EQ the sound system

I know “audiophiles” do not like to use any kind of “EQ” systems to get the right sound, but by simple placement of the speakers, and room treatment. I know that not all recorded music is recorded the same. Some have very little bass, and some way to much, and some just right. The same when it comes to treble. If we use sound tracks to get the right sounds from our system that we want, what happens when you play a recording that has way to much or to little bass. You would think having some kind of EQ device to correct the sound without having to re position the speakers, or changing out tubes to fix what we want to hear?

We have had a number of good conversations regarding EQ and tone controls, such as: