The following excerpt is from the Gryphon Ethos review,
“From main suite of the movie (starring Keanu Reeves of John Wick movies), “Speed” from Telerc’s ‘The Big Picture’ (Classic Film Music, Craft Recordings/ Concord Music Group Inc. CRO 1525), it was clear that the recommended default Filter 4 did provide a more defined, articulate and dynamism in the lower bass. The tempo of the presentation was faster, thus an added excitement compared to the previous 3 Filters (1, 2 & 3). The Upsampling to 384kHz opened up the soundstage in all 3 dimensions: width, height and depth…especially the deeper depth (in my set up) where I was given better distance, separation and clearer individuality of the drums, and the sensation of higher quantum at the traveling waves of subsonic frequencies”.