I too have had good results by using a tubed pre and a solid state amp,if used with the right cables! The S.F.Line2 sounds very good with my Krell KSA-150 With the right cables between them but can sound harsh with the wrong ones in there. As someone mentioned earlier the speakers may dictate what combo you may wish to go for.....If you have a speaker that you already like look at it's requirements and work backwards from there.