Further, the Sabre uses asynchronous sample rate conversion on ALL Input data and converts into a clock rate of 40MHz. If we assume for ease of calculation a 50KHz data sample rate (close enough to to the 44.1KHz used on CD) we can represent as many as 40MHz/50KHz or 800 individual levels using classic pulse width or pulse density modulation.
For ease of calulation I will round up to 1024 levels, which is equivalent to 10 Bit resolution.
This means that the raw resolution build into the ESS DAC is around 16 Bit for single speed (44.1/48KHz) Data, 15 Bit for double speed (88.2/96KHz) and 14 Bit for quad speed (176.4/192KHz) data.
I have to say that this is appreciably more real, raw resolution than most DAC's in the market offer. The ESS Sabre DAC's can actually represent CD Data in the analogue domain with no or very little noiseshaping, which may explain the fact that many find it superior to many other DAC's.
For reference, a highly regarded (by some anyway) 32-Bit DAC by another manufacturer uses a 32 Level (5 Bit) multibit section and 128 Times oversampling at all datarates (7 Bits), thus meaning the actual core of the DAC is able to provide only 12 Bit real resolution without noiseshaping.
http://www.audioasylum.com/audio/digita ... 53466.html
Sont sympas les gens mais y pourraient prévenir que le supposé meilleur DAC qui soit, est l'un des rares (voir le seul) à péniblement atteindre les 16 bits de résolution d'un CD
