard Digital with G616 on the USB version — limits spikes above 118 dBA Comfort Soft foam ear cushions on both ears (replaceable), lightweight build Software Plantronics Hub (USB version); Poly Manager Pro for remote fleet management (sold separately) Platform (USB version) Windows and macOS compatible; UC-certified for major softphone platforms Mono alternative EncorePro 310 (single-ear version, same series) Part numbers QD: 77T26AA (old 214573-01); USB-A: 767G0AA (old 214570-01) Warranty Manufacturer warranty, plus HeadsetPlus lifetime technical support Software. The USB-A version of the EncorePro 320 works with Plantronics Hub for setup and firmware, and is UC-certified for major softphone platforms. Poly Manager Pro (sold separately) adds remote configuration and monitoring across a full fleet. Hardware. The QD version connects to a desk phone through a Plantronics M22 Vista amplifier or bottom cable, purchased separately and matched to your phone. The USB-A version connects directly to a computer with no external hardware required. Platforms. The EncorePro 320 suits call centers and offices where room noise is a real problem — open floors, high call volume, and any environment where a mono headset was already leaving too much noise on the line. Does the EncorePro 320 need an amplifier?The QD version of the Poly EncorePro 320 requires a Plantronics M22 Vista amplifier or a bottom cable to connect to a desk phone, and neither is included — both are sold separately. The USB-A version needs no amplifier; it connects directly to a computer. What's the difference between the EncorePro 320 and the EncorePro 310?The EncorePro 320 is stereo, covering both ears to block more room noise and improve focus. The EncorePro 310 is mono, leaving one ear open to stay aware of the room. Both are in Poly's EncorePro 300 series and share the same connector options and Dynamic Mute Alert. Does the EncorePro 320 have active noise cancellation?No. The Poly EncorePro 320 uses passive isolation from covering both ears, not active noise cancellation. Its microphone is separately noise-canceling for outgoing voice, but there's no electronic system blocking the room the way ANC headsets do. Is the Dynamic Mute Alert available on the EncorePro 320 QD?It's confirmed on the USB-A version of the EncorePro 320. Some manufacturer spec sheets list the Dynamic Mute Alert as USB-only, so if that feature is the deciding factor, confirm with your supplier whether the QD version includes it before choosing that connection type. Does the EncorePro 320 work with softphones?Yes. The USB-A version of the EncorePro 320 connects directly to a computer and is UC-certified for major softphone and UC platforms, with inline controls for answer/end, volume, and mute built into the cable.
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