Stronger meaning louder bass relative to the midrange and treble? If not louder, then define stronger.
In other words, if a Pass Labs amp produces well-defined, controlled bass in balance with the midrange and treble (which is what I hear from mine), then if the Krell produces bass that's louder than the midrange and treble, you would consider this stronger (and better)?
Just trying to get a handle on what type of bass production you want.