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The new FTC amplifier testing standard requires testing at 77°F, 8 ohms, all channels driven, between 20-20,000 Hz, with no more than 1% THD plus noise, not just distortion and intermodulation noise

definitionpending

Speaker

Primary Speaker (Service Facility Owner/Audio Expert)

Evidence Quote

“they have set testing conditions at 77 degrees across the board...they have to be at 8 ohms...operating on all channels driven between 20 and 20,000 khz...with 1% THD plus noise”

Source

What does Sound Approach think about the new Amplifier Rule from the FTC?— Sound Approach
Created: 8/13/2026, 4:50:14 AM

My Notes

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