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Old 8th June 2003
  #16
Here for the gear
 
PLL's

As far as I've seen very few DACs actually use this technique. The fact that Benchmarks sort of explicitly markets this approach might accentuate that but well.
Most DAC's in fact use PLL's , which can vary greatly in quality and performance (one out of many factors making a difference between different products) that reduce jitter.
Maybe you are referring to the oversampling DAC chips which indeed are commonly used, the reasons for using that are not primarily jitterreduction and are in the realm of people who design the converter chips. The reason for this in fact is because a digital reconstruction filter is much easier to do than a brickwall analogue one.

Cheers KV