While I haven't (and probably won't) try millercarbon's recommendation of the Origin Live One Gravity record weight, I have tried two tweaks on my Rega P8, which I plan on upgrading soon:
Firstly, the P8 without any weight or clamp did have quite a bit of resonant sound, which muffled detail. A record weight improved the detail noticeably. A SOTA reflex record clamp markedly improved detail, clarity, etc to such a great degree that I'm not in so much of a hurry to upgrade my turntable now.
I also placed the Rega P8 on different objects: a walnut component stand, sitting on a concrete slab still left some background noise, which wasn't noticeable, until I placed the P8 on hockey pucks, whereafter, the noise floor dramatically dropped. I then placed a sponge puck under the hockey puck, and the noise floor dropped more, and it is now quite silent.
Now, all this does decrease the resonances, which Rega philosophically says are imporant to vinyl playback; however, in my system, these modifications definitely, and markedly improved the listening experience.