Look at Steve and others who can and will use any tech if they feel it can be done right.
He can't go 24bit multibit converters as there are none made for him to buy, so he has to go DS or get the newer hybrids as shadorne bought up.
He uses Analog Devices Delta Sigma chips and one of his quote was
"we can select the digital filter with this chip, we can essentially make this Delta-Sigma sound a lot like a NOS R2R DAC"
"Because we can select the digital filter with this chip, we can essentially make this Delta-Sigma sound a lot like a NOS R2R DAC, but also supporting hi-res files"
Cheers George