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RE: Take on VT-25 / 801 / VT-62 / 10 Tubes?

Posted by euro21 on January 11, 2017 at 08:23:03:
Thoriated tungsten filament tubes (10 family):
210/10/10Y/VT-25 (1602 is selected VT-25);
801/801a/VT-62 mas more power capability (1608 is the robust uncle of 801a, but not as linear as little brother, only use for B class power amp);

VT25A has oxide coated filament, larger anode than VT-25.

For preamp - 10...25mA - each of them (except 1608) are excellent tubes.

Globe 210 is the oldest (rare and the most expensive).
10 and original 801 has lower voltage tolerance, thus lower power capable tubes, 10Y and 801a are the improved versions.

I use/used all of them (except 210 and 1602).
I prefer thoriated tungsten tubes, old type 10 and graphite anode 801 as preamp, 10Y as driver and 801a as power tube.