I must agree with twoleftears on this. Listen to the Sopras for at least a week. Get acquainted or acclimated to their sound. Don’t be in analytical mode the whole time but relax and enjoy the music. Pay attention to what your feet do. Do they move instinctively? If you must tap your feet, that’s a good sign. After you have had enough casual time with them, then put the old ones back in the system. Most of the time I can tell within 2 minutes which ones I prefer by what’s missing or what’s been added. Take your time.
And if you bought them new, then it is a matter of break in. I’ve had to leave the room during the break in of some pieces. It was that awful. But it settled in nicely. Also, you may need to load the cartridge differently to dampen the highs or adjust subwoofers differently (if you have any).