More bits isn’t always better.Correct, RedBook, 16/44, 24/96, or DXD, done with R2R Multibit and done right is "Bit Perfect", where DS (Delta Sigma, 1-Bit, Bit-Stream, Single Bit), is just a facsimile. But it does do DSD, but then there a few discrete R2R Multibit dacs out now that can also do DSD now.
To me the best Delta Sigma dac chip I’ve heard doing RedBook, was one that used a Delta Sigma Burr Brown dac chip in a YBA Dac and Shanling CD , but it was a Hybrid, having the first 4 bits as multibit but the rest taken over with Delta Sigma, that was the Burr Brown PCM1794 or 94 or 98?
It seems to me that TI (Texas Instruments/Burr Brown) with their later dacs "are coming about face" to R2R again and doing these 4 bit Hybrids, instead of their full Delta Sigma PCM1738 etc, as to do full R2R (eg PCM1702/1704etc) is going back to very high costs again because of the manufacturing of them eg: laser trimming all those R2R resistors.) Where doing 4 bit is not too expensive but gives increased sound quality.
Cheers George