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Discussion Starter · #1 ·
Information culled from Miller Audio Research via cut and paste. Apologies if there was a bad C&P. Let me know. More info is available on their site. You need to register (free) to get the reports. Units that received failing grades were generally for reasons not given here.

DEVICEUnit StatusOutput Level achieved (re. 1000Hz into 8000.0ohm)Total correlated Jitter
Bryston BCD-1 (Balanced outputs)PASSED4.75V (Peak = 13.53dBV or 4747.8mVrms, Left Channel)117psec (Left Channel)
4.76V (Peak = 13.55dBV or 4759.5mVrms, Right Channel)116psec (Right Channel)
Nagra CDP Concept CD PlayerFAILED3.40V (Peak = 10.63dBV or 3401.6mVrms, Left Channel)1244psec (Left Channel)
3.37V (Peak = 10.56dBV or 3373.2mVrms, Right Channel)1244psec (Right Channel)
Pathos Digit CD PlayerFAILED2.22V (Peak = 6.92dBV or 2219.1mVrms, Left Channel)1136psec (Left Channel)
2.22V (Peak = 6.94dBV or 2223.8mVrms, Right Channel)1138psec (Right Channel)
Rega Saturn CD PlayerPASSED2.12V (Peak = 6.52dBV or 2118.2mVrms, Left Channel)204psec (Left Channel)
2.13V (Peak = 6.56dBV or 2127.7mVrms, Right Channel)210psec (Right Channel)
Pioneer PD-D9PASSED2.01V (Peak = 6.08dBV or 2013.3mVrms, Left Channel)127psec (Left Channel)
2.01V (Peak = 6.08dBV or 2014.3mVrms, Right Channel)129psec (Right Channel)
Chord Red Reference (44k sampling)FAILED6.19V (Peak = 15.83dBV or 6185.6mVrms, Left Channel)127psec (Left Channel)
6.19V (Peak = 15.84dBV or 6193.7mVrms, Right Channel)126psec (Right Channel)
Chord Red Reference (88k sampling)FAILED6.19V (Peak = 15.83dBV or 6185.4mVrms, Left Channel)119psec (Left Channel)
6.19V (Peak = 15.84dBV or 6193.4mVrms, Right Channel)118psec (Right Channel)
Chord Red Reference (176k sampling)PASSED6.19V (Peak = 15.83dBV or 6185.7mVrms, Left Channel)120psec (Left Channel)
6.19V (Peak = 15.84dBV or 6193.6mVrms, Right Channel)120psec (Right Channel)
Linn Majik CDPASSED2.00V (Peak = 6.01dBV or 1997.7mVrms, Left Channel)124psec (Left Channel)
1.99V (Peak = 5.99dBV or 1992.9mVrms, Right Channel)123psec (Right Channel)
Astin Trew AT3500 CD PlayerPASSED2.43V (Peak = 7.72dBV or 2432.8mVrms, Left Channel)67psec (Left Channel)
2.45V (Peak = 7.78dBV or 2448.9mVrms, Right Channel)66psec (Right Channel)
Astintrew At3500 (upsampled mode)PASSED2.41V (Peak = 7.66dBV or 2414.1mVrms, Left Channel)121psec (Left Channel)
2.43V (Peak = 7.71dBV or 2430.1mVrms, Right Channel)120psec (Right Channel)
Sony BDP-S300 CD/DVD/Blu-ray PlayerPASSED1.94V (Peak = 5.74dBV or 1935.4mVrms, Left Channel)122psec (Left Channel)
1.94V (Peak = 5.74dBV or 1935.8mVrms, Right Channel)123psec (Right Channel)
Bel Canto CD-2 CD PlayerPASSED3.87V (Peak = 11.75dBV or 3868.2mVrms, Left Channel)118psec (Left Channel)
3.88V (Peak = 11.77dBV or 3875.6mVrms, Right Channel)119psec (Right Channel)
Marantz SA-7S1 CD/SACD PlayerPASSED4.93V (Peak = 13.85dBV or 4927.5mVrms, Left Channel)123psec (Left Channel)
4.91V (Peak = 13.83dBV or 4912.5mVrms, Right Channel)121psec (Right Channel)
DCS Puccini (CD-to-LPCM mode)PASSED6.15V (Peak = 15.78dBV or 6150.9mVrms, Left Channel)141psec (Left Channel)
6.16V (Peak = 15.80dBV or 6164.4mVrms, Right Channel)141psec (Right Channel)
DCS Puccini (CD-to-DSD mode)PASSED6.07V (Peak = 15.67dBV or 6073.5mVrms, Left Channel)150psec (Left Channel)
6.09V (Peak = 15.69dBV or 6089.6mVrms, Right Channel)150psec (Right Channel)
Cairn TornadoPASSED2.11V (Peak = 6.48dBV or 2108.9mVrms, Left Channel)
 

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I'm not very knowledgable in this area, but I'm wondering why the "Benchmark DAC1 PRE" and "Astin Trew AT3500 CD Player" have Total Correlated Jitter numbers so much lower than the other tested devices. Does this make these two devices superior?
 

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Discussion Starter · #4 ·
Info at miller. Pass/Fail can mean any number of things such as a wandering clock, large amounts of distortion, etc. Registering is free.
 

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I've heard the Benchmark DACs... In a word... Wow! They really are 'all that' and worth the price.
 

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Most interesting is that many of them aren't all that different.
 

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Discussion Starter · #8 ·
would be nice to also have info for dac used and what the actual transport is with maybe links to the manufacturer's propoganda. this was hard enough pulling all this. yes, it does seem that jitters in the low hundreds of picosenconds isn't a big thing. variations in output level were interesting, don't you think?
 

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FYI, the jitter of the Benchmark DAC-1 is below the resolution of the Miller measurement suite, if it was measured using the National Instruments card. You are basically seeing the intrinsic jitter of the test setup, not the DAC, in that case.


Also, it bears repeating that these numbers aren't really useful because you need to see the spectrum of jitter, and you need to know what the time measurement refers to. There are about 3 or 4 different possibilities.


--Andre
 

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Just a heads up,

looks like some of those voltage figures are the balanced output and are double the RCA figure; e.g. 4 or 6 volts instead of 2 or 3.


Cheers

DT
 

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Discussion Starter · #11 ·
You friggin type with one hand!
 

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Discussion Starter · #12 ·

Quote:
Originally Posted by AndreYew /forum/post/15589060


FYI, the jitter of the Benchmark DAC-1 is below the resolution of the Miller measurement suite, if it was measured using the National Instruments card. You are basically seeing the intrinsic jitter of the test setup, not the DAC, in that case.


Also, it bears repeating that these numbers aren't really useful because you need to see the spectrum of jitter, and you need to know what the time measurement refers to. There are about 3 or 4 different possibilities.


--Andre

Data is provided at various frequencies for those who view the reports.
 

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Quote:
Originally Posted by Chu Gai /forum/post/15610781


You friggin type with one hand!

I type with 10 thumbs!!!!



BTW I should had pointed out that some of those voltage results are balanced and do not have the balanced outputs in brackets while others do.


Cheers

DT
 
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