Johnson made a Viking Thunderbolt 6N2 amplifier with a pair of 4CX250's. It
had 2100VDC plate xformer and had regulated screens and bias. The power
supply was good to run 1kw DC input. Great sounding amplifier when it was
not over driven
"Jay in the Mojave" wrote in message
...
Hello All:

What type tube or tubes does this Johnson Amp use? its a JOHNSON VIKING
6N2 THUNDERBOLT AMPLIFIER. Looks like 811's or 572B's?!?!?!??!

Don't think I have seen one of these before!

http://cgi.ebay.com/ws/eBayISAPI.dll...9185 845&rd=1

Jay in the Mojave