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The FTC published the first Amplifier Rule in 1974, but it did not specify the testing methodology that manufacturers must use, allowing manufacturers to manipulate measurements

factualpending

Speaker

Primary Speaker (Service Facility Owner/Audio Expert)

Evidence Quote

“in the 70s manufacturers began to skew them numbers...the FTC published The Amplifier rule but what it didn't do was go far enough to say what the testing methodology had to be”

Source

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

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