Why buy older digital gear?


I've seen a lot of Cal Audio gear for sale recently, most notably the Cal Delta and the Sigma dac. I recall these units where popular in the early 90's. Why spend $500-$600 on outdated technology? Is it because the selling price is much lower than the original retail price? I am certain that todays budget gear would surely outperform any of the older players? Am I wrong or are these components still worth a listen?
Thanks
cody
........The "old" Pioneer PD 65 transport is still an excellent transport. I'b be more concerned about buying older DAC technology though. Cheers. Craig
Because it still reproduce very good sounding music. Old Cal Audio Tempest with 4x oversampling will surprise you with its pleasing sound, not associated with digital sound of that era. Or better yet, Linn Karik/Numerik combo, SFCD-1. I've been lucky to pick DPA 1028 DAC, circa 1984, and with my vintage Karik makes most 'analog' sound that i've heard from digital gear. I haven't listened SACD, or DVD-a yet, but those two formats aren't going anywere. Yet!
I have a krell 30i with no upgrades in one of my systems that I love listening to and its DAC is first rate for my 300 disc changer I also have hooked to it. I never think of it as old technology - just good sounding.
...and because some brands still do old tech producing finest CD players such as BAT, Burmester, Cary.