1
—Owner’s Manual
Important
Read the Following Before Operating MT400
Warnings
• Do not locate MT400 in a place subject to excessive heat or in direct sunlight. This could be a
fire hazard.
• Do not place MT400 in a place subject to excessive humidity or dust. This could be a fire and
electrical shock hazard.
• Do not place heavy objects on the power cord. A damaged power cord is a potential fire and
electrical shock hazard.
• Do not place small metal objects on top of MT400. Metal objects inside MT400 are a fire and
electrical shock hazard.
• Do not try to modify MT400. This could be a fire and electrical shock hazard.
Cautions
• Turn off all audio devices and speakers when connecting to MT400. Refer to the owner’s
manual for each device. Use the correct cables and connect as specified.
• MT400 is a precision device. Handle it with care.
• If you notice any abnormality—such as smoke, odor, or noise—turn off MT400 immediately.
Remove the AC adapter from the AC outlet. Confirm that the abnormality is no longer
present. Consult your dealer for repair. Using MT400 in this condition is a fire and shock
hazard.
• If a foreign object or water gets inside MT400, turn it off immediately. Remove the AC adapter
from the AC outlet. Consult your dealer for repair. Using MT400 in this condition is a fire and
electrical shock hazard.
• If you plan not to use MT400 for a long period of time (such as when you are on vacation),
remove the AC adapter from the AC outlet. Leaving MT400 connected is a fire hazard.
• Do not use benzene, thinner, cleaning detergent, or a chemical cloth to clean MT400.
• Use only a soft, dry cloth to clean MT400.
Interference
MT400 uses high-frequency digital circuits that may cause interference on radios and
televisions placed close to it. If interference does occur, relocate the affected equipment.
Copyright
© 1998 Yamaha Corporation. All rights reserved.
No part of the MT400 software or this Owner’s Manual may be reproduced or distributed in
any form or by any means without the prior written authorization of Yamaha Corporation.
Trademarks
The dbx noise reduction system is manufactured based on a patent license from THAT
Corporation.
dbx is a trademark of Carillon Electronics Corporation.
All other trademarks are the property of their respective holders.