老化問題？不用擔心，全部都是終生壽命的元件，除了4個電容約在25~30年，真空管10年換一對就好，原廠可免費提供一對。
Aging problems
As already explained above, the DAC should age very very slowly.
The digital PCB should last a lifetime. The transformer, the paper in oil caps, thecables, plugs, sockets – should last a lifetime. There are only 4 electrolyte caps which I selected from premium brands and they should last circa 25-30 years. Other than thatr I suggest to change tubes every 10 years and I provide a spare pair for free.
So short of a thunderstrike or beer spill – I expect no failures or aging problems before 20 years. I will be retired by then anyway.