WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
Sure. Class A, maybe a little on the high side, say 350V which would be biased at what, 40mA per? You'll want screen around 200-250V. Grid will be something like -13V bias, or cathode at +13 (160 ohm auto-bias resistor for the pair).