Upsampling MQA files to original resolution with sox

[Alandbush]

(13-05-2020 18:02)granosalis Wrote:  Is it possible to pass the -vsM option to sox lib in order to enable the minimal linear phase upsampling?

Ciao,
Giuseppe

Given that you have only a few MQA cds, it may be easier/quicker to generate an upsampled version of them yourself, directly using Sox.
You then have the ability to compare the before and after to determine if you hear a difference.