Darrell - Krell KAV-400xi has a strongly compromised power supply (750VA transformer - while proclaming 400Wpc/4ohms) and cooling devices...
Take a look the John Atkinson's measurments in Stereophile...
http://stereophile.com/integratedamps/205krell/index4.html
It seems quite poorly designed integrated.
Soundwise, I've been present at session where old Sansui Alpha 707 clearly overperformed the KAV-400xi (Dynaudio Contour 1.3Mk2 speakers, Rotel RCD-971 CDP).
As for a weight, I would always prefere 32 kilos and 100Wpc versus 16 kilos and 200Wpc. Matter of philosophy... In this particular case, lack of KAV-400xi weight indicates at least two facts, already mentioned: smallish transformer and undersized cooling devices...
Take a look the John Atkinson's measurments in Stereophile...
http://stereophile.com/integratedamps/205krell/index4.html
It seems quite poorly designed integrated.
Soundwise, I've been present at session where old Sansui Alpha 707 clearly overperformed the KAV-400xi (Dynaudio Contour 1.3Mk2 speakers, Rotel RCD-971 CDP).
As for a weight, I would always prefere 32 kilos and 100Wpc versus 16 kilos and 200Wpc. Matter of philosophy... In this particular case, lack of KAV-400xi weight indicates at least two facts, already mentioned: smallish transformer and undersized cooling devices...