For sale is a used k&k golden Trinity pickup system. This includes the bassmax pickup and a condenser mic that goes into a preamp that offers EQ and gain parameters for the bassmax and mic separately, along with individual control knobs for the volume of each while playing. They are all in great condition. They have some cracking and scuffs on the rubber, but this in no way effects the sound. I found the bassmax pizz pickup gives a nice thick sound while the mic adds some natural tone and some smooth low end. Feel free to pm me with questions. Thanks!