I own and use both the original Musical Fidelity and the V3 versions along with a Yaquin single tube version that I picked up in Hong Kong for cheap. I honestly think that they work wonders when used with most inexpensive CD/DVD players adding the depth and harmonics of a tube amp while at the same time eliminating any impedance mismatches between the units connected. It also works quite well with my Precision Fidelity C7a preamp which is essentially a tube phono preamp with a passive line stage so the buffer eliminates any cable length issues. Incidentally the Yaquin/Grant (basically the same unit) is the equal of the 1st generation Musical Fidelity performance wise.
