Everything from the 60's, 70's, 80's and 90's...
Remember in europe we have a lot more old stuff - especially old houses that are family owned for 100+ years tend not to have things replaced often unless they're unrepairable.
Even modern class D amps can be 30+ watts when not playing anything tho.
The much more standard class AB still uses 25% with no output, 100 W idle would be a stereo 200 W amplifier. Or a 5x 80 W surround amplifier.