Tube DIY Asylum

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I have about 15-20 NOS NIB 27's in red Zeneth boxes...

Posted by Ivan303 on January 17, 2017 at 17:01:25:
Biased at 8-9 Volts and driven by an active tube pre-amp, would think it no problem as a driver for my 300B amp IF...

8-9 Volts is a good bias point for linearity and by the data sheet 10-11 Volts is close to ideal?

I have 2.5 VAC supply for running 2.5V filament 300B's so all I would have to do is switch out my octal driver socket and replace with a 5pin.