The RockBoard Polarity Reverser Flat Power Cables are high-quality power supply cables for effects pedals and were developed, based on their Flat Patch Cables. Their super compact plugs are smaller than those of most other power cables on the market. This way they save valuable pedal board space as well as potrusions over the pedalboard's edge. Other than most commonly available power cables, Rockboard Flat Power Cables do not use two parallel cable lines, but use the same design as instrument cables with a central wire surrounded by a shielding layer. This effectively prevents electrical interference into the audio signal.