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Downside to R2R Ladder DACs?

A sales person I generally trust told me to steer clear of used R2R DACs, since their reliance on high precision resistors causes them to sound best when new, and degrade fairly quickly. It seems reasonable; have others had any experience with this?
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Showing 3 responses by abraxalito

abraxalito
93 posts
 
Assuming the R2R DACs were built with genuine fine tolerance resistors this is utter nonsense.
abraxalito
93 posts
 
@georgehifi these days I wouldn't use a 'naked' opamp in I/V without prior filtering unless it was a pure video part (AD811 for example).
abraxalito
93 posts
 
@georgehifi Its not a drop-in for normal opamps because its CFB. I get better results using a passive filter before my opamps than I did with AD811 and no filter. AD829 is doing very nicely as I/V for me at present, preceded by a filter.
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