And yet you don't provide any ....... here: http://sonove.angry.jp/RMAA/iPod Classic 6th 160G.htm iPod Classic 6th gen - measurably flat with slight roll off in the treble (about 0.5 dB down at 20 kHz) - you won't notice it. Most modern DAPs do the same. Distortion is lower than our audible levels. Objectively the iP6C and iP7C are both very good sources. Honestly, this anti-Apple BS is getting a bit old. They make very clean, very good sounding gear. They pretty much always have.