The MSR400’s authoritative sound and refined appearance give it both brawn and beauty, making it a great choice for a wide array of performing and live-sound situations. The MSR400 employs a two-way bi-amplified system that delivers a total of 400 watts to the 12-inch cone type woofer and the 1.75-inch high-frequency horn driver. In addition to the green LED that lights when the power is turned on, there’s a peak LED that lights red when an input overload occurs. This provides a visual indication of excessive input, allowing you to adjust the input level appropriately. Inputs for a Variety of Sources: The MSR400 provides three input connectors; male and female XLR type connectors and a phone jack. All inputs are balanced and connected in parallel. The input level range is from -36 dB to +4 dB, allowing the MSR400 to accept output from your mixer as well as other sources such as microphones, synthesizers, or other electronic musical instrument. The control section includes input level adjustment and a two-band equalizer so you can make fine adjustments for optimum matching with your input source.