It is built like a tank and has served me very well. I have switched out the stock tubes in the line and phono stages and current tubes include:
Phone Stage: (2) JAN GE 5670
Line Stage: (5) EH 6922Last year
the previous owner had some upgrades done and have the receipt which describes the work done as follows:
Reworked line stage power supply;
Lowered bias on gainstage tubes and split power supply;
Upgraded filter caps;
Added bypass caps;
Upgraded line stage coupling caps to audiocap theta.
It certainly holds its own, especially since the upgrades. If any local buyer wants to audition, please feel free to let me know.