Here are a couple of measurements of 5K compared to BTR5. They are measured using a balanced connection to MOTU M4, using the maximum volume on the DAC and adjusting the input gain to a reasonable level. DACs are feeded though USB, and the pin 1 of MOTU M4 is tied to the USB ground.
The first measurement uses the high gain of 5K. This results in a SINAD of 87, a bit better than Amir's measurement, which used unbalanced. The noise level of 5K fluctuated a lot: for a moment it could be an order of magnitude higher, and a bit later significantly lower. So I had to enable averaging to get a consistent result.
The graph switched to low gain, which improves the numbers a bit: SINAD 93.
Finally, this measures BTR5. Its noise level was significantly more consistent compared to 5K. Its SINAD was 97.
So, it seems that as a DAC, BTR5 is a bit better.
The first measurement uses the high gain of 5K. This results in a SINAD of 87, a bit better than Amir's measurement, which used unbalanced. The noise level of 5K fluctuated a lot: for a moment it could be an order of magnitude higher, and a bit later significantly lower. So I had to enable averaging to get a consistent result.
The graph switched to low gain, which improves the numbers a bit: SINAD 93.
Finally, this measures BTR5. Its noise level was significantly more consistent compared to 5K. Its SINAD was 97.
So, it seems that as a DAC, BTR5 is a bit better.