Is My WLAN Controller Healthy (or, how do I program my stereo’s equalizer)?

When I was young, maybe early teens, I remember having a friend who’s dad was super proud of his stereo system.  I remember it had a stereophonic hifi turntable, 2 cassette decks (for dubbing), and it was even hooked to his reel-to-reel. I remember thinking of how powerful it was… I mean, LOOK at all …