After an hour in idle, the top of the 2-channel Chassis is ~86ºF, and the 3-ch is ~96º.
Underside of the Chassis reads ~90 and 102º respectively, right at the center-mass point for each Amp module... those are clearly the main heat sources.
It will be interesting to check these after running some signal through them in a few days.
I had received a warning from another user of the 2- and 3- channel Chassis that heat can be an issue so along with the Adapters, I also have two AC Infinity S2 fans coming.
Your source to create smart growing systems with components including advance grow tents, inline fans, clip-on fans, LED grow lights, and UIS™ controllers.
I've always been curious how these fans perform, and for the cost it seems a worthwhile time to check them out.