The James M1000 mono subwoofer amplifier is a 2U, high efficiency, class D design producing over 1000W of RMS power into both 4 ohm AND 70 volt loads. The M1000 is a hybrid design with an internal linear power supply to provide large reserve current to the class D output stage, ensuring powerful dynamics and tight bass response. A full feature DSP front end can be configured via the 5-button controller and 2-line display on the front panel. Firmware updates can be uploaded via the USB connector.