i agree the peachtree is clearly the weak link, and also agree you want the amp to bring some warmth to the music, as the benchmark gear is somewhat lean and precise sounding -- fritz speakers appreciate some midrange warmth in the signal to do their magic with vocals etc in the essential midband
i strongly recommend a pass xa30.5 to save considerable $$ over the xa30.8 driving the fritz’s at their efficiency -- luscious sounding amps, neither amp will ever break a sweat, run outside their class a envelopes ... you will save $ on your ongoing power bill too :)
presently i have two xa30.5’s (acquired for a cool biamping experiment), am happy to part with one (if your location and budget makes it practical) ... feel free to pm me