[sdiy] Digital Potentiometers vs DACs n VCA's?

[Bill Berzinskas]

Hello list.. 

after thinking that digital pots where the way to go, i'm starting to have my doubts..    

my major problems with them are audio noise when audio is run straight thru them to attenuate into a mixer and. 
Update noise.. since they're serial, i have to update them all at once, i think i get noise on each update..   

would I get better performance if I used them to control the gain of an opamp instead? 

OR,

would it be better to go with some sort of setup of DAC and VCA..  like an 8-bit DAC going into an SSM2164 or something?  

any input on this would be spectacular, as i'm rather annoyed with the background zipper sounds..  :-P 
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