PSU & Cover...

[kenreau]

PMFJI but that is very hot for 8.1.3 using power management.
The principle route for evacuating heat from the circuitry of a Devialet is via thermally conductive pads to the baseplate. If you have removed the baseplate of your amp for any reason and not carefully bedded the thermal pad back onto the baseplate when refitting that would be the most likely explanation for this problem IME.
It is pointless cooling the top, since it is not in thermal contact with anything of consequence.

I get 36/34/39 on 8.1.3 on my 800 listening loud.

Thanks for the feedback f1eng.  I didn't move, or remove, any heat pads, but sounds like I may be should open it up and slightly reform them so they make firm contact and compress as I close and screw the chassis back together.  After installing the 8.1.3 I was expecting things to cool down, but now wonder if reducing the power output to 80 watts is causing it to heat up more.  I may start with that, adjusting the power up to say 150 watts and see what it does to the temps.

Thx
Kenreau