You need to do one of two things...
Either start using a nice tube preamp, DAC, or CD player to smooth out the sound and soften the highs, or buy a turntable, cassette deck, or other analog source that doesn't sound harsh.
If the majority of your recordings sound harsh, then it's your system or source component, not your recordings.
BTW, how is the quality of your incoming AC? Do you at least have a good AC line filter or power regenerator?
Either start using a nice tube preamp, DAC, or CD player to smooth out the sound and soften the highs, or buy a turntable, cassette deck, or other analog source that doesn't sound harsh.
If the majority of your recordings sound harsh, then it's your system or source component, not your recordings.
BTW, how is the quality of your incoming AC? Do you at least have a good AC line filter or power regenerator?