I read a lot of Posts about better power supplies for this DAC (and DAC in general).
Somebody tried batteries, others switching PS, other linear...
It seems that more than 12 Volt but less than 14 is beneficial, and as more current capability as possible.
Now I tried a linear regulated PS, 5 A, 1-15 Volt. A huge thing.
At 13.5 Volt, the sound was clearly worse! Reduced soundstage, less detail, congestion. Very bad. Checked with Stax electrostatic headphones directly connected to the DAC outputs. I am quite sure of these findings.
On the other hand, it seem to me that this PS is no so different from MAPLIN ones recommended here.
Surely I am missing something.
All opinions are wellcome. Thanks to all