Schematic and instructions on a neat little 6AQ5 final rig you could build.
Be careful. Remember, the cathode of this tube is at 300 volts or more. Note on diode string: Start with 35 diodes.Use a three position toggle switch for S1. The High setting shorts out about 1/3 of the diodes in the string. Thi setting yields about 5 watts output with 100% positive peak modulation capability. The Lo position shorts out about 2/3's of the diodes. This setting yields about 2 watts output with 200 % positive peak modulation capability.
http://www.amwindow.org/tech/htm/series.htm
