US billionaire Warren Buffett likes to note how little advantage his considerable wealth secures him over the average person. . . All the other luxuries out in the world are valueless to Mr. Buffett, but I would venture to suggest one that he might be interested in: the $130,000 MSB Select DAC and headphone amplifier combo, the world’s most expensive headphone system. . . there’s a degree of advanced engineering that means spending ridiculous sums of money gets you ridiculous performance in return. My experience of listening to the MSB Select setup at CanJam London this weekend just reaffirmed that belief.