it's an open secret that the original AN1x has been re-voiced and re-tweaked in this new incarnation to make it sound as close as possible to this famous Sequential Circuits synth. So close, in fact, that many P5 owners allegedly haven't been able to tell the difference. It's been some time since I last played a Prophet, but I've little doubt that Yamaha have got it right. This emulation sounds wonderful, and it makes most soft synths sound bland by comparison. It's a long time since any synth made the hairs on the back of my neck stand up, but the PLG150AN managed it