The R6 Pro is a full-bodied sounding DAP that is able to provide impactful bass, intimate midrange and smooth treble expression. There is a satisfying sonic performance with an alluring listen. In addition, it boasts many functionalities such as the MSEB tuner, HiBy link and QC3.0 quick charge. The HiBy R6 Pro is an excellent DAP and the highly musical sound creates an enjoyable listen.