Omega Mikro 12' Planar Active II $585.00 I'll pay shipping. If you are familiar with Mapleshade cables OM is the big brother company. These are about 10years old but function as new. you will need standard 9 volt batteries for the boxes. The II comes with two battery/network boxes, one for each channel . These boxes contain RF filters and batteries to bias the mesh and to filter out radio frequency interference. Batteries will last their normal shelf life since they produce no power but rather provide a fixed bias for the mesh. Negotiable but don't lowball me.