The Wilson Audio Specialties Alexandra XLF costs $200,000/pair. So does a Ferrari. Perhaps if Wilson Audio Specialties sold as many pairs of XLFs as Ferrari sells cars, the price might drop. For now, $200,000 is what you pay.

Can a loudspeaker possibly be worth that much? Add $10,000 for speaker cables, and that's what I paid for my first home in 1992. Today, the average American home costs around $272,000, which is likely less than the cost of an audio system built around a pair of Alexandra XLFs.

Most reviews are straightforward. One preamplifier or power amplifier replaces another. DACs are swapped out. A new pair of speakers takes up residence in the listening room.

But some products demand a complete revision of a system's architecture. Such was the case with Devialet's D-Premier ($15,995). Not only is this French product an integrated amplifier, with phono and line analog inputs; it has digital inputs and an internal D/A section.