OK guys, I know. There are hundreds of posts explaining the concept of headroom, and I've read through dozens of pages and only got more confused. So I'm borrowing a format from Reddit Explain Like I'm Actually 5. (Yes, there is the more well known ELI5 [explain like I'm five], but, since people were explaining things with too much jargon, they created a new sub with the addition of the word "Actually"!) One thing that confused me more than the rest, with the limited understanding I gleaned, was the concept of "peak." I mean, we are talking about machines here, right? A car can either go 110 MPH or it can't, why would a car be able to go 110 for short spurts only? Unless they are limited due to overheating concerns? What are the concerns of pushing the power of an amp if that were the case? Overheating? Ruptured Speakers? If the former, why not just install an extra fan, and get rid if the "Peak" rating. TIA for your indulgence!