boardjunkie writes:
I can't find it now, but some time back I saw a video somewhere on the
net of some guy that built a ~300w SE xmitter triode audio amp. The
tube was out in the open with a plexiglass shield around the front
while he stood in front of it playing a guitar through it. I got a
chuckle out of that.

There's a group making SE triode amps out of 833As ... could be the
same one ... http://www.wavac-audio.jp/he833v13_e.html