both can be used as a one-input stand alone amp or with a preamp (the Clari T can be configured/constructed either way, whereas with the SI you just crank the volume control to maximum). myself i always prefer a high quality preamp for input switching and phono stages, and i suspect that the Clari T will sound it's best with a high-quality pre as well--not to diminish what i'm sure is great sound through a much higher quality volume pot in it's one input version. if you only have one source, then that certainly does change the comparative equation, and not in a small way.
in the process of constructing a much better quality power supply for the SI--a velleman K7203 highly regulated 3 amp PS kit.
in the process of constructing a much better quality power supply for the SI--a velleman K7203 highly regulated 3 amp PS kit.