Originally Posted by dalidvd
Upsampling has been found to produce a smoother sound, and most audiophile players for the past 10-15 years have used it.
Upsampling, oversampling: the main difference is in the marketing. Modern DACs oversample internally to 192kHz or higher. The Sabre sigma-delta DAC in the Oppo internally converts to different bits in MHz range. The Sony SCD-XA5400ES also has a sigma-delta DAC.
CA chooses to use an external upsampling scheme before the DAC so the signal enters the DAC already at a high sample rate and presumably it won't be further upsampled inside the DAC (we don't know for sure). External solution may do it differently (whether it's better again we don't know) but it's not as if CA is the only one to do it. Don't forget some higher end Denon receivers upsample too. Some DACs upsample and now the Dolby TrueHD encoder is also upsampling to 96kHz.
Ideally I'd like to have the choice to choose the incoming sample rate from no change to 192kHz rather than just one solution for all blanket approach.
However good the analogue sound is in the player this has to be weighed against the disadvantage of the lack of other digital processing and room correction usually carried out in the receiver. The market for MCH analogue players is getting smaller and smaller when more people move to digital for the right reasons.
The previous model 751 had bass management issues too: it'd be interesting to know if the 752 has rectified this.Edited by Kilian.ca - 3/5/13 at 8:21pm