Isn't the Fisher receiver tubed based? Klipsch speakers sound great with tube amplification. Another option if not wanting tube amp would be the Pathos Classic One MKIII. It is a tube/SS hybrid.
If sticking to a class A SS design then the Sugden would be a good candidate. Also the Pass Int 25, though at higher cost. Luxman made a model 550 which would also fit, however no longer in production. The Pass or Luxman may be found used.