The SST line is in my opinion a better amp than the ST line. Noticeable improvements on the top end.
I have owned 3B-ST, 4B-ST, 7B-SST, and BP-25. I sold all but the 7B-SST. This is my long term keeper.
I have owned 3B-ST, 4B-ST, 7B-SST, and BP-25. I sold all but the 7B-SST. This is my long term keeper.