I currently use arcam c31 pre amp into 2 arcam p1 with acoustic zen and heimdall cables for interconnects. I use dynaudio 72se floorstanders with chord oddy 4 into 2. [250 w into 4 ohms] Would it be an upgrade in sound quality to move to a krell integrated 400xi . this gives out 400 watts into 4 ohms and obviously is much higher end than arcam but it is integrated as opposed to pre/power? I was interested in reducing my box count but not if it is no improvement.