Latest Software Release: APx500 v10.0
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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Locations Worldwide
Multiple Dates
AES Automotive Audio International Conference
Detroit, Michigan
July 29-31, 2026
Automotive Testing Expo
Shanghai, China
August 26–28, 2026
International Test & Measurement Defense Seminar
Ingolstadt, Germany
October 8, 2026
Featured Blog Posts
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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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16-Channel ASIO for APx500 Flex, APx516B, & APx517B
Discover how Audio Precision now provides up to 16 simultaneous ASIO channels, giving you expanded interface capability without added cost.
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APx on the Manufacturing Line
Learn more about how the APx517B audio analyzer is a game changer when it comes to the production line testing of acoustic devices.
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Measurements are Estimates
Get a better understanding of how audio analyzers’ measurements are not absolute truths but are more so estimates.
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Explore More Resources
Audio Measurement Handbook
This reference guide covers basic tools and techniques, includes a glossary of terms, and more.
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Smart Speaker Measurements
Get an overview of smart speaker acoustic measurements with a focus on frequency response.
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Testing Power Amplifiers
This application note covers the fundamental measurements for testing power amplifiers.
Headphone Measurements
This paper discusses challenges, headphone types, measurement standards, acoustics, and more.
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Automotive Audio Testing — Amplifiers
This paper focus on automotive audio amplifiers and the tests normally made on these devices.
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Loudspeaker Measurements
Get a overview of electroacoustic measurements used to characterize loudspeaker performance.
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