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502 Posts
I found this post on another site and found it interesting:
"Except that the current implementations of HDMI have much higher jitter figures than SPDIF. In the Feb 2009 edition of the Hi-fi News magazine Paul Miller measured the following jitter results for a few A/V amplifiers:
Denon AVR-3803A
---------------
SPDIF: 560psec
HDMI: 3700psec
Onkyo TX-NR906
---------------
SPDIF: 470psec
HDMI: 3860psec
Pioneer SC-LX81
---------------
SPDIF: 37psec
HDMI: 50psec
Yamaha RX-V3900
---------------
SPDIF: 183psec
HDMI: 7660psec
And no, those figures for the Pioneer aren't typos - it just shows what can be done when implemented correctly! Unfortunately the Denon and Onkyo amps were rated to sound the best, but I believe that had more to do with their amplifier sections than the jitter and pre-amplifier/processor sections."
I haven't had a chance to read the full article yet, but some of those jitter measurements are astonishingly high. The Denon unit is surprisingly bad.
Perhaps Bob Stuart is right about HDMI and jitter?
"Except that the current implementations of HDMI have much higher jitter figures than SPDIF. In the Feb 2009 edition of the Hi-fi News magazine Paul Miller measured the following jitter results for a few A/V amplifiers:
Denon AVR-3803A
---------------
SPDIF: 560psec
HDMI: 3700psec
Onkyo TX-NR906
---------------
SPDIF: 470psec
HDMI: 3860psec
Pioneer SC-LX81
---------------
SPDIF: 37psec
HDMI: 50psec
Yamaha RX-V3900
---------------
SPDIF: 183psec
HDMI: 7660psec
And no, those figures for the Pioneer aren't typos - it just shows what can be done when implemented correctly! Unfortunately the Denon and Onkyo amps were rated to sound the best, but I believe that had more to do with their amplifier sections than the jitter and pre-amplifier/processor sections."
I haven't had a chance to read the full article yet, but some of those jitter measurements are astonishingly high. The Denon unit is surprisingly bad.
Perhaps Bob Stuart is right about HDMI and jitter?