Well, the very few very expensive players and receivers that can be digitally connected by I-link/firewire receive the SACD material in digital form and can apply digital processing(e.g. DPLII)to it. Other than that it's the receivers(e.g. some HKs)that first convert the analog SACD back to digital, process it digitally, then again convert it to analog for amplification.

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Enjoy the music, not the equipment.