Krell Duo 300 compared to Evo 302e or 402e?

Coinguy37, I apologize on behalf of the Community here for Dave b's remark's,,, you are no troll,  you actually told the truth,  krell has been selling directly for atleast the last 3 years I know of,  however,  they will not sale direct if you have a krell dealer in your area that you live. 

Audiolabyrinth..hello....it's been over year,,just curious..have u acquired The Dan D Agostino amp?  What is your impression?  I am putting together a system. Leaning towards Krell

Guys I have a small room question can you hear the fans if you are sitting 9 ft away? How does the sound compare to say Pass or Mark Levinson,  Luxman! 

I am considering going to Krell Evo402e from Pass Labs X350.5. Is this Krell a good amp. I thought it might be a great amp but reading this folks call it harsh - I don't need a real warm amp like the pass but don't want a harsh one with. The Krell is more money. It is for Magico S5 speakers, Bricasti M1SE Dac, Simaudio Evo P-8 pre and Kubala-Sosna Emotion cable loom. 

Would love any info on the Krell Evo402e

In my opinion and defining terms (for purposes of comparison only) , your Pass Labs X350 has a very neutral sound.  It is definitely high resolution, but very neutral and very controlled.  Best I can explain it is that the Pass "Class AB" amps have a "very controlled sound" - in that the dynamics seem to be limited or "held in" in some way.  Don't get me wrong - this amp sounds wonderful to a lot of people, but it does not have a lot of slam/dynamics in the mids and midbass.  I would not really call the Pass X350 a "warm" amp.  I think it is rather "neutral".  It's definitely not warm like a Parasound amp would be, or an older NAD amp.  The Pass Labs full Class A "XA" series amps are not really that warm either in my opinion.  They have a thicker midrange, but still pretty good resolution.  However, it's definitely a different sound

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The Krell Evo402e is a conventional "Class AB" amp that is very high resolution and has a lot of dynamics, resolution, attack and excitement.  This is definitely NOT a warm sounding amp.  My friend has one and I have heard it directly.  I would say the Evo is an awsome amp, but due to its very high resolution character, it can easily become out of control if you have something like metal dome tweeters or silver elements in your cabling.  This is where many can say this amp sounds harsh (but it's really not the amp sounding harsh - it's that the amp is very revealing and the synergy with silver is causing the sound to be too fast/bright).  So, you need to pay attention when matching components with this amp.  Stay to pure copper and gold-plated or rhodium-plated connectors for all wiring (speaker cable / interconnects / power cords).  The perceived "harshness" is something you'll have to deal with when choosing any amp that is not "warm".  The Classe "Class AB" amps are another example of this.
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The newer Krell amps (Solo / Duo / Chorus) are all full biased "Class A" (even though they have a sliding bias circuit).  These have the typical very liquidy and smoothed over "Class A" sound, maybe even lush sounding (but not as lush as some other amps).  The liquidy and smooth character of these amps is definitely more forgiving for "harshness in a system" and still has good dynamics and resolution, but the sound is also less "natural" and less "real" with regard to the instruments and vocals.  You would have hear this character to know what I mean.
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In my opinion, the Krell EVO and Classe "Class AB" amps are the most real sounding of the above, but also need careful matching with other components and wiring.