Answer by  
                                                                                          djleo666 (74)
                                                            
                          
                          
                                                          Technics is the professional HIFI audio - video division of Panasonic, a world leader of electronics. So to answer simple : the headphones are not good, but excellents created for use of DJ's, studio or audiophile consumers. The headphones is built from quality materials, are simple to use and have a good frequency range from 8 Hz up to 30kHz.