I finally appreciate an answer.
To me, it's a consumer electronics version of the MCAS software debacle in the 737MAX-8. As shipped from the factory, we have a system that takes over, can't be shut-off easily and prevents the product behaving like the tens of thousands of amplifiers tested before it, and worse still, not meeting its own advertised specifications which require 5 minutes at advertised power, not a mere and non-specific 'several seconds' before it crashes and shuts down.
Unless the user can easily defeat the time/frequency integrator part of the protection, you should either amend the specifications to reflect the true continuous ratings in accordance with the FTC's Amplifier Rule or remove the reference to continuous average power and call it 'several seconds' power.
Consider since 1974, manufacturers have played by those rules. Their amplifiers were big, hot, had tons of heatsink area, tons of dissipation in silicon, massive power supplies and little or no current limiting apart from short circuit protection, DC and sometimes over-voltage. Those amplifiers met or exceeded their ambitious specifications, year after year. They were built to do it. In short, consumers were getting what they paid for.
Here is the relevant part of the FTC's Amplifier Rule:
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The rule was retained after industry consultation:
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This Benchmark power amplifier is no doubt a lovely product, built well and performs admirably in all areas except meeting its continuous power output ratings. Rather important wouldn't you say?