I have been listening to the Vision DAC from my Vision DAC/Preamp with an interconnect between the Vision DAC/Preamp's tape out and one of the T8 preamp's inputs. The Vision DAC is very quiet. The clarity is outstanding. The low end is very powerful and well defined. I have also briefly compared the Vision DAC to the T8 DAC. The Vision DAC is quieter (blacker) than the T8 DAC, even with the 6CG7 tubes. The T8 DAC has good low end, but the Vision DAC's is flatter, deeper, and better defined. The Vision DAC also seems to have better high end extension. The T8 DAC with the Mazda 6CG7 tubes seems to roll off the high end. The T8 DAC produces more pronounced and extended sound with brushes on snares and cymbals and growly voices are more growly. I don't know why the T8 DAC appears to have those different characteristics, however, but I like a lot of growl in my growly, and I am not yet ready to take the T8 out of the mix. Choices, choices (and I am grateful to have them).