I have NOS 5Y3s that output 50 volts lower right out of the box compared to a new manufacture 5Y3 or a SS rectifier.     I put a 1/2 power attenuator in all my 2Stroke inspired builds these days and it works well, allowing you to dime the amp (for tone) and have an output of around 2 watts.  It’s still loud though  🙂