Poly Blackwire 3300 Series
Poly Blackwire 3300 Series - Image 2
Poly Blackwire 3300 Series - Image 3

Poly Blackwire 3300 Series

  • Plug-and-play USB (USB-C or USB-A) with optional 3.5 mm connectivity for supported models (3315 / 3325)

  • Flexible noise-canceling microphone boom, 280° rotation, 135 mm length

  • Dynamic EQ optimizes voice for calls (up to ~6.8 kHz) and supports multimedia (20 Hz – 20 kHz) in stereo models

  • Inline controls for call answer/end, mute, and volume; optional Microsoft Teams versions include a Teams button

The Poly Blackwire 3300 Series is a line of corded USB headsets built for business / unified communications use. These are plug-and-play, reliable, and designed for all-day comfort with professional audio quality, flexible microphone boom, and wide compatibility.

They come in monaural (one ear) or stereo / hi-fi (dual ear) versions, and some models include a 3.5 mm jack for mobile/tablet connectivity (in addition to USB).

They support Dynamic EQ, SoundGuard (audio protection), and easy controls (answer/end, mute, volume) built into the cable.

Specification

Feature Typical / Range Notes
Connectivity / Interface USB-C (24-pin) (with tethered USB-A adapter)  Some models (3315, 3325) also include 3.5 mm jack 
Microphone Flexible boom, 280° rotation  135 mm typical boom length 
Mic Frequency Response 100 Hz – 10,000 Hz  Optimized for PC wideband audio (~6.8 kHz) 
Microphone Sensitivity –38 dBV/Pa ± 4 dB   
Speaker / Audio Mono or Stereo (for hi-fi models)  32 mm drivers, 32 Ω impedance 
Speaker / Frequency Response For hi-fi stereo models: 20 Hz – 20 kHz  For voice mode: optimized ~200 Hz – ~6.8 kHz 
Speaker Sensitivity ~94 dB SPL ±4 dB   
Weight Mono version: ~102 g (with inline control)  Stereo version: ~130 g (with inline control) 
Controls / Buttons Inline – call answer/end, mute, volume up/down  Microsoft Teams variant has a dedicated Teams button too 
Audio Protection / Features SoundGuard (limits > 118 dBA)  Dynamic EQ, anti-startle, TWA as per Blackwire family guide 
Software / Compatibility Windows, macOS – Poly Lens / Plantronics Hub support  Some softphones require software for full call control 
Warranty 2-year limited warranty   

Additional Resources

Data-Sheet :

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