From pass xa25 to krell k-300i

How about some context? Like what speakers, in how big of a room and what kind of music do you listen to at what level. That would be helpful.

No big room, I don’t Need Power. I’ m using tannoy cheviot and Graham LS3/5.

All kind of music. I look to resolution and detail with good recordings and on the human voice and instruments.

What preamp, source and cables are you using (power, speaker, interconnects)

I had a Pass XA 25 and replaced it with a pair of AGD amps (GaN based class D). Backert Labs pre and Fyne F1-8 speakers. The AGDs did exactly what you are asking for. Smooth, detailed, dynamic, slightly warm, and very natural sounding.

 I believe JA, at Stereophile, got more like 80 wpc from the XA 25. So not quite the power deficit advertised, relative to the Krell.