Wondering what the consensus is on this...if there can be one: my main system is a Rega Cursa 3 preamp and Rega Exon 3 monoblock amps. These would have been manufactured in roughly 2003, so they are pushing 20 years old. I bought them used, in 2010 or thereabouts. I know that capacitors have a lifespan. I leave my gear on almost all...the...time. I like it warmed up and ready to go. Is there a point at which I should have my gear serviced? What do you do? Service on time, or wait for something to go wrong? I haven't noticed anything egregiously wrong - I do get a pop from time to time when turning my turntable power supply on and off that seems new, but that could presumably be a mains issue as well...that said, I recognize that I am not likely to have noticed small changes over time, either. Is it worth me trying to find a Rega service center to have my gear gone over?