[Amps] Alpha 76A 3 holer.... happy with just 2 tubes?

[Patrick Barthelow]

Friends,
Have an Alpha  76A for sale, with 3 tube PA, and legitimate questions of concern are voiced,  for the very expensive finals, no longer made, by prospective buyers.
If one of the three finals fail, is it a simple matter to just run the remaining two and an empty socket, at slightly reduced output?   Any I/O circuits need to be 
changed/optimized for two tube operations?

Best Regards,   
Pat Barthelow  AA6EG