I am not familiar with Classe's products. I love my SF line 3. I never think that I am missing anything when I listen to it. The price is also great. I use it along with a Krell KSA 200S to drive a pair of Ohm Walsh 300's. I am curious as to how it stacks up against a good SS unit as I have no experience with SS preamps.
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.