inputs.text: excellent little amplifier mp3 player - excellent little amplifier mp3 player quality construction high needed outside usage like motorcycle audio systehem using inside office stereo also works well however cons 1 systehem no mp3 menus concept folders simply plays whatever finds usb sd mehemory not fancy work reliably 2 no power supply rehemote battery must added order 3 silly lightshow leds open case pull cable turn thehem silly waste circuitry 4 no lineout earphone jack problehem since wanted use powered speakers already installed construct couple levelconverting resistor bridges connect thehem earphone jack would add much value amp lightshow doespros 1 excellent technical specs see previous review richard baty data 2 solid tight robust construction minimal weight 3 good sound usb sd readers though volume levels seehem slightly different thehem files played sidebyside comparison 4 rehemote works well since unit functions rehemote also simple complete 5 great value money unit not features want everything claims well good enough find something better