USER GUIDE
2
COPYRIGHT NOTICE
General
•  iAUDIO is the registered trademark of COWON SYSTEMS, Inc.
•  This product is for home use only and cannot be used for business purposes. 
•  COWON SYSTEMS, Inc. has the exclusive copyright for this User Guide. It is prohibited to distribute this 
User Guide in part or in whole without permission. 
•  COWON SYSTEMS, Inc. has the copyrights for JetShell and JetAudio. It is prohibited to distribute or 
commercially use them without written permission from COWON SYSTEMS, Inc.
•  The MP3 files created with the MP3 conversion feature of JetShell and JetAudio can be used for personal 
use only and not for commercial or service purposes. Violating this regulation is in conflict with domestic 
copyright laws. 
•  COWON SYSTEMS, Inc. complies with the laws and regulations related to records/videos/games. 
Complying with all any other codified laws is the responsibility of the actual users.
•  In order for customers who purchased the product to receive specialized iAUDIO services, we recommend 
that they accomplish customer registration at http://www.iAUDIO.com. Various specialized benefits are only 
provided for members who have completed a lawful customer registration. 
•  The various examples, drawings and pictures included in this User Guide are subject to change without prior 
notice when new product enhancements become available. 
BBE Related 
•  BBE is produced by the license of BBE Sound, Inc.
•  BBE Sound, Inc. has the license rights for BBE under USP4638258, 5510752 and 5736897.
•  BBE and the BBE symbol are the registered trademarks of BBE Sound, Inc.
iAUDIO U2
All rights reserved by COWON SYSTEMS, Inc. 2004
4 Precautions
Never use the product for 
other purposes than those 
described in this guide. 
Do not leave the product in an 
extremely hot or humid place. 
The warranty will be voided if this 
happens.
Pay attention to the USB cable di-
rection when connecting the product 
to PC. The PC or the product may 
be damaged if you connect the USB 
cable in the wrong direction. 
Never use damaged or worn USB 
cable.
Take special attention 
when touching the 
product box, user’s 
manual and accessories 
to avoid cuts.
Do not attempt to service 
the product yourself as 
opening or removing 
covers may expose you to 
dangerous voltage or other 
hazards. The warranty will 
be voided if this happens.
If the product emits an unusual 
odor or excessive heat, or you 
notice anything else that seems 
unusual, do not use the product 
and contact our Customer 
Service Center.
* The product may be damaged or LCD can not be displayed if the product is stored/used 
in an extremely hot or cold place. 
iAUDIO U2
Precautions
5
Do not use the product near 
water. Do not touch this 
product with wet hands.
Note that malfunctions may 
occur if you use the product 
in places where static 
electricity occurs frequently.
Use only the AC Power adapter 
and USB cable supplied by 
COWON Systems with this 
product.
Avoid using the player at high 
volume. Hearing experts advise 
against continuous, loud and 
extended play.
Be sure to back up your data files. 
The files on the player may be 
deleted while using the product. 
We are not responsible for any dam-
aged or lost files that are not saved 
on your computer. 
Customer Service Center does not 
back up your data while servicing.
Be sure to disconnect 
the power supply to 
the PC and AC adapter 
during lightening or 
thunderstorms, so as to 
prevent danger to the user 
or eliminate the risk of fire.
 * Never unplug the USB cable if the LCD status is not READY. 
File operation may work by internal cache even if it is displayed as completed in Windows Explorer.
iAUDIO U2
6 Table of Contents
1. iAUDIO
What you can do with iAUDIO
Package components 
Features 
Specifications 
Name of Parts 
Charging iAUDIO / Connecting USB Cable 
LCD Display
Basic Operations
Advanced Operations 
Troubleshooting 
Using buttons
2. JetShell
What is JetShell ? 
Connecting iAUDIO and Installing JetShell 
Introducing JetShell 
Downloading Music Files to iAUDIO 
Deleting Files in iAUDIO
Initializating iAUDIO (Formatting)  
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10
11
12
13
14
15
16
28
41
43
47
48
52
56
58
59
Table of Contents
7
Converting Audio CD to MP3 Files and Downloading 
Other Features
Installing and Using JetAudio 
LDB Manger - Automatic Lyric Search and Display   
Guide to Firmware Upgrade
FCC Statement
Warranty /  Technical Support
60
63
66
33
67
74
75
iAUDIO U2
8
What you can do with iAUDIO
What you can do with iAUDIO
iAUDIO is a portable digital music player produced by COWON Systems, Inc. You can easily 
transfer digital music files from your computer to iAUDIO, and carry it anywhere to enjoy. It also 
supports FM radio listening/recording, as well as voice recording and direct encoding through built-
in microphone and Line-In input jack. 
Enjoy 20 hours of playback with built-in rechargeable battery.
iAUDIO’s ultra power-saving circuit enables upto 20 hours of continuous playback with fully charged 
lithium-polymer rechargeable battery. (Based on our company’s test environment)
Record your voice memo anywhere anytime
Built-in microphone provides high-quality voice recording, perfect for capturing ideas, dictating 
memos and saving reminders anytime, anywhere. You can also save them to your PC for playback 
later on, and send the message as an e-mail. 
Create MP3 file from analog sources (Direct encoding) 
Create MP3 files directly from your analog audio sources such as tape player, CD player or TV. 
Simply connect the iAUDIO's Line-In jack to the output jack of other audio device with a included 
stereo cable, then start direct encoding. You can transfer the MP3 files to your PC for playback later 
on. 
Listen to FM stereo radio and Record it at the same time 
Listen to FM radio and record it by pressing a button, instantly. Play them back on iAUDIO, or save 
to your PC for playback or e-mail. You can preset up to 20 radio stations.
              
iAUDIO U2