The problem is what constitutes "jaw dropping"? Having read audio magazines and forums for decades, what it takes to make someone's jaw drop can vary considerably from person to person.
Since you seem to be budget conscious, here are two considerations. The Topping E-30 is quite the buy for $130. You can try one from Amazon and return it for a full refund if your jaw doesn't drop. Next up the line is a Schiit Bifrost for $700 -- it is a full multibit (R2R) DAC. Schiit gives a 2 week trial but does charge 5% if you return it. I have both DACs and the Topping is a great buy at its price but the Bifrost is definitely better in my book. And, there are plenty of other options out there for as much money as you want to throw at the issue.
Since you seem to be budget conscious, here are two considerations. The Topping E-30 is quite the buy for $130. You can try one from Amazon and return it for a full refund if your jaw doesn't drop. Next up the line is a Schiit Bifrost for $700 -- it is a full multibit (R2R) DAC. Schiit gives a 2 week trial but does charge 5% if you return it. I have both DACs and the Topping is a great buy at its price but the Bifrost is definitely better in my book. And, there are plenty of other options out there for as much money as you want to throw at the issue.