Chuck,
The grid question is a good one and there is NO schematic of the conversion. It is written on the "manual" page in big script that there is no schematic. That is part of the reason I am puzzled about this amp. The "manual" claims between 10 and 12 dB gain in this configuration. As everyone probably figured out, I am not much of a technician and am trying to figure out what is going on with this unusual amplifier so that I don't kill it. I could pull it out of the cabinet and see if the grids are still grounded. I may do that just to try and get some more info to work with.
73
Warren / NI5L
