Tube amp heat

[Happy Face]

This is a probably a pretty dumb question, and I've asked you guys a few already! But since I am among friends, here's another.

Last night we played a show at a local venue we like. I wanted to use my Orange AD 200 rather than my Terror.  But the stage is a little cramped and I was in a hurry so I figured I'd only bring one 1x15" cab rather than two.

At the end of the night, I noticed the amp felt hotter than usual. When I run two cabs, I've often marveled how cool the head is at the end of the night. I mean, way cooler than the tube amps I used when I was young and handsome.

Is there any chance that running a single 8 ohm load was heating things up versus running the normal 4 ohm load with two cabs?  (I had the single cab on an 8 ohm tap so it wasn't a mismatch issue.)

I'm wondering if something is amiss in the amp. Or was I just driving the head too hard on a hot night?  The volume was pretty low since we have a big PA but I did have the gain up and was digging in pretty good.

Thanks.

The Paranoid  Parent

[Psycho Bass Guy]

Heat is current, and I'll bet by trying to make up the difference in volume you lost to having only one cab with the amp, you just pushed it harder.

[Happy Face]

Thanks. That makes sense.

[Highlander]

Great for toast...

[the mojo hobo]

Also good for those winter days when the stage is close to the door.