The Radial JX44 is a combination guitar input selector, signal distribution amplifier, effects router, direct box and Reamper. With so many ins and outs, it is somewhat difficult to break down the specifications as each of these functions serve a purpose on their own. Given the fact that the JX44 combines 5 devices at once, for the live touring tech the single most significant spec may well be noise. The JX44 does an exemplary job at keeping noise levels down.