Hi, I have the Bryston 4B-SST2 and BP-26 plus the phon 1.5 setup.
I use Pangea power cords. They are a very good value, (low priced too) and the (only) place that sells them does have a thirty day 100% refund. Audio Advisor. (Be aware the thirty day is firm, no exceptions after thirty days from purchase date)
But they are a very good cord. You may notice better bass straight up. One thing, get at least a 1+1/2 meter or two meter if buying the '9' size cord, as it is stiff torsionally, and the shorter ones can be hard to rotate the connectors to stay in the A/C receptical on the one meter or 0.6 meter cords.(if they happen to not line up naturally)
So the 9 for the amp. and some 14SE for the pre and other stuff (if you go for several). I love them.