P1s1, thx for your input. You addressed the loudness point of perspective, which makes sense, rather not to have another CA-400, since in my room , at near field listening I rarely listened to beyond 100 db(clean sounding at that), where sound stage depth and imaging suffers. Although some of the demage is caused , no doubt, by my average size L -shaped room,adding Comfortable head room by going monoblocks and tripling of maxpower, is there any gain to be had in soundstage and imaging ? Sorry snook2 to use your forum to solve my problem. This is the last question, I promise.