$166.00 (inc. of GST)

MDA500 QD Series of audio processors seamlessly integrate mixed-call environments for an improved customer experience, feature easy-to-use call controls and improves Customer Service Representatives (CSRs) training.

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Plantronics MDA526 QD is a smart audio processor for Plantronics 6-pin QD (Quick Disconnect) headsets. MDA526 QD lets call agents switch between call sources — desk phone and smartphone — with just the press of a button without needing to change headsets.

MDA526 QD connects to headset, desk phone, and computer using standard cables. After the audio processor is connected, the user can switch between audio sources. It has clear, intuitive buttons: volume, mute, and call control. This model of MDA526 QD connects to a computer via USB-A.


When mixed call environments are integrated seamlessly, CSRs switch easily between desk phone and softphone calls to serve more customers, whether from PC or Mac. Calls are clearer with echo and noise cancellation, Noise @ Work, Anti-Startle and G616 compliance that reduces strain on agents and allows customers to hear and be heard. The customer experience is further enhanced with advanced audio channel mixing that includes agent greeting, call recording, voice notes and streaming audio, all configurable in Plantronics Hub software.


CSRs can’t provide great customer service when they’re focused on making their equipment work. MDA500 QD Series smart audio processors make connecting to and switching between call sources easy with an electronic hook switch (EHS), available as an accessory, for desk phones, and answer, end and mute controls. The Plantronics Quick Disconnect (QD) interface allows CSRs to move from one system and quickly connect to another for a seamless workflow.


MDA500 QD Series smart audio processors support Plantronics Manager Pro*—subscription required—so managers can be alerted to potential issues. Once alerted, managers can take advantage of training opportunities for continuous improvements to call quality that enhance customer experiences.  Plantronics Manager Pro also enables IT to monitor, track and manage audio device deployment and system performance from the cloud. IT can easily push firmware upgrades, track headset usage and adoption, and identify potential conflicts and acoustic events to increase value and ROI from your headset investment.

What’s in it for you?

Desk phone compatibility All major desk phones
Softphone compatibility Built for UC applications and softphones from Microsoft, Cisco, Avaya and others
Headset compatibility EncorePro 500/700 Series 6 pin digital tops and EncorePro 500/700 4 pin standard tops
Audio performance Advanced noise and echo cancellation ensures a clear and natural sound. Please see your respective headset product page on for more details.
Hearing protection SoundGuard® DIGITAL protects against sound levels above 118dBA; G616 Anti-startle (during calls) detects and eliminates any large sudden increase in signal level; Time-Weighted Average prevents average daily noise exposure from exceeding 85 dBA (enabled by Plantronics Hub).
Dimensions H: 32.4mm x W: 82.8mm x D: 117.5mm
Weight .31 lbs/140 g
Call controls Call/answer end, mute, volume
Supported audio mixing Call recording (requires 3rd party PC application and Plantronics Hub), Agent greeting, Voice notes, Streaming audio
Worldwide limited warranty Global 2 year warranty
Applications supported Plantronics Hub desktop version is available for Windows/Mac, Plantronics Manager Pro suites: Asset Management & Adoption, Call Quality & Analytics, Health & Safety
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