Matsushita/ Techinics ETA-68E300 output transformer

So I just won a pair of these off the bay for $121 shipped. I figured the would be excellent for a 45/46/any other small DHT. They have 5k/7k primary and 4/8/16 ohm secondary taps. I did not know Technics made transoutput transformers. Has anybody ever heard or used any transformers from Technics or know the full specs such as max current and max power output?