Phono Preamp for Thorens TD203 w/ Ortofon 2m Blue

I bought a demo Thorens TD203 turntable w/ Ortofon 2m Blue cartridge > Behringer PP400 $20 phono preamp > Mystere A11 EL34 tube integrated amp > Seas Froy mk3 speakers. It has good PRaT but sounds thin with shrill highs. My Rotel FM tuner sounds better in many respects. I’m assuming the Behringer phono preamp is the culprit. I’m disappointed with the sound playing vinyl.

I was thinking of getting the Schiit Mani phono preamp, but am second guessing myself as to whether the combo will have the synergy to resolve the problem. Does any one have experience w/ the Schiit Mani and/or the Ortofon Blue. Any other budget phono preamp recommendations in the price range of the Mani to consider.