Well, I went to the music store to check out the Ampeg B100R today. It is a fabulous amp, very smooth, with a great low end, and a nice clarity. But why get an amp that emulates a B15 when you can get a B15!! Thats right, I found one! It is a 1969 B15N(Thiele design cabinet). The amp, as you can see is in great condition physically. The speaker is good, though I would like to replace it with an Eminence Delta 15. The only thing I can think of to replace would be the filter caps(it is humming). I replaced the power tubes with new Svetlana 6L6's. I love it! It is one of the best amps I have ever played! It is smooth and warm. It makes all of my basses sound so good! The amp is incredibly versatile too. I can get a decent slap tone out of it with the Fodera, and beautiful harmonics. When I run the head through my Goliath III cabinet, I can get a sick amount of low end! It is so smooth and pure sounding. I've got to go practice!