I have been having bass issues with my MK III, and in my experimenting I noticed the right channel transformers were getting warmer than the left.  I had just put in some new output tubes and Steve said it was due to the tubes pulling more power on the right channel so for now I will attribute it to a tube issue until I can sort out my bass issue.  However, they were just warmer, not too hot to touch.

Have you checked your actual house voltage?
How does it compare to the transformer rated voltage?

I had my Torii on for about 6 hours yesterday, still fussing with my bass issue, and all the transformers were barely warm, both power and output.

Hi McKajVah and all on this topic.

I run two Torii Mk III stereo amps in "vertical", active bi-amp configuration into my Analysis Audio "Epsilon" full ribbon ls. via a Marchand active crossover.

Each loudspeaker is fed by its own Torii III stereo amp: The left channel of the stereo amp drives the bass ribbon, the right channel the treble ribbon.

The amps were reworked and calibrated for this active application by a specialised workshop in Germany, to ensure an electro-technical/electro-acoustical "equality" of the two amps.

The four power transformers, two on each amp, get equally very hot; like in your case, uncomfortably to touch.

Since the Torii Mk III run in class A1, the power transformers suck the full 180 W from your wall socket, regardless how loud the volume is set.

Why the "hotness" of the power transfomrers on the Torii Mk III occurs, is bejond my technical knowledge. I would myself like to know why this is so.

I would very much appreciate if someone could give us a proficient technical explanation for this phenomena on this amplifier.