Maybe it is the very first time that you have seen a second-hand Wavac 833 1.3 is for sell except if you like to pay 68000$ in USA or 65000 Euro in Europe. This single ended mono block amps are almost new 3 months old and used as demo models the first 2 months the original owner has to sale them because of personal circumcises. The Wavac 833 1.3 are on of the best amps out there, they are 150 watt pure class a single ended which will drive any speaker. The finesse and musicality and purity of Audio Note Ongaku with the power and slamm of the big Krell. They are located in Netherlands and are 230 volt!