Heathkit GR64 shortwave radio

[Electronic M]

Originally Posted by dieseljeep

I was talking to a man that used to buy and sell war surplus electronics. When I inquired about the 12A6, he replied that they were sold for something like ten cents each, in quantity.
The 211's were sold for less than $1.00 each.

Is it really bad to operate my amps with the 12A6 tubes? I've put a lot of hours on those mono blocks and aside from some caps and a resistor they have been quite reliable....Not like I have or can afford getting two new pairs of output tubes for the next couple of months anyway....

What are 211's BTW?