Has anyone attempted to do some tweaks to their amps

[ogs]

What i have learned over the years is that every piece of equipment, regardsless how good and expensive it is, can be much improved with better parts. Has anyone attempted to do any tweaks to their amps? To be honest when looking at pictures of the inside of the amp I'd hesitate to touch anything but maybe small tweaks like better fuses, if there are any inside or changing the stock binding posts with purer sounding nexgen ones.

Looking forward to your comments and suggestions!

I have been tempted to bypass the speaker terminals and connect directly to the cable shoe on the riser board. I am still contemplating how to do this in a good, safe and easily revertible way. And of course the fuses or perhaps change the IEC inlet completely. I think Manoet has a description of this.