The only way you will change the sound of your amp in rebuilding is by improving it. Especially an amp as old as yours. Components have come a long way since 40 years ago. The only limiting factor is the competence of the one doing the work. This amp is by no means "perfect" sounding at this age. Therefore you have no reference point anyway. I would recommend Roy A. Esposito of Sounds like New. He is one of the engineers who designed and built the Acoustat TNT 200. He's currently rebuilding a second 200 for me with a mono switch as with the first. The sound of the one I have is state of the art. It would probably run about 4-600.00
Accuphase P-300, worth upgrading?
I recently acquired an Accuphase P-300 power amp and my question is about rebuilding it. I haven't really listened to it yet, other than hooking it up to see if it worked and it seems fine. The amp is in mint condition but it is close to 40 years old so I am sure it needs serviced and I would like to upgrade it to sound as good as it can, if that is practical. If I were to refurbish this amp just how good can it be? What price range in a current amp would it compare to? I have $600 in the amp. Who would you send it to to bring it up to speed? Any thoughts or suggestions are very much appreciated.