I have a local guy/tech who has a beautiful Sansui AU-20000. I recently acquired a pair of 4333A'a and wondered how this combo would work. The amp, which he is doing all of the "upgrades", would need a deposit and the balance when finished. Not exactly a cheap date, so I would like to know if this amp is worth the $1K that he is asking. My little Sansui 890 (80wpc) is not doing big speakers their due justice.