Poly DA75 USB-to-Headset QD Audio Processor (4 pin) (USB-A and USB-C)
Poly DA75 USB-to-Headset QD Audio Processor (4 pin) (USB-A and USB-C)



Poly DA75 USB-to-Headset QD Audio Processor (4 pin) (USB-A and USB-C)
Poly (Plantronics) DA75 USB-A/USB-C Digital Adapter
SKU: 786C6AA
About this item
· Dual USB Connectivity: Built-in USB-A and USB-C connectors for maximum compatibility.
· QD Headset Support: Works seamlessly with all Poly Quick Disconnect (QD) headsets.
· Intelligent Headset Recognition: Automatically optimizes audio performance based on the connected headset.
· Professional Audio Quality: Provides clear, wideband audio optimized for UC and softphone calls.
· SoundGuard® Digital Protection: Safeguards hearing against sudden loud spikes and acoustic shocks.
· Remote Firmware Updates: Keep devices up to date via Poly Lens cloud/software.
· No Inline Controls: Designed as a streamlined adapter (control-free model).
· Lightweight & Portable: Compact design with improved cable durability.
Product Description
The Poly DA75 Digital Adapter (SKU: 786C6AA) is a professional USB solution for connecting Poly QD headsets to computers and modern devices. Offering dual USB-A and USB-C connectivity, it ensures compatibility with both older and newer systems.
Engineered with intelligent headset recognition, the DA75 automatically fine-tunes audio settings to deliver professional-grade clarity for softphone and UC applications. Its SoundGuard® Digital acoustic protection ensures safe listening, while remote firmware updates via Poly Lens make it future-proof.
Unlike the DA85, the DA75 is designed without inline call controls, making it a streamlined and cost-effective option for enterprises and call centers that require robust audio without additional hardware buttons.
Product Information
Feature |
Details |
Model Name |
Poly DA75 USB-A/USB-C Adapter |
SKU |
786C6AA |
Connectivity |
USB-A & USB-C connectors |
Headset Compatibility |
Works with all Poly Quick Disconnect (QD) headsets |
Controls |
None (no inline controls) |
Audio Protection |
SoundGuard® Digital (anti-startle, acoustic shock protection) |
Audio Performance |
Wideband PC audio, optimized for UC & softphones |
Firmware Updates |
Yes, via Poly Lens (remote updates supported) |
Weight |
Lightweight, portable |
Durability |
Enhanced cable design for daily enterprise use |
Warranty |
2 years |
Ideal For |
Call centers, office professionals, UC users |
Use Cases |
Connecting Poly QD headsets to PCs, laptops, and other USB-A/C devices |
Is Discontinued |
No |
Country of Origin |
China |