Okay, I'll show my ignorance on this one.
Why is this a thing? Sure, I could understand if we were talking about a piece of equipment that is 70, 80, 100 years old that has some components that might have physically deteriorated to the point of potential fire hazard (not just the magic blue smoke escaping, but a real call the fire department fire), or something of similar vintage/physical condition that might only have one last hurrah in it that someone might want to see alive that one last time just to say it did it before it dies the above mentioned ancient technology death, but a piece of equipment seven years old? I thought (maybe incorrectly?) that the general position on such matters is that technology and manufacturing of components has gotten such (particularly after the 1990s) that other than some audiophile "performance" degradation, electronics are built to more or less just keep on keeping on.
All that aside, absolute worst case, considering we're discussing Bryston amps here, aren't they still under warranty?
Thanks to those smarter than I who might give me a chance to learn another new thing today!