Plantronics DA70 USB Audio Processor | Crystal-Clear PC Audio
The Plantronics DA70 transforms your computer audio experience with enterprise-grade digital signal processing built into a compact USB adapter. We designed this audio processor to eliminate the inconsistent sound quality that comes from built-in PC sound cards, delivering crystal-clear voice communication for every call.
Whether you’re handling customer support calls, joining virtual meetings, or managing a contact center workstation, the DA70 provides professional audio performance without complex installation. Simply connect your corded headset to the processor and plug the USB cable into your computer — no drivers, no software, no hassle.
Our engineering team built advanced acoustic features directly into the hardware, including active equalization that automatically adjusts to optimize speech clarity. The result is natural-sounding conversations where every word comes through clearly, even in noisy office environments.
Technical specifications & connectivity
Audio Processing Technology & Performance
The DA70 houses digital signal processing hardware that actively filters background noise and balances audio levels in real time. Our proprietary acoustic engine applies adaptive equalization to voice frequencies, ensuring speech remains intelligible even when ambient noise levels fluctuate throughout your workday.
Unlike passive inline amplifiers, the DA70 processes audio digitally before it reaches your ears. This approach eliminates the static, hum, and interference common with analog PC audio outputs. The processor samples audio at 16-bit resolution, preserving the full dynamic range of human speech while filtering out frequencies where office noise typically concentrates.
Connectivity & System Compatibility
We built the Plantronics DA70 around universal USB 2.0 standards, ensuring compatibility with virtually any computer manufactured in the past fifteen years. The processor draws power directly from your USB port, eliminating the need for external adapters or batteries.
Two 3.5mm jacks provide separate connections for your headset’s microphone and speaker cables. This dual-jack design works with traditional PC headsets that use split audio cables, as well as mobile headsets when paired with appropriate adapters. The standard connector sizing means you’re not locked into proprietary accessories — any quality corded headset with 3.5mm plugs will work.
Physical Design & Desktop Integration
At just under four inches long, the DA70 audio processor fits comfortably on any desk without monopolizing workspace. We molded the housing from durable ABS plastic with a matte finish that resists fingerprints and scratches through years of daily handling.
The integrated USB cable extends approximately three feet, providing enough length to route from your computer to a convenient desktop position while avoiding excessive slack that creates cable clutter. An attached cable clip helps secure the processor to your desk edge or monitor base, preventing it from sliding around when you adjust volume or toggle mute.
Professional Audio Solutions for Every Workspace
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Common Questions About the DA70 Audio Processor
No software or drivers are required. The DA70 uses standard USB audio class protocols that are built into Windows, macOS, and Linux operating systems. Simply plug the processor into your computer’s USB port and it will be recognized automatically as an audio device within seconds. Your system will handle all necessary configuration in the background without any action on your part.
Yes, the DA70 works with any corded headset that uses standard 3.5mm connectors for microphone and speaker cables. While it’s optimized for Plantronics headsets, the universal jack sizing means you can use quality headsets from any manufacturer. The only requirement is that your headset uses separate plugs for mic and audio rather than a single combined connector.
Absolutely. The DA70 functions as a standard USB audio device that any communications software can use. In your softphone or video conferencing app’s audio settings, simply select the Plantronics DA70 as your microphone and speaker device. The processor works seamlessly with Zoom, Teams, Skype, Webex, and virtually any other application that supports computer audio.
The DA70 bypasses your computer’s internal sound card entirely, processing audio through dedicated digital signal processing hardware. This eliminates common issues like electromagnetic interference from other PC components, poor-quality digital-to-analog converters, and outdated or buggy motherboard audio drivers. The processor applies active noise filtering and equalization specifically tuned for voice frequencies, resulting in clearer speech and reduced background noise compared to typical onboard audio.
The DA80 is an enhanced version with Microsoft Teams certification and dedicated inline controls for answering, ending, and muting calls within Teams specifically. It also features a busylight indicator that integrates with Teams presence status. The DA70 provides the same core audio processing quality but with simpler inline controls — volume wheel and mute button only. Choose the DA70 for general-purpose professional audio at a lower price point, or the DA80 if you work primarily in the Microsoft Teams environment and want certified integration.
The DA70 applies automatic equalization optimized for speech clarity rather than offering manual tone controls. Our audio engineering team tuned the frequency response specifically for voice communication, emphasizing the ranges where human speech occurs while reducing frequencies where background noise typically concentrates. This approach delivers consistently excellent call quality without requiring users to adjust settings or understand audio engineering principles.
Yes, the DA70 works with both USB 2.0 and USB 3.0 ports. The processor is designed to USB 2.0 specifications, which means it functions perfectly in newer USB 3.0 or 3.1 ports through backward compatibility. You can plug it into any standard USB Type-A port on your computer, laptop, or powered USB hub regardless of the specific USB generation that port supports.