The Max 1500 Plus is a 2x 450W @ 4 Ohms power amplifier. Max series amplifiers are reliable, maintenance-free, powerful power amplifiers for live and installation use. All Max amplifiers are equipped with balanced and 1/4″ jack inputs and binding post outputs, the Max 1500 also with a Speakon output. The amplifiers are protected against short circuits, thermal overload, subsonic and RF interference, DC offset, and overheating.