I have a 15 wpc push pull Shindo amp and I'm finding that my Devore Super 8s don't have enough bottom end for me. The Devores are special speakers, with wonderful tonality and coherence in the mids and highs, but they just don't have the deep slam that I crave. I suspect that you're finding the same with your AN J's. The fellow that sold me the Super 8s moved up to the 9s and he reports that he's very pleased with them. When I took my amp to my friends with HE speakers Cain & Cain Abbys (95 dB) and Klipsch LaScalas (105 dB) my amp sounded absolutely wonderful. Conclusion- my amp needs a HE speaker for it to really shine.