obzirom da u pretežito besplodnim raspravama na ovu temu, koje u pravilu nakon tehničkih rasprava odu u egzistencijalnu filozofiju, na stranici hifiberry
, inače tvorca digi/digi+ i sličnih čvaraka postoji zanimljiva rasprava između konstruktora digi/digi+ kartice daniel matušeka, blogera dim-dima, te blogera petera, koja ima zanimljivih detalja koje vrijedi pročitati
There is no way that the manufacturers of a Pi, or anything with a similar price, can put separate clocks in their product, and the effect of the resulting jitter is not noticeable to the vast majority of people, no matter the quality of their audio gear.
The author pretty much says that at the end of the article. If you feel that you may be one of the few with the golden ear and the $10K+ to spend on audio, who would notice this source of distortion, I noticed the DAC+ Pro has separate and presumably jitter-free clocks.
If you are a genuine audiophile then you would want to eliminate any potential sources of distortion, whether you can hear it or not. You should do so even if you can't tell the difference, because distortion adds up, and you might be able to tell in the final result. If you do want to sit in that game, bring money, and lots of it. On the other hand, if you are an audiophile with ears and wallet to match, you probably are not streaming MP3s using a Pi.
Personally, when it comes to the Pi, similar devices, and any directly coupled DAC, I think there is more to be gained from a clean power supply (something that seems to be hackable on the Pro), and the usual precautions to keep the signal path clean and short, after your precious audio signal leaves the circuit board and enters the big bad world full of switching power supplies, bad grounds, EMI and RFI noise, and speakers with 10% distortion.
If you want to have a audio transmission that is jitter-optimized, just use our HiFiBerry DAC+ Pro or Digi+, otherwise the DAC+ standard will be also ok. Some people might hear a difference between the DAC+ standard and Pro, others might not hear it. We're talking about very, very subtle differences here.
USB audio on the Raspberry Pi often has problems at higher sample rates, therefore I would recommend our solution. The Digi+ has no I2S output as teh DAC+ Pro has it.
mislim da je smisao jasan, čak i zlatouhi koji čuju distorzije napajanja, nakon svih peglanja dolaze do matične ploče, procesora, rama koji je raj za dodavanje izobličenja. obzirom da u dogledno vrijeme neće napraviti audiofilsku matičnu ploču, procesor, čipset, ram ili prihvatiti stvari onakve kakve jesu i čistiti smeće gdje se to može napraviti...