On Wednesday, 25 September 2019 13:46:11 UTC+1, wrote:

As already noted, many things *can* get hot. What is in question is how heat will affect various components. In no particular order:

a) Carbon comp/film resistors will change value over time, and much more-so of heated. Some types are so awful that they will change in value simply from the heat required to install them. Given the alternatives, the only reason to use them today would be based on audiophoolery.

We use carbon film aplenty. The reasons are low cost & good availability.
Carbon comp is used on occasion for its pulse power tolerance.


NT