Some reviews on this device allude to the volume not being loud enough. After owning it for a month, I agree whole heartily. I'm a rocker..what can I say..I like my music loud(not insanely loud) but loud nonetheless. I have the much larger Zen and although I dig the reduced size of the 512TXFM, I honestly miss the volume of the Zen. I know, I know, you can mess with the equalizer..done that already..still not the same..I know, I know, you can run your MP3's through an external gain software like MP3 gain..love that MP3 gain, but why should I have to add another step before uploading my tunes into the MuVo? So, what I have been doing is uploading my tunes and then during playback I find the ones that are really low in volume(most 70's stuff) and then go in take it out, MP3gain it, put it back in......bummer..Otherwise, this is a great little product and well worth the $$$