inputs.text: clarity - yes first word came mind started listen music device research know exactly 901 brings table comes portable music players apples customer service best comes average consumer got tired headphone jacks ipods iphones going one earphone would play would not would get remanufactured device apple like call month two later thing etcloyalty go far look else cut loses device not smallest make sure check specifications devices size made purchases 901 two dedicated processors one channel hifimans reputation amazing amps headphones also able purchases amplifier cards headphones need 4 volts per channel amplifier cards available future device prior called 801 everything ive read device fair share issuesthe 901 not attractive portable music player market sound comes flawless im aware device company numerous software issues past hopefully issues stay past purchases 901 need go hifimans website download firmware updates not connect internet not play movies device not entertainment hub 901 high quality music player produces amazing sound unfortunately not small enough take gym workout opinion would recommend player anyone looking excellent music player downside player not receive lot bass frequency response 20hz20khz clarity yes bass isa must want player research find nice pair cans little bass boost please please please not embarrasses company buying dres beats bs headphone shure 535s shure 846s ultrasone edition 8s im laughing fostex 900s fostexs little bass boost would recommend headphones bass musthope review helps anyone looking player already knows thing hifiman needs player make protective case itupdate purchase item want get extra battery two im assuming 9hrs playtime isnt high gain setting amplifier cards new battery drain times got three half hours player recharge