Tubes will make a big difference. All you have to do is swap in some NOS tubes from back in the 50's or 60's to more current production tubes and you will hear why these NOS tubes are superior. As one of the prominent vintage tube seller's said, "I would rather have a good amp with great tubes than a great amp with merely good tubes."
Anyone who tells you to use fuses, powercords, or conditioners in place of changing to superior tubes is giving you misinformation. Don't get me wrong, those things can give you some improvement too, but really good tubes speak for themselves. You should give it a try. IMO.
Anyone who tells you to use fuses, powercords, or conditioners in place of changing to superior tubes is giving you misinformation. Don't get me wrong, those things can give you some improvement too, but really good tubes speak for themselves. You should give it a try. IMO.