I also only get 48kbs with my $3000 DAC, but it is because I do not have a MQA DAC. You do not get more than 48kbs, if you do not have a MQA DAC, which will be able to unlock the full master quality: 96 kHz - 192 kHz / 24 bit TIDAL writes:
What is the difference between HiFi quality and Master quality?
HiFi audio is a superior sound but is still limited in its resolution—44.1 kHz /16 bit.
TIDAL has partnered with MQA to deliver something infinitely better: an authenticated and unbroken version (typically 96 kHz / 24 bit) with the highest possible resolution—as flawless as it sounded in the mastering suite. And exactly as the artist intended it to sound. https://support.tidal.com/hc/en-us/articles/115000397069?input_string=tidal%3A+i+am+only+getting+48kbs+when+i+use+to+get+192kbs.