He may be using them on the Pass XA 100.5 temp amps. When he get's the XS300's back, I doubt he would plug them into anything other than the wall outlet. They are consuming close to 1100 watts each whenever they are turned on. I run a dedicated P5 for each monoblobk (XS150'). They consume 550 watts each. My current power cords are not long enough to try the outlet direct. Next week I get my 4 Nordost Odin power cords which are 2.5 meters each and the first thing I will do is plug them directly into the wall to see if they perform better than through the P5's.
Whether he can use the Triton's with his XS300 because of power ratings is not too interesting to me. Frank mentioned dramatic improvements with Triton conditioning on the XA 100.5, which have similar specs (power consumption / output) as my monoblocks.