IF/When you decide to try and keep tube gear: Buy a simple tube tester!!!!!
Give yourself the easy confidence of knowing simple: short, no short, good, bad, how strong, matched tubes similar strength.
I have a big fancy one gathering dust because my simple portable one and the big one always agree.
https://www.ebay.com/itm/124523483585?hash=item1cfe2d91c1:g:6hYAAOSwKm9f~K3J
some tubes can not be tested on older units, check for that.
btw, what do you mean 2,000. hours. What tubes? Many, many tubes last 10,000. hours
Give yourself the easy confidence of knowing simple: short, no short, good, bad, how strong, matched tubes similar strength.
I have a big fancy one gathering dust because my simple portable one and the big one always agree.
https://www.ebay.com/itm/124523483585?hash=item1cfe2d91c1:g:6hYAAOSwKm9f~K3J
some tubes can not be tested on older units, check for that.
btw, what do you mean 2,000. hours. What tubes? Many, many tubes last 10,000. hours