Axtl, I've heard but never owned a SP-10. They can sound wonderful. Many feel it is one of the best preamps ever made for a phono based system.
Here are some considerations:
* can be expensive to purchase due to reputation,
* two box system w/ separate power supply (may offer better [quieter] performance but requires twice as much shelf space,
* runs hotter than most preamps,
* many tubes so expensive to replace,
* like any component of this vintage, will require some restoration (electrolytics at a minimum), and
* if vinyl playback will not be a majority of your listening you may find several alternatives for less money.
Good luck.
Here are some considerations:
* can be expensive to purchase due to reputation,
* two box system w/ separate power supply (may offer better [quieter] performance but requires twice as much shelf space,
* runs hotter than most preamps,
* many tubes so expensive to replace,
* like any component of this vintage, will require some restoration (electrolytics at a minimum), and
* if vinyl playback will not be a majority of your listening you may find several alternatives for less money.
Good luck.