I tend to buy much older stuff, like tube organs, old consoles, and large speakers, after finding them off the beaten path. Given that I tend to either purchase or trade for gear that, regardless of cosmetics, rarely has any recent service history, the story does mean something.
A single owner item usually means that the item was cared for by the owner for a long time. This means that the item was not abused, and probably functioned until that original owner was no longer able to utilize it. Cosmetics and the place of sale can help confirm this.
Any old item may need service. But equipment that was cared for is much more likely still be functional, and cosmetics are typically much better. Repairs are more likely to be "the ongoing maintenance" type as opposed to the "lets troubleshoot how bad this got messed up along the way" type. Its so much easier to replace signal path caps than trying to figure out some crazy problem that turns out to have been a hack job of a wrong transistor (or the transistor installed the wrong way).
A single owner item usually means that the item was cared for by the owner for a long time. This means that the item was not abused, and probably functioned until that original owner was no longer able to utilize it. Cosmetics and the place of sale can help confirm this.
Any old item may need service. But equipment that was cared for is much more likely still be functional, and cosmetics are typically much better. Repairs are more likely to be "the ongoing maintenance" type as opposed to the "lets troubleshoot how bad this got messed up along the way" type. Its so much easier to replace signal path caps than trying to figure out some crazy problem that turns out to have been a hack job of a wrong transistor (or the transistor installed the wrong way).