i have not had a very good test before,beats by monster, so i chose to experiment with my laptop, the system environment is windwos7, foorbar player software is 0.9.6.4, the lossless audio formats are albums (epa),monster beats, styles the album is more diverse, he department of lyrical music, but also the most intense sense of rhythm, dance and song a strong r & b,beats headphones, including the most intense metal music, the hope to examine every aspect of the performance of his solo hd capacity.