I have been looking at the high praise the nOrh LeAmps are receiving. I currently own 5 Marantz MA500s, I am very happy with these, but the recent trends towards purchase direct from factory for bang for the buck has been appealing to me. My latest, the SVS CSUltra has been blue ribbon winner. My system consists of a Marantz AV560 Pre/Pro, Panasonic A310 DVD, Marantz MA500's for the M&K LCR 55 speakers, a MA700 for the SVS CS ultra, connects from BetterCables, AudioQuest and a Max Rochlin Digital Cable. The M&K's are 4ohms. Listen to about 30%music 70%movies. I am mainly wondering if this warrants the brain power to research more in pursuing the nOrh LeAmps or forget about it and watch a movie. I would only look at using these for the M&K's as the MA700 is working beautifully with the SVS. Thanks in advance to replies.