>From the site below... I'm not sure I like the idea of grounding only one grid pin per tube. See the W8JI site for why not to do this. 73 Jim W7RY > I assume that you've seen the excellent TL-922 engineering information, > here: > > http://pa0fri.home.xs4all.nl/Lineairs/TL922/tl-922eng.htm > >