Question About DACs

The fact is I don’t belive

That is your belief, and your entitled to it. 

The fact that George says R2R Multibit is bit-perfect and D/S DACs aren’t is just nonsense.

You need to read an learn a bit more. PCM is converted more "bit perfect" with R2R than with DS 

rlb61
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.

Your MF Nuvista cd runs Delta Sigma dacs PCM1738E’s it was meant to do SACD but there were huge problems at that time with Philips laser drive mechs as the MF Trivista sacd players proved also to be amassive lemon none have survived and can’t be repaired, so it was done CD redbook only with different Sony drive mech.

The Schiit Modi,Gumby, Bitfrost and Yaggy, all in their more expensive option run R2R Multibit dacs, these are the ones getting good reviews.

R2R Multibit is the better dac option to do PCM Redbook with, as it converts "bit perfect", Delta Sigma converts a facsimile of it.

So if your only doing Red book CD then the Schiit ones in R2R Multibit option should be better than your Nuvista, and use your Nuvista as the transport, or sell it and get a Cambridge Audio CXC transport only cd. 


Cheers George

Haven't heard those two, but the Yaggy is very good and they all come from the same stables. 
Schiit's  Mike Moffat the designer is no slouch, he made Theta Digital no. in dacs when he was with them.

Cheers George