Adjusting recording quality
You can vary the quality of your line-in recordings by selecting a bitrate setting.
- Press the Back/Options
button.
You may need to do this more than once until the main menu appears.
Select Extras 
Line-in Recording.
Press and hold the Back/Options 
button and select Rec. Bitrate.
Select the bitrate you want.
Notes
- Note that higher bitrates offer better sound quality but take up more storage space.