What DAC upgrade made you say “DAMN, that sounds SO MUCH better than my last DAC”?

Each step in my audio journey has seemed to be a great improvement...from my Marantz receiver to a Wyred for Sound DAC, then to a BMC DAC/Pre, then to my current Bricasti M1 Limited Gold. 

Helping along the way were changes in the source as well. From a Marantz CD player, to a BMC BDCD, to a Laufer Teknik Memory Player (first a 16 core, then a 32 core, and having a 64 core built currently).

I think you have to be aware that some DACs could give you that WOW upgrade based on the fact they may have better re-clockers compensating for a budget-ish transport (assuming that is the case in some circumstances).

If you already have a fantastic transport the differences in some DACs is less to do with re-clocking and more focused on the DAC engineering itself.
An example perhaps would be the Audio Note DACs - Audio Notes shun complexity expecting your Transport to be up to scratch - an AN DAC improves significantly with the right transport on the shelf. But if you put an AN DAC on the end of a lesser transport - you are not getting the best out of it.

Another vote for multibit dacs.   Very analog sounding. 

Never.....

What DAC upgrade made you say “DAMN, that sounds SO MUCH better than my last DAC”?

No DAC is worth using swear words over. Jesus saves!!!!!!!!!!