main function: 1st high quality MIC records 2 duplicate, reads the function (A-B) 3 MP3 broadcasts 4 this machine current document deletes 5 quakeproof, the waterproofing, guards against static electricity 6 the USB migration saves (128M/256M/512M/1G/2G) 7 LINE-IN straight record 8 the many kinds of sounds effect pattern broadcast