esanthosh said:
Seriously, I don't get why Wolfson DACs are so revered. Is it because of their sound signature? Is it because of some technical capabilities? Or is it because they have lesser issues than other DAC chips? Aren't there better DAC chips from better companies? Or is it due to their Price/Performance ratio? Any clarification for this n00b are welcome.
While we are on the subject,
WM8740 is a stereo DAC. What advantages does one get if they use dual WM8740? Cleaner signal paths? Any explanation which does not go way over my head would be very helpful.
I don't know much about DAC chips and am not experienced enough. But the mere mention of Wolfson DAC chip has been met with great enthusiasm in the audiophile community. I am just trying to understand. I know that CA uses Wolfson in their CDP / DAC. But some like it, some don't.
Besides, DAC chip + implementation is what makes a better player / DAC
I was almost tempted to reply this in a PM, however I thought it would be a good idea to share with the community. It is a very good question indeed, why use a dual Woltson DAC, when they are inherently stereo? To answer some of these we will have to traverse, to the genesis. I would try and keep it simple without getting into too much technical.
For a long time there has been bunch of audiophiles, who while were not scientific in their approach, came and developed some rules. These were never scientifically proven (at that time), but was not strongly disputed as these were close to the heart of some of the audiophiles. We have moved to portable audio today, however the true audiophile still rules the roost on the high end audio. (let me not dwell too much on this..)
They came about with some empirical rule, these were purely followed by the audiophiles.... (some of them were snake oils of course).... some of them (now most) were imbibed by the high end manufactures. Now over the years they have reached the portable audio setups. Rules like ... using the least path, tubes over the transistors, cables crossing, using cables instead of PCBs, direct solders, cables, records over CD (Analogue being better than Digital), Not using the equalizers in the signal path, direct path, switching off the video/light to preserve the audio integrity... one more //// Mono Blocks being better than Stereo! (There are of course many more ...)
I would focus only on the last point ... Mono Blocks over Stereo! Of course it is a manufactures delight, when he learns that he is going to sell 2 units instead of one. However some of it is true because of better current management (independent transformers), EM insulation etc. Using the dual Woltson DAC is an extension of this manufacturing reason. Signal path isolation, Thermionic emission, high mode sampling, eddies (eddy current) could be some of the reasons, however I have not come across any research papers on these.. The specs also says something: 120dB SNR (’A’ weighted, mono @ 48kHz)/ 117dB SNR (’A’ weighted, stereo @ 48kHz). The manufactures also claim "The Dual Differentail Mode allows two DAC to be used in parallel with the aim of improving performance ( abt 3dB improvement in SNR is expected). The DACs will output differential left or right channel data, depending on their configuration".
How apt are these design? Lets not dwell on this. They certainly do add price, also audiophiles crave about them. So some manufacturers have now imbibed these in their portable setups as on the onset they get an improvement of 3dB.
@Benny: Splitting the DAC may not have any use at all at the digital level (the DAC are split in any case). The path there after takes more or less mono slab path, improving further SNR. Yes you are right about LO, because it "kills the middleman!"
I hope it helps.
Sflo:2 is a good sounding PMP. I like them. I also like the Fuze+/Fuze/Clip+.
Disclaimer: We are the distributors for the Sflo:2 in India and this is an IC thread.
Update: Just got a mail from Nationite. The Nationite N2 on the HO sounds similar to Sflo2 HO.