I like to have a backup for certain components on hand. I don't like to be without music at home, so if my integrated amp or my phono stage were to give out, I would need to start shopping (not a bad thing, of course). But I keep a (B-stock) Yamaha A-S701 and a Schiit Mani on hand as backups. They also serve as a good basis for comparison to whatever gear I have in my main setup.
In addition, I try to keep my stereo spending as close to budget neutral as possible, so I sometimes sell something before deciding what to purchase to replace it. With the backup gear, I can keep the music playing and take my time to make a good decision and find a good deal on the next component.
In addition, I try to keep my stereo spending as close to budget neutral as possible, so I sometimes sell something before deciding what to purchase to replace it. With the backup gear, I can keep the music playing and take my time to make a good decision and find a good deal on the next component.