GoldenSound measured the Bartok.At least the YouTube title says it is the dCS Vivaldi, which is the TOTL and costs about 50k, so it would be interesting in it´s own and the most expensive DAC ever measured by Amir AFAIK. But my guess is still that a $100 Topping DAC does not score worse.
There's also an ASR thread discussing those measurements. The thread also has links to Stereophile's measurements of it.
Stereophile measured the OG Vivaldi in 2014 and the Vivaldi Apex in 2023.