inputs.text: disapointment - number simular cassettes web like one ion better reviews not mind paying little portable cassette much like years ago course not usb port held well dissapointment main problehem loud oscillation actually overpowered music playing cassette rendered recording uselessi believe defective unit not typical modelanother disapointment no option use external power supply question would \\how many batteries need copy cassettes\\ many surei returned unit mwaveclt responsive accomodating would no trouble ordering thehem future