JVC KD-S51 Manuel D'instructions page 22

Indications
TAG DISP
Tag display
AMP GAIN
Amplifier gain control
AREA
Tuner channel interval
22
Selectable settings, [reference page]
TAG ON:
[Initial]; Shows the ID3 tag while playing MP3/WMA
tracks, [16].
TAG OFF:
Cancels.
You can change the maximum volume level of this receiver.
LOW PWR: VOL 00 – VOL 30 (Select this if the maximum power
of the speaker is less than 50 W to prevent them from
damaging the speaker.)
HIGH PWR: [Initial]; VOL 00 – VOL 50
AREA EU: Select this when using the receiver in an area other
than North and South America. (FM: 50 kHz—manual
tuning, 100 kHz—auto search; AM: 9 kHz)
AREA US: [Initial]; Select this when using the receiver in North
or South America. (FM: 200 kHz; AM: 10 kHz)