Krell Evolution or Pass XA.5 series


Anyone compare the Krell Evolution to the Pass XA series (all prices being equal) on medium efficiency speakers (89-93db). Curious if you did compare them what was the circumstances and system. I did read in one magazine the XA has a warmer midbass, while the Krell Evolution has better bass. I just want a little more information than that.
dgad
... while the Krell Evolution has better bass.
Dgad (System | Threads | Answers)

Would you define "better bass"?
It was a short blurb. I guess stronger bass would be more correct. I am curious about other peoples experiences. As I have only heard them at shows.
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.
Tvad,

I am just trying to remember what I read. Not sure exactly what they meant. I would love to get some input from others if they have compared the Evolution Series to the Pass XA series. I wouldn't ask if I have. I have heard the Evolution in unfamiliar systems. One time it sounded incredible, a 2nd time very good & a 3rd time poor. Pass XA series I have not heard, but I have heard X series and thought it not special.
Good bass, controlled bass. Micro and macro dynamics. The talk of highten bass towards mid and highs. Nah, forget that. That is simply a user, using speakers that are not suited for the room. The Krell amps drive the bassdrivers in a manner most would only dream of. There are many amp-makers that talk of the evolution of their brand. I have used Krell and many more, back in the days and heard Pass Labs. I would go for Krell. There are many krell-dislikers. Don't care about them. Of all the amps i've heard, older Krell amps simply rules in some specific key areas. The later amps are statement amps. The EVO amps are superb. I would not trade them if i had them.
Just listening to a good, or bad recording will reveal absolute inner detail in the bass area (hear they are true ref amps) . Most other amps will not do that. Also, the Krell amps are completely silent, no hum or background noise at all (no bass bloom either). Pass Labs, with all respect, i would listen myself. If i could not do that, i would go Krell because you will not go wrong with those amps you talk of. What is a thing to learn about the Krell is that they will not make bloom as with Pass. It is simply a manner of how you would like it. If you use speakers that has a tendency to sound cold or harsch you might like bloomy sound. But the later Krells are not cold or harsch at all. The c series and older could be hard in tone, but not from cx and forward. I firmy believe, if you have not used a Krell amp of that magnitude, you are in for a serious experience that is only possitive.
I seriously hope you see to it that you demop a EVO amp, you will be hooked directly.