The smoothest amp you've heard?

a tie between a class-A tube amp whose name escapes me [this was back in 2000], and a rega brio 3 which was the most mellow-sounding transistor amp i've ever heard. if i had a big enough space, i'd enjoy listening to music with that amp and a pair of Vandy 1Ci speakers, as i heard in the showroom a few years back. 

Belles Aria $2200 70 watt integrated....Lucious

Threshold SA2

Very good explanation atmasphere.

When I hear the term smooth I want to scream! I don't understand what smooth even means? Maybe because I'm a winemaker and "smooth" in the wine world is a term used when not being able to evaluate complexity. Like wine when listening it can also be a complex experience. Smooth can be construed as a number of sonic observations. Its non specific. The term Smooth sounds boring. I'm using a Gryphon Mephisto, "smooth" doesn't come to mind. Many other attributes do.