Well the AUX1111 takes the recorded musicout of the disk and places it in a natural environement. The sound has full body and warmth like natural sound.
If you're used to low-budget equipment, the step would be quite big, so best to keep in mind an amplifier of this grade demands a set of equally good speakers and has to be matched with a quality source to do it justice.
If music is 1 of the most important things to you, and are ready to invest in good speakers aswell (if you haven't yet), then I'd say go for it!!!
The AUX1111 is rated 110 WPC into 8 ohms.
I don't know what the technology behind it is, as literature for it seems non-existant.
Sometimes I feel like the soly person in the planet in possession of this particular Sansui!
I'm not familiar with tube amplifiers, but If you like their sound, the later solid state Sansuis are complimented to closely their sound charachteristic, to the point to sound identical, in the case of the AU-ALPHA907MR .
I'd suggest you, if you didn't already, to carefully read the following site:
www.sansui.us
A passionate Japanese author, committed to pinpoint the rest of the world the way Sansui kept their pride up high producing the best equipment possible at the most struggling times causing tremendous loss but how they still succeeded in the quest for their ultimate amplifier. Beautifull!