Reason For That Reply
Gear_Junky:
"Well, both channels use the same single tube..."
Well my DaviSound TB-3 does just that. From that link:
"We have done several UNIQUE things, circuit-wise, to give tube-lovers their "warmth". Our unusual technique employs just a single triode stage, one half of a 7025 (12AX7) per channel. This is the ubiquitous dual triode tube from days of old prefered for it's low noise and stability in low level applications.
Our manipulative circuit techniques force the tube into early overload with resulting asymetrical signal swing thus generating more of the desired EVEN-ORDER harmonics early on. Furthermore, our manipulations actually SUPPRESS the "nasty" odd-order harmonics ( those that are most audible, non-musical and, thereby, distasteful to the human ear). The result is a "silky, sweetness" which enhances the music signal through harmonic colorations. The processor, as it is gradually overdriven, actually behaves like a musical instrument generating warm, musical overtones which are FREQUENCY INDEPENDENT (unlike digital synthesis) throughout the entire audio spectrum!"