Phenomenal speaker but it must have space around it to perform...2 meters or so from back wall and around a meter from sidewalls. Ribbon manufacturere (BGC) recommends a listening distance from the ribbon of 10-15 feet, to allow the sound to integra. Delivers subteranean bass and ribbon midrange and HF to die for; crystal clear and distortion-free. Worth getting the speakers raised on tip-toes or similar outrigger platforms (Genesis' latest speakers come with this enhancement already). Comes with a 800watt per stereo channel (and there are four channels in total - 1600watts!) Class D sub amp so you can drive the mid and top with just about anything, but the ribbons do still like a lot of power - and they are a 4ohm load