[Amps] Paint it black

[john]

Since tubes derive a significant amount of cooling via radiation, the black 
separator seems to make sense.  Does it in fact allow the tubes to run 
cooler... who knows, but it probably can't hurt as long as it doesn't 
interrupt airflow.

Working this in the reverse, I replaced a transformer in a 32V2, where the 
rectifier as I recall is directly adjacent the (black) power transformer. 
The transformer got very warm during operation. I put a thin Al sheet in 
between the transformer and the tube and the transformer was notably 
cooler  (Tubes being cheaper than transformers to replace).

Merry Christmas All
John