Pass XA versus Krell FPB Amps

I wonder if anyone has had the pleasure of hearing these two style amps and what comparisons can be drawn? I have heard the XA30.5 and absolutely loved it. The only problem was that it was not able to drive speakers that need a lot more power.....

I have heard the Krells many years ago and absolutely loved their iron fisted bass, but cannot remember their midrange texture. The question is, do the Krell Class A amps come anywhere close to the Pass XA amps in terms of the midrange texture, detail, body, musicality and organic feel? With the XA series I feel like I can actually hear more textures, tones and flavors in the sound than any other amp I have heard. Is this a hallmark of Class A amps and would the Krells provide this with just more power so I can use any speaker? Thanks all