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July 30, 2009 - 8:21pm
#1
Numerical jitter measurements for dCD Scarlatti DAC?
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Good one.
Pull out your copies and compare the Ayre 5 and 7 performance for jitter vs the dcs units. Feb. '09 for the Ayre units and Aug. '09 for dcs, but you knew that.
To me that Ayre C5-XE is, at least, as good if not better with the C7 certaily taking no back seat either. Fig 13 and 15 are upsampled to DSD for the dcs. In fig 14 and 16 what seems to be missing is the 16 bit quantization noise from Ayre graphs.
No wonder the Ayre players are held in such high regard. I wish Mr.Fremmer had one (C5-XEMP) in his system to do a follow up vs the dcs stack. It makes the Ayres a hifi bargain to be sure.
Jim
Thanks John and other members.
However, let me clear it that my intent is to really complete my excel sheet and not to pick on something or someone.
I am not very good at comparing graphs but it is very easy for me to compare number against number when everybody is claiming minimum jitter in the universe for their products. dCS does not look the state of art when it comes to jitter rejection. Not only Bryston BCD-1 CD player graphs looks much cleaner but the number is also low.
How should one explian and understand the logic behind Zanden fans when the product falls in the highest jitter products ever reviewd in Stereophile? If Zanden and its fans are ture then all claims about jitter's relations to quality of sound are wrong?
Bryston, dCS and Zanden camparison review will be an instant hit!
Now I just forgot the name of that British magazine that does such comparison reviews. 
Say John, how's the AP system on it's own for measuring clocking jitter? Does it have a preset function in the software for such a thing? Is it straightforward (to measure and record jitter analysis) to do so?
I'm looking to lease one for that exact purpose and need to know what I'm going to run into before I run into it.