With modern, well done recordings, there is generally no need to use tone controls if you have a harmoniously integrated system. BUT, I sure do find that a number of older recordings from 20+ years back benefit from slight adjusments. Personally, on "thin" sounding old recordings, I think the slight loss of transparency resulting from engaging the tone controls is more than comensated for by the enhanced harmonic richness.
Neutral/Bass Treble?
when you listen to speakers my friend said you should always set the amplifier to neutral meaning the BASS straight up 12.O'clock the TREBLE as well straight up 12:00 O'clock and then put in a CD and listen but never ajust the BASS or TREBLE is this true? and if it sound BAD then the SPEAKERS are BAD? Shouldn't I be adjusting the BASS and TREBLE for each CD recording?