Using Headphones (Optional); Control (Intelligent Acoustic Control) - Yamaha NU1 Owner's Manual

Playing the Keyboard

Using Headphones (Optional)

Since this instrument is equipped with two [PHONES]
jacks, you can connect two sets of standard stereo head-
phones. If you are using only one set of headphones,
insert a plug into either jack, shutting off the speakers.
CAUTION
Avoid listening to the instrument at a high volume level
through headphones for a long period of time, to prevent
hearing damage.
I.A. Control (Intelligent Acoustic Control)
This function automatically adjusts and controls the sound quality according to the overall volume of the instrument.
Even when the volume is low, it permits both low sounds and high sounds to be clearly heard. Note that the I.A. Con-
trol is effective only from the sound output of the instrument speakers.
 To turn on/off the I.A. Control:
While holding down [FUNCTION], press the C0 key repeatedly (as necessary).
Default setting: On
 To adjust the I.A. Control Depth:
While holding down [FUNCTION], press one of the keys between A0–D#1.
Setting range: -3 (A0) – 0 (C1) – 3 (D#1)
Default setting: 0 (C1)
The higher the value, the more clearly that low and high sounds are heard at lower volume levels.
12 NU1
Owner's Manual
MASTER VOLUME
MIN MAX
USB TO DEVICE
Standard stereo phone
plug
D#1 (3)
C0 A0 C1
(-3) (0)
PHONES