This product is simply magical, touch front façade provides fingertip control in one direction or the other for volume, bass, treble and just awful little thing that g discovered by turning the touch wheel made a quarter turn and remained supported the volume or low or acute bends down very quickly, practical enough has the equivalent of rotating knob of other model! also noted the outline on transparent plexiglass enclosure and subwoofer box with lighting only a blue LED light to red and purple Volume for acute low and automatically back on the blue volume (the most used) thereby the adjustment possibility is huge and the volume will surprise you! its spits ...! Briefly pure happiness and quality Trust! I recommend!