Since the high end of the cartridge tends to be a little bright (which you might not agree with,) records that have a bright high end of their own are exacerbated by volume increase.@rvpiano As I mentioned earlier, if you have a high output cartridge, loading of the cartridge is paramount for correct performance! If not loaded correctly it is common for the unloaded cartridge to be bright. This is due to an electrical resonance that is occurring due to the inductance of the cartridge and the capacitance of the tone arm interconnect cable (plus the input capacitance of the phono section).
For this reason, its a good idea to use a low capacitance interconnect cable- to push the resonance up and outside of the audio band!!
IOW the brightness you hear may not be an actual characteristic of the cartridge- and is just a setup issue; one which happens with many cartridges. Since this is a really inexpensive thing to deal with, its worth it to look into this before moving on.