Sure. The f7 was wonderful sounding, warm and much better than the Amp camp amps and the Schiit Aegir. Better in clarity, tone and soundstage. I heard the diff as soon as I turned it on.
The xa25 is so much faster, clearer/transparent and powerful. It was much more resolving, and the tone and timbre was so perfect. I love that amp and will likely buy a used one at sometime in the future. Sound is amazing and no complaints. The heat is an issue. I went with SPL S1200 power amp which has all the characteristics of the XA25 but runs cool and has a lot more power.
It is a lot more money though. If heat isn't an issue I recommend the xa25. It is am amazing amp.