Dear @honeyooi : I still own the XV-1s and owned the Rua and both like a stable tonearm, so unipivot is forbiden but not only with those cartridges but with any one. If your tonearm is with gimbal bearing design just fine.
Transducers always makes a difference and in your case speakers can do it where you always should can make the room treatment modifications if those " new " speakers achives your up-grade/improve targets. The other system transducer is the cartridge and today there are several LOMC designs that easily outperforms the RUA.
Phono stage unit can makes a diffrence for the better and in your system you can look for an active high gain phono stage. Your SUT only degrades the cartridge signal.
You have different alternatives to up-grade your room/system quality level performance that depends too of your budget level. Those alternatives could be more important that your TT.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.