  We construct the holographic model of an $S^\pm$ multiband superconductor.
This system is a candidate to explain the anomalous features of the iron-based
superconductors (e.g. LaFeAsO, BFe2As2, and other pnictides and arsenides). We
study the framework, which allows formation of the sign-interchanging order
parameter. We also calculate the electric AC conductivity and study its
features, related to the interband interaction.
