$30K DAC in a $70K system - wise or ridiculous?

I have a feeling those saying hell no way in hell is a DAC worth 30K haven't lived with one in their system.  If you can't afford it then so be it.  I have been in audio for 20 years and have only gone to about 10K on a CD player or DAC.  I recently got my hands on the DCS Rossini DAC and clock.  I hate to say it but you guys don't know what you are missing.  Don't knock it till you try it.  I have done hundreds of upgrades, speakers, amps, cables you name it.  This thing rocked my world.  

If the OP really has a $70k system and is on HERE seeking input on $30k DACs, then he really deserves the uncertainty of an internet-based purchase decision.

will never begrudge anyone with the means to buy such folly, but will throw a dart here and there at those who have the means but lack the IQ to know what they seek.

$5k on a DAC should do it, mate....that’s MY guess...;-)

One thing I'd recommend you consider would be to snag a really good power regenerator.

When PS Audio released their P15 unit, I upgraded from my then-current P10 model and immediately noticed significant improvements in the bass, the soundstage and the clarity in the mids to highs, on both my PS Audio DirectStream DAC and my Mytek Brooklyn DAC.

As to your idea of spending on improvements nearer to the source, I'm in agreement with that concept.

Rotel?!!!  April 1st is next year. 

I humbly suggest the OP also consider installing something like a Goal Zero Yeti lithium-ion battery generator as his power source. In my system such a device lowered my noise floor (I didn't even consider that I had a "noise floor" in my system, but once it's gone you can't un-hear it...). This would be (IMHO of course) appropriate cornerstone for any unleashing the true capabilities of the current system and any future upgrades.