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INTRODUCTION
Congratulations! You’ve purchased one of the finest noise-
canceling headphones available. Its innovative technology
eliminates unwanted outside noise and enables your private
listening pleasure even in noisy environments. Please read
this user guide carefully to ensure the best performance of
your headphones.
FEATURES
• State-of-the-art noise canceling circuit design eliminates
virtually all background ambient noise for total quiet listening enjoyment
• Large 30mm drivers for unsurpassed audio — rich, powerful, with full frequency
response and punchy bass
• Compact folding design and leatherette pouch for easy transport while travel-
ing—perfect for private listening without distracting ambient noise in airplanes
and other noisy environments
• Full-size padded leatherette ear cups and adjustable headband for ultimate long-
lasting wearing comfort and fit for all head sizes
• Uses single AAA battery (included)
• 3.5mm stereo mini-plug — 2-prong airline jack adapter included
• Operates as standard passive headphones when noise canceling circuitry is
inactivated
RacketBlaster™ QH-30NC
Noise Canceling Stereo Headphones
U S E R G U I D E
90 DAYS WARRANTY
Nady Systems, Inc. warrants to the original consumer purchaser that your unit is free from
any defects in material or workmanship for a period of 90 days from the date of purchase. If
any such defect is discovered within the warranty period, Nady Systems, Inc. will repair or
replace the unit free of charge, subject to verification of the defect or malfunction upon
delivery or shipping prepaid to Nady Systems.
Important:
Please do not return our product to the store where it was purchased. Nady Systems, Inc.
accepts the responsibility of keeping you a satisfied customer.This warranty does not apply
to defects or physical damage resulting from abuse, neglect, accident, improper repair,
alteration, or unreasonable use of the unit resulting in cracked or broken cases or parts, or
units damaged by excessive heat, and does not apply to batteries or damage caused by
leaking batteries.This warranty does not cover finish or appearance items nor items dam-
aged in shipment en route to Nady Systems Inc. for repair.You must include proof of date
and place of purchase (i.e. photocopy of your bill of sale) or we cannot be responsible for
repairs or replacement. If factory service is required, you must contact our Service
Department at 510/652-2411 for a return authorization (RA) number. Make sure the RA
number is clearly marked on the outside of the package.Nady Systems, Inc. will not repair
nor be held responsible for any units sent without proper identification and return address or
RA number clearly marked on the package. For service, ship units prepaid to: Nady
Systems, Inc., Service Department, 6701 Shellmound St., Emeryville, CA 94608.
Any applicable implied warranties including warranties of merchantability and fitness are
hereby limited to 90 days from date of purchase. Consequential or incidental damages
resulting from a breach of any applicable express or implied warranties are hereby exclud-
ed.This warranty is in lieu of all other agreements and warranties, general or special,
express or implied and no representative or person is authorized to assume for us any other
liability in connection with the sale or use of this Nady System's product. Some states do
not allow limitations on how long implied warranties last and do not allow exclusion of inci-
dental or consequential damages so the above limitations and exclusions may not apply to
you.This warranty gives you specific legal rights and you may also have other rights which
may vary from state to state.
QH30NC_userguide 2/5/07 9:32 AM Page 1