"If Creative Labs can be credited with giving the PC its voice, Turtle Beach is the company that let the PC sing. Over a decade ago, the company's ISA-based MultiSound sound card was the best PC sound card money could buy. It was also the first sound card I ever tested that could deliver better than 90dB of dynamic range. Turtle Beach has undergone many changes since then (including an acquisition by software maker Voyetra), but the company has continued to make reliable cards like the Santa Cruz, based on Crystal Semiconductor's 4630 audio processor. Its latest offering, the Catalina, switches over to VIA's Envy24 audio controller and appears to be hitting a lot of the right chords."
I'm guessing that most people use integrated sound on their motherboards these days. Sure there are some of us (including me) who have Audigy cards, but I think the days of cards such as this Turtle Beach Catalina card are numbered.