I'm a bit confused also. What is wrong with the SF amp? That is a sweet amp. Are you looking for more power? I believe you will need to up the ante considerably to best it, especially for new prices. I love VTL amps, but there again unless you go monoblocks, I'm not sure of a truly palpable improvement.
Perhaps if you are looking for more grunt, then a SS amp such as Odyssey would do you well matched with the VTL preamp.
Perhaps if you are looking for more grunt, then a SS amp such as Odyssey would do you well matched with the VTL preamp.