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I have a Panasonic XP50 DVD player, and it features an upsampling option to enhance regular CD's. It upsamples them to 88.2Khz/24 bit, and there are 3 modes. My question is, does this upsampling increase sound quality on a relatively inexpensive player such as this one? I am using the optical digital out connected to a Sony STR-DA4ES receiver, it is receiving a 88.2khz/24 bit PCM signal so it works OK. The thing that worries me is that there are 3 modes of upsampling


Mode1 : Sharp acoustic imaging for pop/rock

Mode2: High clarity sound for jazz

Mode3: Smooth full sound for classical


I really don't like the idea of the upsampling coloring the sound of the music, changing its character at all? Does anyone have any experience in upsampling CD audio? Should I stick to mode 3, or just avoid upsampling alltogether. Testing a few tracks by ear, it does sound like upsampling helps the clarity of the vocals somewhat, overall mode 3 seemed to be an improvement in sound over non-processed, but I've only listened to a few tracks.
 
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