sacd fanciers should audition carefully

I wanted a dvd player that could also function as a back-up sacd player for my older high end Sony player. The Denon produced a very smooth and subtle image from dvds, and at first seemed to do audio well in all formats. But I soon started to note that all sacds seemed to have hiss, not unlike the tape hiss of old. When played on the Sony via the same equipment the hiss was absent, the background dead quiet as it is supposed to be. I attributed this to a failure in the noise shaping filter, and got another sample - same problem. This problem may be ignored in casual listening - but that is not the ultimate purpose of sacd. I got a refund.