Even as the gulf narrows between the sounds of the best solid-state and the best tubed amplifiers, most listeners remain staunch members of one or the other camp. Similarly, when it comes to video displays, the plasma and liquid-crystal technologies each has its partisans, though that conflict's intensity is relatively mild, perhaps because video performance, unlike audio, is based on a mastering standard that establishes color temperature, gray-scale tracking, color points, and the like (I'm deeply in the plasma camp). But in audio, the "standard" is whatever monitoring loudspeaker and sonic balance the mastering engineer prefers, which makes somewhat questionable the pursuit of "sonic accuracy." Still, in a power amplifier, a relative lack of coloration is preferable to amps that Stereophile editor John Atkinson has characterized as "tone controls"—usually, if not exclusively, of the tubed variety.

The door to a professional reviewer's listening room is one that revolves: As one product leaves, another enters. After a while, it becomes difficult to remember exactly when you auditioned any specific component. But some products stick in your memory—you fondly remember the time you spent with them, and wish they hadn't departed quite so quickly. With loudspeakers, I recall a few such: Revel's Ultima Salon2 ($22,000, footnote 1), MBL's 111B ($17,000), Dynaudio's Confidence C4 ($16,000), Sonus Faber's Amati Futura ($36,000), Vivid's B1 ($14,990), TAD's Compact Reference CR1 ($40,600 with stands), and even the much less expensive Harbeth P3ESR ($2195–$2395) and KEF LS50 ($1500). Among the most recently reviewed of those fondly remembered speakers is Sony's SS-AR2ES ($20,000).