Help me make sense of a listening test on Reddit 2019-08-17 18:16:00 I'm reading this post on reddit out of curiosity;https://old.reddit.com/r/headphones/comments/c4ze3g/testing_to_see_if_tidal_uses_dspalters_their/The quick summary goes as follows:1. Posted claims he can hear a different with Tidal streaming through an app called roon, vs Tidal streaming through it's native app.2. When he captures the output of both apps using Audacity and then uses an audio DIFF tool to do a null test, the captures show as identical.3. When he runs the same two streams through an audio interface and then captures that and does same DIFF, they are not identical.I'm not trying to put the person on the spot, or prove them right or wrong. I'm just trying to wrap my head around what they did in this test, and if their test method is sound or if there is something more that needs to be done or something that needs to be modified in the testing.This is an exercise in expanding my knowledge of listening tests.