I was interested in a Schiit Lyr - but say I let the tubes COMPLETELY die because I couldn't pick up the subtle tell-tale signs that they were about to go - in that moment when they blow up will the massive shock sent down the signal chain burn the voice coil of the headphones plugged into them?
I know the Lyr is a hybrid - but the same question applies to all-tube amps?
And also, the thing with tubes is that they gradually degrade in sound quality - but your ears also become accustomed to the change in sound. So what starts off as a $5000 dollar sound quality amp could degrade into a $200 dollar quality amp within 2 years of use - and you'd NEVER KNOW!! So is that kind of wasting your money?
Finally, assuming 1 hour of use per day, when would YOU replace the tubes? Don't ask me to trust my ears, because, given the gradually becoming used to the degrading sound quality argument I placed above, I don't trust my ears!!
Is there a special proceedure to the whole process? I've heard of biasing? Is that necessary? Do you have to pay someone to do that? Or can you buy readily-biased tubes?