Touring the strange. Whilst we still have the lid off, here's some more gawking at incomprehensible Aztec Zotl tech.

Four sizable sideways-mounted capacitors live beneath these heat sinks.

If you were still hoping for hunking transformers and their attendant weight, there's just this lone compact toroid. Forget about impressing your bathroom scale, too. This is a flyweight.

Here's the all-singing all-dancing octet of preamp, driver and output tubes…

..followed by the two regulators…

… and a final view at relay alley where your volume is set.

Case closed. Feeling none the wiser is normal. Even experienced tube designers can't wrap their head around the Zotl circuit. Just nobody can deny that it works.