A friend bought this unit to digitally transcribe a hundred lectures recorded on audio cassettes. This ion is a crude device DIY a classic cassette copier and a full galley. It has a digital output but only USB b: that is impossible to directly connect a USB stick or an additional HDD. We must devote your computer. The EZ program takes in and then forces you to download itunes, which grabs your hard drive is reorganized, cleaning it of hiding and now requires you to use its services. It blocks your computer cynically during the recordings and you forbidden to do anything else. it prohibits you moreover reduce the sound you're recording. And finally it does not. and instructions will offer no real help. Eventually I bought a cable and connected ballroom amp output to the input "phone" ... cool right? and it works? ... very bad !!! Case differences probably impedances? Do not buy this gadget. I am full of admiration for her fans!