So I borrowed an old pair of AR 510 3 way speakers. I have a modified Counterpoint SA-100 power amp that I have used for a few years now. As most of you know I repair, modify components. The AR speakers with my parts upgraded Counterpoint SA-100 sounded just like an old pair of box speakers, warm, musical, but very boring. I recently rebuilt a Counterpoint SA-220 with bi-polar transistors and class A output stage but still using the main circuit board with the 6DJ8 tubes. Well to make this story short, WOW. What a difference. The SA-220 just walked all over my SA-100. The AR 510s opened up, had more dimension, more details and became even more musical. I sat there asking myself what just happened. What an improvement.
So while there are may people posting reviews here on Audiogon, I thought well if I would have posted a review of the ARs with my amp the review would have been much more different than if I was using the rebuilt Counterpoint power amp. Always learning something new is the way to look at all this I guess.