I recently purchased a Denafrips Pontus R2R external DAC that I'm very pleased with. A bargain, I feel, at about $1800 US Dollars. My thoughts are posted on their website:
https://www.denafrips.com/single-post/2018/12/10/Pontus-DAC-New-York
There's also a more in-depth Positive Feedback review at:
https://positive-feedback.com/reviews/hardware-reviews/denafrips-pontus-dac/
Cheers - Michael
https://www.denafrips.com/single-post/2018/12/10/Pontus-DAC-New-York
There's also a more in-depth Positive Feedback review at:
https://positive-feedback.com/reviews/hardware-reviews/denafrips-pontus-dac/
Cheers - Michael