Banggood "Tube Amp 2" Kit

[ppppenguin]

I don't think it's a 6J5. That's an older octal base device: http://www.r-type.org/exhib/aaa0019.htm
6J6 (= ECC91) seems plausible. http://www.r-type.org/exhib/aaa0605.htm This has 450mA heater

You can edit posts for a certain period (20 minutes?) after posting. I'm sure one of the mods will give more details.