If you're PrimaLuna, it's the DiaLogue, an integrated tube amp available in two models: the $2199 DiaLogue One and the $2499 DiaLogue Two. Both amps deliver 21Wpc in triode operation and 30Wpc in ultralinear mode. What's the difference? The Two comes with Genalux KT88s, Solen capacitors, fast recovery diodes in the power supply, and a high-gloss hand-rubbed finish.