What are dolby nr/4channel adapter in and outputs for on my 9090 sansui stereo? What will happen if i hook up 4 or 16 ohm speakers to this? Ohm rating on the back states 8 ohm. Please help me as i am blowing alot of stuff up with this amp.Is this amp to much power for sansui sp-x7's,cerwin vega e715's, and wharfedale e50's?