Would This Amp Be Worth The Cost?

 I would consider changing pre amp first...

Interesting.  I have some lamp cords I have been selling.  OP, I am glad you are happy with your system.

When the source material is the same and the speakers are the same and the room is the same, it seems differences in what kit lies between them have a negligible effect when the listening is blind. Examples abound:

http://matrixhifi.com/contenedor_ppec_eng.htm

It’s no use saying “but I can tell”. All these guys thought that too.

You should thank these dedicated audiophile colleagues because they are saving you from spending money on what doesn’t matter (cables, amps, racks, crystals, etc) so you can spend it instead on what does matter (source material, speakers, and your room). 

You should thank these dedicated audiophile colleagues because they are saving you from spending money on what doesn’t matter (cables, amps, racks, crystals, etc) so you can spend it instead on what does matter (source material, speakers, and your room).

He should thank you for providing a very good example of what NOT to do. Ignoring quality amplification, cables, source components etc. is a sure fire way to end up with a mediocre system. If that is his goal I implore him to follow your advice.

You post your blind listening test result that show that anything other than source material, speakers and room make any audible difference.  I’ll keep posting examples of where people who were utterly convinced they could tell differences in amps, cables, racks, etc find out that they just can’t.