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This version adds support for Windows Audio Session API (WASAPI). Windows Audio Session API (WASAPI) I/O capability allows for the testing of Windows Audio devices. It also enables a Windows Audio device to serve as an output for the APx generator, an input for the APx analyzer, or as both input and output to make measurements independent of the APx hardware. Get the full details on what's new in v10.0 here.

Benefits of the APx500 Software

• Built-in measurements
• Intuitive user interface
• Powerful automation features
• API integrations
• Subscription & perpetual license

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Programmable Serial (PSIO) I/O Module
Learn how the PSIO module provides a highly configurable interface for chip-level digital audio interfaces

Introduction to the Bluetooth 5 Module
Watch how the APx Bluetooth 5 interface module measures audio performance for Bluetooth 5 LE–compatible devices.

Testing Headphones to EN 50332
View a demo on testing headphones to the EN 50332 standard using an APx analyzer and APx500 software.

Introduction to APx500 Flex
Get an introduction to APx500 Flex and using the APx500 software with third-party audio interfaces.

APx500 Workshop
Frankfurt, Germany
May 22, 2026

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Webinar: Testing USB Headsets with APx500
Virtual Event
June 10, 2026

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Automotive Testing Expo
Booth# 1640
Stuttgart, Germany
June 23-24, 2026

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AES Automotive Audio International Conference
Detroit, Michigan
July 29-31, 2026

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In Defense of THD+N

Explore how THD+N is a transparent, reproducible way to quantify audio performance and why, despite its limitations, it remains more actionable and trustworthy than black-box “quality scores.”

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How Bluetooth® LE Audio Is Reshaping Wireless Audio

Learn how Bluetooth LE Audio enables scalable, high-quality wireless audio across everything from earbuds to hearing aids to public broadcast systems.

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System One Handoff: A Milestone Moment

To celebrate 40 years since the first System One analyzer shipped, we went looking for the oldest, continuously in-use unit—see how Solid State Logic took top honors in our search.

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