My father in law has been giving me some of his old equipment over the years, and over Christmas he gave me his old CD player. It's an Esoteric (Teac) CD-Z500. I have it set up to a B&K Pro10-MC Pre-Amp w/ a B&K Sonata EX-442 2 Channel Amp. It was manufactured in 1990, but the sound is incredible, considering it's replacing a $150 Sony 5 Disc I bought at Best Buy a decade ago. I have found very little about it on the web and hope that someone can fill me in on what they know about it.