Original poster: "by way of Terry Fritz <teslalist@qwest.net>" <dhmccauley@spacecatlighting.com> I'm looking to buy some 833A Tubes if anyone has any available. New or used. I'm planning on building a high-side class B modulator for my dual 833A coil I have now for audio modulation. Please contact me at dhmccauley@spacecatlighting.com if you have any available. Thanks Dan