You can make those jumper pins yourself. Just grab some solid-core copper cables and cut a piece, strip any outer jacket, and bend it into an "U" shape. When my house was under remodel, I found tons of 12 gauge ground wires that my contractor was throwing away, so I just pick them up to be used for situations like this.
Pass amps have one of the best bass control, or I should say most realistic bass rendition, I've heard.
I am using a BMI Orca II Limited Ed. powercord. My buddy also uses one of the Shunyata snakes on his with a pair of Dynaudio C4s. It took him a long time to get the bass dialed in. But they sound incredible right now.
FrankC