Amp is completely overhauled with caps, zener diodes, servo opamps and what's not changed . Signal Tubes are very good testing American variety and power tubes are used good testing vintage Svetlana double wing 6550 types. It's in nice condition and sounds splendid. I'm not a big fan of the brand but have to admit it's a good sounding amp. It will come with original box (not perfect but perfectly usable ). Its a big, heavy behemoth, so shipping (from Detroit Mi 48212) won't be cheap $2200 and pics are coming.