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?
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.
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