

Poly Blackwire 3325 Stereo USB-C Headset +3.5mm Plug +USB-C/A Adapter, Noise cancelling Microphone | 8X221AA
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Description
The Poly Blackwire 3325 (8X221AA) is a versatile, professional-grade stereo headset designed for seamless communication across all your devices. Featuring "plug-and-play" connectivity via USB-C, USB-A, and 3.5mm jack, it offers the ultimate flexibility for switching between PC, tablet, and mobile calls. With its signature comfort-first design and a high-quality noise-canceling microphone, it is the ideal choice for enterprise-level unified communications and hybrid office environments.
Experience professional-grade audio and all-day comfort with the Poly Blackwire 3325. Part of the acclaimed Blackwire 3300 Series, the 8X221AA model is engineered for workers who demand reliability and versatility. Its sleek, modern design isn't just for looks—it’s built for durability and ease of use in fast-paced call centers or quiet home offices. Whether you're in a Microsoft Teams meeting or listening to music between tasks, the Blackwire 3325 delivers high-quality stereo sound with minimal setup.
Key Features
Universal Connectivity: This 3-in-1 solution features a native USB-C connector with an included USB-A adapter, plus a 3.5mm plug for mobile devices. It’s a single headset that works with your legacy hardware and the latest laptops.
Pro-Grade Noise Cancellation: The flexible microphone boom filters out background noise, ensuring your voice is heard clearly by clients and colleagues without the distractions of office chatter or household sounds.
Signature Poly Comfort: Lightweight design meets luxury. The soft leatherette ear cushions and a padded headband allow for hours of comfortable wear, making it easy to forget you're even wearing a headset.
Fully Adjustable: The 180-degree pivoting speakers and a flexible headband ensure a perfect fit for every user, while the stereo (dual-ear) design provides immersive audio that helps you stay focused.
Performance / Technology
The Blackwire 3325 is optimized for Unified Communications (UC). It features an intuitive inline remote that allows you to answer/end calls, adjust volume, and mute with a single touch. For IT managers, these headsets are fully manageable via Poly Lens, making it easy to deploy firmware updates and monitor device health across an entire organization.
Audio Quality
Dynamic EQ: Automatically optimizes audio for voice quality during calls and switches to high-fidelity stereo when you're listening to music or multimedia.
SoundGuard Technology: Protects your hearing against acoustic shock by limiting sounds above 118 dBA, ensuring long-term safety for heavy users.
Why This Product Stands Out
The Poly Blackwire 3325 (8X221AA) stands out due to its "future-proof" connectivity. While other headsets limit you to one port type, the 3325’s inclusion of USB-C, USB-A, and 3.5mm ensures you are never without a connection, regardless of the device. It is a premium, cost-effective solution for businesses transitioning to hybrid work models.
Specifications
| SKU | HS-POLY BLACKWIRE 3325 BW |
|---|---|
| Color | Black |
| Impedance | 32 ohm |
| Cable Length | 66.5 cm (inline module to headset); 90 cm (USB to inline module); 215 cm (total USB to headset) |
| Ear Cushions | Artificial leather (surface material) |
| Speaker Size | 32 mm |
| Compatibility | Compatible with PCs via USB Type-C® cable or USB Type-C®/A adapter and tablets via 3.5 mm audio port |
| Headphone Type | On-ear (stereo) |
| Boom Mic Length | 135 mm |
| Microphone Type | Noise cancelling |
| Source Category | computer-peripherals/headphone |
| Boom Mic Rotation | 280° |
| Speaker Bandwidth | 20 Hz to 20 kHz |
| Button User Controls | Call answer/end; Mute; Volume +/- |
| Microphone Bandwidth | 100 Hz to 10 kHz |
| Sensitivity (Speaker) | 3 dB RLR |
| Signal To Noise Ratio | > 24 dB |
| Dimensions (W × D × H) | 166 × 39.5 × 199 mm |
| Sensitivity (Microphone) | 11 dB SLR |
| Compatible Operating Systems | Windows 11; Windows 10; macOS; Android™; iOS |
| Nominal Sound Pressure Level | 94 dB SPL |
| Acoustic Protection Technology | SoundGuard Digital 1 2 |










