Mac 402 vs 6900

bunkeromantik, How did you ever find the polarity problem. I may be leaning towards the ma6900 again. My listening room is rather small , therefore 200 w/side is all I'll need. You did mention that the bass does not have the wanted impact. Do you think higher wattage is an answer?

I'am not sure how a power cord has wrong polarity. How did you find this out?? Arthur

This is simple but you got to have special "pen" that indicates with neon-light when you touch hot lead. That is how you do it. Looking stright at the amplifier plug with ground lead on top on the right is hot lead. I had it wrong on my power cord.