Princeton SP-88 - Manual (Page 6)

Use of a different type of adaptor risks
fire and/or electrical shock. For safety sake,
make sure to unplug the AC adaptor from the
wall outlet whenever leaving the piano
unattended for a long time or during an electrical
storm.
The headphone jack
There are two headphones jacks – jack “1” lets
you listen through BOTH the headphones and
internal speakers, jack “2” lets you listen
through the HEADPHONES ONLY (disconnects
the internal speakers).
Caution!
Never use the headphones with high volume,
as it may cause damage to your ears. In addition,
to prevent damage to your speakers,
ensure that the volume is set to the minimum
level before connecting any other device.
The AUX.OUT jack
When you want to listen to your piano with an
External amplifier or speaker, connect to the
AUX OUT L/MONO and R jacks on the left
panel. The volume is adjusted with the
VOLUME button. (For monaural playback, use
the L/MONO jack. For stereo playback, connect
both L/MONO and R jacks.)
The AUX.IN jack
The audio output from a CD player or other
audio equipment can be connected to the AUX
IN jack on the left panel so it can be mixed with
the sound of your piano. This function is
convenient when you want to play along with a
favorite song. The volume of the external signal
is adjusted with the MASTER VOLUME button.
The sustain jack
An optional footswitch can be plugged into the
SUSTAIN jack for sustain control. The
footswitch functions like the sustain pedal on a
piano.
CD Player