I currently own the Benchmark DAC1 HDR.   I am looking into the Benchmark DAC 2 series and the Woo WDS1.    I like the DAC1, but it is a little sterile sounding to me.    Anybody have any comments on the DAC2 vs the WDS1?   I need the preamp / headphone amp / balanced xlr analogue outputs...

Is it possible to simply swap out the op amps to Muses 01's to upgrade to the 'new' Muses edition?   If so, which op-amps do I replace?  Which sockets?  Do I have to replace ALL op amps to new Muses?  They are pricey!    Thank you.