I don't think the Ref 150 is easily replaced by ss. The only one in a sane price range that I have heard and believe would give it a run is the Wells Innamorata. I have heard this amp in 2 settings and was very very impressed but have not done an AB comparison.
I once did an in home audition of the Dag stereo amp which bettered the Ref 150 in some respects but not others. That is how strong the Ref150 is. And that was not even the SE version. BTW--- I loved the Dag too.
I once did an in home audition of the Dag stereo amp which bettered the Ref 150 in some respects but not others. That is how strong the Ref150 is. And that was not even the SE version. BTW--- I loved the Dag too.