Some items certainly seem to have a finite life, particularly CD players, which as someone has already said, will always have laser failure after some years. Usually the laser is no longer made. That is something to consider if you are looking at a $10000+ CD player, without a laser , it is junk.
Secondly, I have had problems with valves, not tube failure, you expect that, but thermal damage. As a class, they seem to be hard on the electronics. Still love them though.
As an example of good service, my 4 year old TW accustic Raven one turntable had a problem with the motor recently and an unreliable switch on the power supply. TW suppied a motor and GT audio in the UK, fitted it and replaced the switch, all for no charge.
Secondly, I have had problems with valves, not tube failure, you expect that, but thermal damage. As a class, they seem to be hard on the electronics. Still love them though.
As an example of good service, my 4 year old TW accustic Raven one turntable had a problem with the motor recently and an unreliable switch on the power supply. TW suppied a motor and GT audio in the UK, fitted it and replaced the switch, all for no charge.