Class A Integrated amps

That’s a really nice fisher amp if restored ie.recap etc. I believe its a class A/B amp though. If it was me I’d fully restore that Fisher and have some minor mods done like updated RCA’s and speaker binding posts. in the end its easily sold and you can recoup most of your money you invested into restoration. Fisher made some really good tube amps and this one is one of their best also highly desirable on the used market.

Marantz i don’t think makes anything that’s class A anymore, class A is getting rare in new production now. yes i know there’s some out there like pass labs, luxman, and a whole host of SET’s etc.

I’d try moving to better speakers first then decide if an amp is worth upgrading. i think the Klipsch speaker would be a good match too with the fisher.

Fisher 800C | Classic Receivers

If you are sure you are buying a Klipsch speaker then I would look

for a Luxman or Pass INT used with low miles. That will confirm for 

you that you were missing something. Even your Fischer will make the

new speakers sound good. 

Sugden A21SE is one to look at. The company has been around forever. Looks great and sounds great. Pure class A, 30 watts/channel.

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. 

Best integrated pairing I've heard with Forte III's is Leben CS300xs.  It's Class A/B.  Sounds way better than a Sugden A21SE pairing which I have also tried.