System amplifier (class D) with an output power of 4 x 1,000 W RMS into 4 or 8 ohms, A/D converters and integrated DSP processor. Flexible 4 x 4 matrix with 4 inputs and 4 outputs. Power supply via SMPS (Switched Mode Power Supply) with power factor correction (PFC). Heat dissipation by temperature-controlled fans. SpeakONTM speaker connectors. Ethernet connectors to pass AVB audio and for remote control and monitoring. Analog and digital (AES/EBU) audio inputs with links. Front panel user interface with display. DSP provides IIR and FIR filters, delay adjustments, contour filters, and air absorption compensation filters. Protection against thermal overload and over-excursion. Built-in library with factory presets for all manufacturer’s loudspeakers and 10 user memory locations.