not a bad question at all, I think.
Seems with one amp I have which I think fits the bill to a degree, lack of internal wiring i.e. very short distance between things, only 1 board with input/output and power jacks mounted directly on board, point to point soldering, a real mother of a transformer and output caps, minimal protection circuits, no fuses.
The opposite you talk about, lack of detailed resolved etc. harsh sound, I have heard from units with lots of boards/devises/controls/wire/ inside.
Seems with one amp I have which I think fits the bill to a degree, lack of internal wiring i.e. very short distance between things, only 1 board with input/output and power jacks mounted directly on board, point to point soldering, a real mother of a transformer and output caps, minimal protection circuits, no fuses.
The opposite you talk about, lack of detailed resolved etc. harsh sound, I have heard from units with lots of boards/devises/controls/wire/ inside.