That was quite an entertaining review all-in-all and some informative parts...I'm not convinced by his subjective listening tests and his descriptions of the sonic effect of the different filters in terms of his listening experience, but that's the nature of subjective tests....I do think he was over-egging the significance of the filter . Having said that I have done something similar by going through the different filters in my G6 DAC and I did notice only a very subtle change, and I chose the one I liked best "Fast Roll Off, Linear Phase", so I can't discount his listening tests, but at the same time I can't put any weight on them....as he said though test them yourself and see which one you like best. I'm sure some people think that the filters don't have any discernible effect on the audible music.