Clint L1 User Manual page 13

To change the scan settings, to stop only at stations with good signal
strength.
Press MENU > Scan setting > Strong stations only.
Note: In the example screen on the below, the asterisk indicates
'Strong stations only' is the currently set value.
Audio settings
By default, all stereo stations are reproduced in stereo. For weak
stations, this may result in poor quality audio. The audio quality
can be improved using mono.
Options: Stereo allowed | Forced mono
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