Lewn is 100% right. It's a personal trial and error thing. Always will be. It doesn't matter what part of your system you are trying to optimize, it will always take multiple attempts to get the sound your ears desire. And it will take years, and years. That's why I always say enjoy the journey.
I think, unless you missed something, wrong cables or tubes in phono preamp, as an example, there is no way around it - you have to upgrade the table. Then..you go from there.
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