[TrickyRicky]

But isn’t headroom already accounted for between RMS power and peak (Max) power?

A respectable Helix Class D will provide 100w RMS, and 130w Max per channel.

RMS is the same as PEAK power. They are just different measurement units, sort of like 1L is RMS and 33.814oz is PEAK. They are basically the same thing but manufactures rather use the 33.814 unit number because it’s BIGGER and that’s what bass heads want. Peak is just twice the RMS.

If the amp is capable of doing 100watts RMS then can do 130watts dynamically, there is really no audible difference, 1.1db of headroom is inaudible to many.

 

[TrickyRicky]

When I read this, I see "Peak=RMS" and "Peak = RMSx2" in the same paragraph. What am I missing?

Did you not notice I mention how they are DIFFERENT measuring units. SAME waveform different measurements units. So yes same thing as it’s the SAME waveform, just like measuring the same liter bottle‘s capacity…you can do it in liters or ounces. Sorry if I confused you. Peak = RMS x 2 everyone knows this already.

 

[TrickyRicky]

Only for a sinusoidal signal...

Why would you want to have DC signal on the output of an amplifier? Of course only for sinusoidal signals, isn’t that was AC is.