Yamaha EMX512SC 8-Channel Powered Mixer Yamaha EMX512SC 8-Channel Powered Mixer Specifications: 17-3/8"W x 11-1/4"H x 10-3/4"D 22 lbs. Yamaha EMX512SC 8-Channel Powered Mixer Features: Dual 500W amps Power mode switch allows amps to function in stereo, or as separate mono channels for mains and monitors 16 SPX digital effects including reverb, echo, chorus, flanger, phaser, and distortion FCL (F..