Vandersteen Quatro Wood CT loudspeaker & M5-HPA monoblock power amplifier
"Stirring the stew" is what I've heard it called when a company introduces a new version of a product every three or four years. When a new product is launched, sales generally rise rapidly to a maximum and then slowly decline. If the stew is stirred every few years, plotting the product's sales volume against time results in a sawtooth wave, without sales ever dropping close to zero.