Yamaha RXV 1800 multichannel inputs issue - Page 2 - AVS Forum
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post #31 of 36 Old 03-08-2012, 05:07 PM
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*wonders where the deception is?*

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post #32 of 36 Old 03-08-2012, 05:11 PM
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Quote:
Originally Posted by Remonster View Post

Why would it matter? Once anything is recorded digitally, it's nothing more than a series of ones and zeroes representing an audible signal. All a DAC has to do is convert those ones and zeroes into an analog waveform. That is the beginning, middle and end of a DAC's job.

Just because you spent money on a new DAC (five times) and think you heard an improvement each time, doesn't make it necessarily so. The unfortunate reality is the human brain is easily deceived by preconceived notions, but there is no arguing with the science.

I want to be clear about one thing: I am not saying every single DAC sounds the same as every single other one, many of them seem to have been built with equalization (for example a bass boost) that makes them more pleasing to audiophiles who think it's a good idea to buy an entire chain of components which each colors the sound, but the majority of mainsteam DACs (especially when it comes to the ones found in AVRs) are just designed to do their job without artificially coloring the sound and among those, you will never, ever hear a difference.

There are major differences in DACs for their electrical performance specifications..
See the below link..

http://www.cirrus.com/en/products/d-a_converters.html

Next check the 1st DAC, CS4334 now compare its specs to the CS 4398, the differences are quite significant.. As you may know Crystal/Cirrus Logic is one of the larger supplier of DACs to the audio, automotive and CE product segments.

For your info..
The cost difference in 100K qtys the cost of the 4398 is 8x the cost of the 4334..

Another good demo comparison for DACs is to take an iPod and AVR that can play its iPod audio digitally through USB..
Denon, Pioneer and Onkyo have models that can do this. Next connect a simple 3.5 m/m cable > RCAs from the iPod Line Out to a stereo input on the AVR, also connect the OE iPod cable through USB. Select a good quality audio track and compare the analog audio to the digital audio, there is a very big audible difference.

Keep in mind, the audibles differences are not just the DAC but related to the overall circuit design, however this part is a major contributor to the sonic differences..

Just my $0.02...
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post #33 of 36 Old 03-09-2012, 07:13 AM - Thread Starter
 
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This just in from the Yamaha rep that answered that the analog inputs had to go through the DAC and DSP:

"Actually after further investigation it does not touch any Digital chips and would be true analog."

All righty then.
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post #34 of 36 Old 03-09-2012, 07:29 AM
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Quote:
Originally Posted by M Code View Post

There are major differences in DACs for their electrical performance specifications..
See the below link..

http://www.cirrus.com/en/products/d-a_converters.html

Next check the 1st DAC, CS4334 now compare its specs to the CS 4398, the differences are quite significant.. As you may know Crystal/Cirrus Logic is one of the larger supplier of DACs to the audio, automotive and CE product segments.

For your info..
The cost difference in 100K qtys the cost of the 4398 is 8x the cost of the 4334..

Another good demo comparison for DACs is to take an iPod and AVR that can play its iPod audio digitally through USB..
Denon, Pioneer and Onkyo have models that can do this. Next connect a simple 3.5 m/m cable > RCAs from the iPod Line Out to a stereo input on the AVR, also connect the OE iPod cable through USB. Select a good quality audio track and compare the analog audio to the digital audio, there is a very big audible difference.

Keep in mind, the audibles differences are not just the DAC but related to the overall circuit design, however this part is a major contributor to the sonic differences..

Just my $0.02...

I suspect the differences, wide as they look on paper, are not audible, at least as far as the DAC chips themselves are concerned. As you say, the rest of the circuitry probably drives the sound differences. I doubt an iPod has the same buffering and isolation as your AVR or an outboard DAC.

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #35 of 36 Old 03-09-2012, 07:38 AM
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thread title edited for clarity/ no need for the drama

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post #36 of 36 Old 03-09-2012, 09:02 AM
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thread cleanup

limit posts to technical issues

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