[sdiy] d/a, voltage references & multiplexing considerations

[Karl Ekdahl]

I'm after a d/a for audio use, high quality. I'm  thinking of using a 18-bit AD1861 with 0.008% THD (since i have them),  is this good for high-quality audio? I assume that i should use a good  voltage reference for the analog voltage in so i'm looking for  suggestions on components and circuits for that. Also i'm thinking that  since it supports 16x oversample i could multiplex it into a number of  outs using sample and holds, is this a bad idea?  Also, i'm a  little confused as how to wire the 1861 for voltage out, the only thing  i found on the net was someone hooking up Iout to SJ and RF to Vout and  then tie both together with a cap of mysterious value.
  
  any thoughts appreciated
  
  Karl
  
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