The LD Systems XS 400 is a very compact and reliable Class D amplifier with a power output of 200 W per channel into 4 ohms and 400 W into 8 ohms in bridged mode, and a frequency response of 20 Hz to 20 kHz. Our Class D amplifiers deliver high performance effectively in even the tightest spaces, without excessive power loss. Weighing just 3.4 kg and measuring only 1U in rack height, the XS400 is ideal for all types of applications where easy transport and space savings are important, whether in mobile or permanent installations. The XS400 features short-circuit, DC level, overheating, and overload protection circuits, as well as a delayed power-on circuit. It is equipped with XLR, RCA, and jack connectors for the inputs, and Speakon-compatible connectors and binding posts for the outputs. The rear panel features controls for selecting the operating mode, gain, limiter, and Ground-Lift function. The front panel LEDs indicate power, signal presence, clipping, protection circuit activation, and operating mode. The XS400's transparent sound is characterized by a wide dynamic range and faithful impulse response.