Question About DACs


My CDP runs an internal Burr-Brown 24-bit DAC, and a Crystal Semiconductor CS8420 sample-rate converter chip that upsamples the CD data to 96kHz. It’s an older CDP obviously, but are the newer external multibit DACs, such as the Schiit Gumby and Bitfrost, far superior to what I have now? Or, would any improvement be a slight one? Thanks.

rlb61

Showing 1 response by yage

@georgehifi - I’m afraid you need to learn more about DACs. The only DAC that would play the bits back as they’re stored on a compact disc is an R-2R with no oversampling. None of the Schiit DACs fit this description for 16 bit / 44.1 kHz program material as they use an oversampling filter, either 4x or 8x. That means 75% - 87.5% of the samples fed to the DAC chip (which, incidentally, isn’t even a straightforward resistor ladder) are interpolated.

Most of the R-2R DACs which do not use oversampling also do not use a reconstruction filter, which introduces its own set of sonic aberrations.

There’s absolutely nothing wrong with sigma-delta quantitatively or qualitatively.