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The UL HD Audio Quality Verification Mark provides both audio device manufacturers and their customers with an independent quality mark that they can trust. It confirms and validates that customers are getting the quality they expect, by establishing an empirical, industrywide
standard. UL verifies claims of subsonic and ultrasonic (HD audio) performance by authentication of digital audio files for sample rate and bit depth performance, and evaluates audio devices based on quality of playback and performance.

Provides a brief overview of UL’s services across industries and markets.