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 DA75 USB-to-Headset QD Audio Processor (USB-A & USB-C, 4-Pin)
SKU / Model Number: DA75
About this item
· Dual USB Connectivity: Built-in USB-A and USB-C connectors on the same cable for maximum compatibility.
· QD Headset Support: Works with all Poly Quick Disconnect (QD) headsets with full backwards compatibility.
· Intelligent Headset Recognition: Automatically optimizes settings for connected headsets.
· Enhanced Durability: Designed for long-term professional use in busy call center and office environments.
· Hearing Protection: SoundGuard Digital technology protects users against acoustic spikes and long-term exposure.
· Lightweight Design: Compact (30g / 0.06lb) with a 51.2 in cable for comfortable desk use.
Product Description
The Poly DA75 USB Audio Processor is a professional-grade adapter that connects Poly QD headsets to USB-A or USB-C devices. With dual USB connectors on a single cable, it ensures future-ready compatibility across modern and legacy setups. Featuring intelligent headset recognition, upgraded durability, and Poly’s SoundGuard Digital hearing protection, the DA75 is ideal for call centers, hybrid offices, and enterprise deployments. Whether using USB-A or USB-C laptops, this audio processor delivers consistent, high-quality voice performance.
Product Information
Feature |
Details |
Brand |
Poly (HP) |
Model / SKU |
DA75 |
Product Type |
USB-to-QD Headset Audio Processor |
USB Connectivity |
USB-A and USB-C (dual connector, same cable) |
Headset Compatibility |
All Poly QD headsets (4-pin), full backwards compatibility |
Audio Features |
SoundGuard Digital (acoustic protection), intelligent recognition |
Cable Length |
51.2 in (1.3 m approx.) |
Weight |
30 g (0.06 lb) |
Durability |
Reinforced build for professional environments |
Ideal Use |
Call centers, enterprise, hybrid work, customer support |