From the moment we wake until we fall asleep we're hearing everything within earshot. Our ears are constantly receiving, processing, and sending information to our brains for analysis. Most of what we hear can be ignored—passing daily noises with little to no importance.
But when we're fortunate enough to spend some quality time with our stereo systems we can change all that. We can focus our attention on the music and ignore the rest of the world if just for a moment: the joys of rhythm, harmony, inventiveness, and genius are all within reach of the remote control.
But focus comes with the requirement of great sound. I cannot focus well on a tinny sounding music reproduction device. In fact, the more I focus the greater my revulsion.
The closer to live our systems sound the more intensely we can focus on music's rich beauty.