I have own both and auditioned them against one another. Classe CAP80 vs. Sonci Frontiers SFS-80. I have previous owned an SFC-1 sig. integrated tube amp and preferred it over many solid state amps. I was amased that the perforamnce of these two were very close in many aspects. It took concentrated listening to find their differences. That how subtle the differences were. Recently the CAP80 have received favorable resommendation by Stereophile. Either way your the winner!
Classe vs. Sonic Frontiers
I currently own a Classe 5 Pre and power combo. I am wondering if changing the pre to a Sonic Frontiers Line 1 or greater would be a huge improvement. Also would be interested in the phono 1 to replace the internal phono in the Classe. If anyone has experience using Sonic and Classe let me know what your findings are. I am powering Proac speakers with this setup.