inputs.text: misleading advertising 2x7 watts less not exactly 2x40 worked - good lesson bargain huntingmy particular piece reproduces loud scratchy noisesound not music vaguely recognize recorded materialopened guts inside lives lonely generic 15 pin ic amplifier circuit chip almost none supporting external components even wrote ic amps nameand surprise surprise rated output 2x7 watts not 2x40 watts thats first little marketing lie no biggie used would nicer say giving 2x15 20 watt white lie 7watts much no 40 watts misleading rated wattage not culprit course speculate ic circuit amp defective particular case far rudimentary electronics knowledge suggests amp department almost no external supporting components added even particular 2x7 watts ic circuit worked not sure could acceptably put even half 7 watts may wrong humbly acknowledge hope electronically non challenged people forgive uneducated lay man commentsi suppose good enthusiastic positive diy approach bring back contraption life improve itof course magical world marketing couple necessary components spend whole non amplifying amplifier together sort electronics enthusiast id say well focus good empty aluminum box cost almost two stars quite expensive piece generic extruded aluminum piece