“Everything you’ve heard is obsolete.” A very bold claim, but this sampler CD was enough to convince my family that we had to have one in 199x. It “converts” stereo into “3D surround sound” using only 2 speakers or even mono to stereo. Works with music/games/movies/anything. Unfortunately I didn’t find the power supply and there’s no voltage/polarity markings, so I’ll just have to wait to see if I’ve been missing out not using it this whole time. At least the CDs still work.