Yamaha UW10 Owner's Manual page 4

• Do not operate the instrument for a long period of time at
a high or uncomfortable volume level, since this can
cause permanent hearing loss. If you experience any
hearing loss or ringing in the ears, consult a physician.
Yamaha cannot be held responsible for damage
caused by improper use or modifications to the
instrument, or data that is lost or destroyed.
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UW10 Owner's Manual
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