I own de Capos and, while I'm sure they're fine with ss electronics, their reason d'etre is that they are uniquely well suited for tubes. These speakers employ a very simple (almost no) crossover network. Most crossovers cause a spike (or dip) in impedance (as well as many phase related issues). Hence, the de Capo's minimal crossover network creates an unusually flat impedance curve. With tube amps, which are particularly sensitive to loudspeaker load, you're listening to a combination of the speaker's frequency response and its impedance curve, Therefore, the de Capo will make most tube amps sound unusually neutral. Depending on your taste, this phenomenon should be understood FOR BETTER OR WORSE.
