Art Dudley has posted a review of the High Fidelity Cables Magnetic Adapters ($299/pair) in his Listening column at Stereophile. His conclusions:
“With the Adapters, the pace was laggy and lackluster, and the reverb-drenched spoken intro sounded desultory and, again, tired; with the Adapters removed, this broadly paced tune was rhythmically more on track, and more purposeful: Les Thompson’s mandolin accents on the downbeats now seemed to push the band in a straight rather than a straggly line.”
You can read the full review here.