User guide
iAUDIO U2
38
Voice Active
Off
Line Volume
Level 6
Auto Sync
Off
Advanced Operations
Recording
5. Voice Active 
• When Voice Active is On, iAUDIO pauses recording automatically when there 
is no sound input, and resumes when sound is detected. This feature is very 
useful to save memory. 
• You can choose a number between 0~10. A smaller value is more sensitive 
to sound. If this value is set too high compared to the surrounding noise, the 
sensitivity of iAUDIO drops, causing it to remain in Waiting status. Therefore, 
be sure to set this value to 0 (Off) when recording for an important occasion.
6. Line Volume
• Adjust the input volume level (recording level) of the Line-in input.
• Optimum level depends on your external audio source. Try and test various 
values before starting actual recording.
7. Auto Sync
• When Auto Sync is On, iAUDIO detects the sound input from the Line-in 
input and recognizes blanks between tracks to save the tracks separately as 
individual files. 
• This level depends on your external audio source. Try and test various values 
before starting actual recording.










