lovely vocals, dynamics, detail, air, and bass. i want more of it all
As presented, there seem two hardware solutions:
*A better phono stage -- an expensive proposition UNLESS you go diy (or find someone to build one for you from a kit)
*Tweaking the input stage & volume pot in the Asl. Maybe s/one has tweaked your 300B -- or the company itself can propose something.
Otherwise, changing your cartridge, another (expensive) option, may not yield all its potential.