Dannys OB subs and Otica speakers including his Otica center are the mainstays of my systems speakers. Franks amps power the big energy part. Im in the process of building some Nelson pass stuff. Heard through a friend those amps. I want to build a 2 channel system with it, but right now im still all in on Dannys stuff. I love dynamic loud stuff. Danny and his stuff works with any music imaginable. Wow. Id love to add a HARP from GR to my Oticas if it’s ever offered. Anything to jump, kickstart, thrust or whatever to take it to the next level. Happy listening.