
Table of Contents
1Before Using the AU521..........................................................................4
1.1 Important Notices.............................................................................4
1.2 Safety Notices..................................................................................4
2Introduction..............................................................................................5
2.1 Overview..........................................................................................5
2.2 Features...........................................................................................5
3Locating Controls.....................................................................................5
4AU521 Operating Modes .........................................................................6
5AU521 Basic Operation ...........................................................................7
5.1 Turning the AU521 On/Off...............................................................7
5.2 Adjusting the Volume.......................................................................7
5.3 Battery .............................................................................................8
6AU521 System Menus and Advanced Settings .......................................8
6.1 System Modes.................................................................................9
6.2 Record Date/Time Setting................................................................9
7Listening to Music..................................................................................12
7.1 Play/Pause.....................................................................................12
7.2 Music Selection..............................................................................12
7.3 Music Play Menu ...........................................................................12
8Voice Recording ....................................................................................13
8.1 How to Record...............................................................................13
8.2 Voice Type.....................................................................................14
9Playing Recorded Files..........................................................................14
9.1 Playing Recorded File....................................................................14
10 Listening and Recording FM..................................................................15
10.1 FM Mode Menu..............................................................................15
11 File Mangement.....................................................................................16
11.1 Select Local or User Folder ...........................................................16
11.2 Deleting Files.................................................................................16
12 Using USB Disk Function.......................................................................17
12.1 USB Display Mode.........................................................................17
12.2 Disk Encryption..............................................................................17
12.3 Upgrading Firmware ......................................................................17
13 Specifications.........................................................................................18
14 Frequently Asked Questions (FAQs) .....................................................19
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