Focal Sopras: twin 8 inch woofers; I'm guessing deep bass performance is your issue, as this speaker I'm guessing plays flat down to the low to mid 40-ish hz range or so. It might play deeper but at -3 dB or more; that's probably adequate for most music but it sounds like you want to bump it, and jam to some beats. If you want some "jump" to your system, get a fast sub. I'm guessing a 12 inch REL or Sonus Faber Sub would do nicely. A X-over with a sharp 18 dB roll-off would probably work well. You don't mention your room size; if your room is small, no dice mi amigo; you'll need a bigger room, but if you have a big room, then a sub will work out, I'm guessing. Good luck.
Looking for Speaker Input
My system is Luxman C900u pre amp, 2 Luxman M900u amps configured in monoblock mode driving Focal Sopra 3 speakers. All digital with Aurender W20SE streamer. DAC is Luxman D10x, which doubles as a CD/SACD transport. My question for the forum is I think the Focals are the weak link. What speakers would the forum recommend to go with the rest of my gear?