Schiit Valhalla purchased directly from manufacturer. All 4 vacuum tubes have been replaced 1 time with matched tubes directly from Schiit, and there is some active use on the replacement set, although they still sound quite good. Metal outer casing has minor cosmetic damage -- see pics. The bottom rubber feet would not stay attached on the metal so those are missing from it -- see pic of the bottom of unit. Plenty of power to drive even demanding headphones.