"MG series mixers are lightweight, portable designs. C models feature simple one-knob compression controls on key channels to achieve great vocal sounds. Other features include 3-band EQ, 4 stereo inputs, 3 aux sends, illuminated channel On switches, phantom power, external power supply, inserts, and more. Versatile Connectivity and Pro-class Connectors Top-mounted input and output connectors make setting up and re-patching your system quick and easy. All models feature high-quality Neutrik™ balanced XLR connectors on mono microphone\/line channels and XLR-equipped stereo channels. These professional-class connectors were subjected to extensive testing by the Yamaha design team, and were chosen for the MG mixers for their superior reliability and sonic qualities. The XLR-equipped stereo channels can accept mono microphone input either via the XLR or phone jack connectors. The remaining stereo channels provide phone jack and pin jack connectors for compatibility with a wide range of sources. Mono input channels also feature insert I\/O connectors that let you patch external signal processing gear into those channels as required. Separate pinjack 2TR inputs are provided to accept the output from a CD player or similar stereo source. Built-in Channel Compressors This advanced feature can be a tremendous advantage in achieving great vocal sound, as well as to refine the sound of bass, guitar, and other sources. You won't find built-in channel compression on too many other mixers in this class, but in the new MG mixers you have Yamaha's innovative one-knob compression feature on several of the mono input channels. Conventional audio compressors with their threshold, ratio, knee, makeup gain and other controls can be complex and timeconsuming to set appropriately for a given source. Yamaha's one-knob compressor eliminates the need for an engineering degree with a single control that lets you simply dial in the amount of compression you want. High-performance Microphone Preamplifiers with Switchable Phantom Power Microphone preamplifiers are critical in any mixer, and a performance bottleneck in many. That's why pros often spend thousands of dollars on just a single channel of microphone pre-amplification. The microphone preamps built into the MG mixers inherit technology from Yamaha's top-line professional consoles, and have been painstakingly designed to deliver superior sonic performance with any dynamic or condenser microphone. Gain trim covers a wide - 60dB ~ -16dB range for microphones (-34dB ~ +10dB for line input), so you'll be able to achieve optimum level matching with just about any source. All microphone preamps also feature switchable phantom power so you can take advantage of the natural, extended response of high-quality condenser microphones. 3-band Channel EQ and High-pass Filters Building a truly useful, musical-sounding channel equalizer is no easy task, but Yamaha has decades of experience in building pro consoles to draw on. You reap the benefits in the MG series mixers: all mono channels feature 3-band equalizers with LOW, MID, and HIGH controls. Depending on the model some of all of the stereo channels have 2-band EQ for smooth equalization of stereo sources. Although not directly related to the equalizer circuitry, all inputs also feature 80 Hz low-pass filters that can be used to eliminate subsonic noise that is outside the equalizers' range. Bright Meters for Visual Level Monitoring Accurate visual level monitoring can help you achieve maximum signal-to-noise ratio without distortion. The MG mixer's bright, easy-to-read multi-segment LED meters make it easy to control system levels for optimum overall performance. Easy Operation All switches, controls, and displays have been designed and laid out for intuitive access and smooth, reliable operation with positive tactile and visual feedback."