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In Reply to: 5700 vs dsp-a1 for 2 channnel audio posted by mike on May 06, 1999 at 07:39:13:
Well a few things come to mind. You should be running all digital inputs as the Yam converts analogue to digital anyway which will degrade the sound.As far as Denon, I doubt it will be much different. If music is the goal, then separating/integrating the systems by adding a 2 channel pre-amp would be the best move. Run the Yam thru the tape loop for HT.
Personally I couldn't careless and don't worry about new formats. There's always a new one on the horizon. When the software is in the stores and I mean all the software, then maybe I'd think about it. I doubt that will happen for a least a few years and likely more.
When/if DVD-audio/SACD/MLP/??? happens, dump the Yam and buy something new would be my advice.
I called Enon and Onkyo for kicks to see how they route the analog signal. Onkyo says that in stereo operation the analog passes through dithout another AD/DA. In prologic it would be re digitized; that would make sense.
Denon, on the other hand, claims all signals are processed in the digital domain, even in stereo. However, unless one talks with their engineers for sure, I am not a 100% convinced that the stereo signal would be digitized but certainly could be. I have yet to notice a difference either way. But, I would need convincing evidence from a properly controlled and conducted test.
Even Arny says that an extra AD/DA is not a good thing. I'm surprised you can't hear the difference.
The statement that "You should be running all digital inputs as the Yam converts analog to digital anyway" implies that all analog input is converted to digital. Please correct me if I am wrong here Rod, but I believe that this interpretation is incorrect. Looking at the block diagram for the DSP-A1, all the digital signals go through the DSP but the analog inputs also go to summing junctions that are called DSP/BYPASS. The anlog inputs to the DSP/BYPASS junctions are summed with the external decoder inputs and the DAC outputs of the DSP. In short, the unmodified analog signals pass to the right and left main speakers if effects off is selected (which turns off the DSP). If the DSP is active, its contribution would be summed with the analog inputs at the DSP/BYPASS summing junctions. The center and effects speakers are also available when the DSP is active or the external decoder inputs are used.I realize that this contradicts the popular myth that the DSP-A1 digitizes everything. Sorry about that, hope this info is helpful.
then they did do something right. It is true that *most* (an unfortunate generalization) HT processors/receivers do convert to digital.Certainly the analogue bypass would put it ahead of the Denon without that feature. Whether or not a 2 channel pre-amp might sound better is yet another question.
Thanks for the input.
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