I like them a lot. It's just that not having other reference points I don't know if I am missing something. And I have always been a big fan of Berning. But certainly the 509's are quite good.
Amplification for stacked quads?
Hello I have a pair of wonderful stacked ESL 57. Right now I am running them with a pair of EAR 509MKII monoblocks (100WPC) but I am considering Berning's ZH-230 (30 WPC) and the integrated Jadis DA-60 (60WPC). Has anyone had experience with stacked quads? Any recommendations in general? And how about the amps I mention here? Many thanks.