The large Balboa II room at T.H.E. Show in SoCal demo'd a system designed around a pair of Clarisys Audio Studio Plus speakers ($69,000/pair) driven by two pairs of WestminsterLab Rei monoblock class-A amplifiers ($37,900/pair) run in bridged mode, ahead of which was a WestminsterLab Quest balanced preamplifier ($27,900).

Back when gasoline had lead in it and amplifiers came with circuit diagrams in the back of the manual, there was an unspoken understanding that power meant weight. A professional camera was a Graflex Speed Graphic or a Hasselblad 1000F, built like a small battleship and nearly as heavy. Powerful car engines were cast-iron V8s with cylinders you could stick a fist in. And of course, serious amps had transformers that could double as boat anchors.

These days, amplifier design often emphasizes efficiency. Class-D amps in particular have come a long way. Many are terrific, and they're undeniably practical. But there's still something uniquely satisfying about a design that prioritizes timeless expression over economy of electricity or space.

The Pathos InPoL Legacy, a class-A design, is unapologetically massive and so gloriously overbuilt that moving it requires a tactical plan and a chiropractor.