I don't know how many 'popular' HDCD's there are out there, but there are quite a few that are to my liking. A great number of Grateful Dead CD's (probably more than half) are HDCD, as well as 311's newer cd's. beyond that, I'm not sure.
I don't know if HDCD is dead or alive, but IMHHHHHHO, had Pacific Microsonics, who developed HDCD, not been so paranoid over how its clients applied the technology, and did not impose choking restrictions in granting licenses for the manufacturers' use of the technology in their products, HDCD would have been more readily available, more popular, and possibly broken through into the mainstream- a la Dolby. I think PM's imposing of requirements restricting the way the technology could be applied, in granting license for its use to manufacturers only if they meet those requirements, stifled the exposure of HDCD, and ultimately quenched any possibility for the technology taking off.
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