Second time this weekend. It's not your speakers. They didn't change. It's your ears that changed. Pretty normal to develop this kind of sensitivity with age. Started happening to me a few years ago.
A lot of the problem is ringing that is the result of component vibration and can be easily eliminated and tuned out with springs. I would get a set of Nobsound springs. You can start with one of your turntables, or the amp, doesn't really matter they work about equally well under everything.
The great thing about springs, they will not only improve detail, but Nobsound will allow you to tune your system to be a lot warmer without giving up much if any detail. You may well notice more detail even while making it much warmer.
This works because the way springs work, as the load changes the resonant character of the springs changes. When loaded enough to compress about half way they are very neutral, with a great top and bottom end and wonderful midrange. Remove a few springs so they compress more and they shift to a warmer sound with fuller bass and a smoother top end.
At $30/set of 4 these are easily the best you can do for the money. They also come in an acrylic or plastic version that is slightly warmer than the normal aluminum version. Also you will have left over springs, which if you have a 1/4" drill bit you can make into extra footers. These will even work under your speakers. Highly recommended.