Why so many tubes?


Many of the most expensive tube amps/preamp have multiple tubes...6, 8, 10. If direct path is preferred in the speaker by most, why the acceptance of a glass army in one's amp/preamp? 
jpwarren58
Was this a troll thread?

Who cares the platform as long as it produces high quality reproduction of music?
You need to use a lot of power tubes if you want crank up the output without putting a really heavy burden on each tube.  So that's why you see the 100w tube amps often use an octet for example.  Not my cup at all as I prefer lower output triode amp paired with high efficiency/easy load to drive speakers.  But the technical explanation is simple...to the point this does feel like a trolling thread. 
There are always different ways to approach a task.

If you want simplicity in the signal path, start with high efficiency speakers, dht single end triode integrate amp and a source.

more watts require more tubes.