Gecko Maestro HRM 1881PRO mkII User manual

SAFETY INSTRUCTIONS & SYMBOLS GUIDE
SAFETY INSTRUCTIONS & SYMBOLS GUIDE
For your own safety and to avoid invalidation of the warranty, all text marked with these symbols should be
read carefully.
SYMBOLS:
SYMBOLS:
SAFETY INSTRUCTIONS:
SAFETY INSTRUCTIONS:
•To reduce the risk of electrical shock, do not remove covers. No user-serviceable parts inside. Please
refer servicing to ualified personnel.
•To reduce the risk of electrical shock or fire, do not expose the e uipment to rain or moisture.
•Do not impose unnecessary stress on your e uipment (i.e. placing heavy objects on it, over screwing its
mounting, etc).
•Read and keep the instruction manuals in a safe place for future references.
•Do not attempt to clean the e uipment with chemical solvents as this may damage the finish. Clean only
with a dry cloth.
•Do not block any ventilation openings.
•Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that
produce heat.
•Do not defeat the purpose of the polarized or grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the grounding prong is provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for the replacement of the obsolete outlet.
•Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
• Unplug the apparatus during lightning storms or when it is not in use for a long period of time.
!
NOTES
NOTES
Contain important information and useful tips on the operation of your e uipment.
WARNING
WARNING
The lightning flash with arrowhead symbol within an e uilateral triangle, is intended to
alert the user to the presence of uninsulated dangerous voltage within the product’s
enclosure that may be of sufficient magnitude to constitute a risk of electric shock.
CAUTIONS
CAUTIONS
The exclamation point within an e uilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in thee
literature accompanying the appliance. Please read the manual carefully.
H
HEADPHONES EADPHONES SAFETY SAFETY WARNIN WARNING G
Contain important information and use useful tips for headphones outputs and monitoring
levels.

•Use only attachments/accessories specified by the manufacturer.
•Always shut down power supply when not in use to save energy and for a prolonged lifespan.
•Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary
considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if
exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety
and Health Administration (OSHA) and the Singapore Workplace Safety and Health Council (WSHC)
has specified the permissible noise level exposures shown in the following chart. According to OSHA
and WSHC, any exposure in excess of these permissible limits could result in some hearing loss. To
ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all
persons exposed to e uipment capable of producing high sound pressure levels use hearing protectors
while the e uipment is in operation. Earplugs or protectors in the ear canals or over the ears must be
worn when operating the e uipment in order to prevent permanent hearing loss if exposure is in excess
of the limits set forth here:
Duration/Da (Hours) dB, Sound Pressure Level (SPL) Descriptions
Below 90dB Safe zone
8.00 90 Hearing damage
6.00 92
4.00 95
3.00 97
2.00 100 Serious hearing damage
1.50 102
1.00 105
0.50 110
0.25 or less 115 Human pain threshold
GECKO MUSIC GROUP
GECKO MUSIC GROUP
Singapore | Malaysia | Taiwan | Philippines | Canada
Email: [email protected] • Website: www.geckomusicgroup.com

FOREWORD
FOREWORD
Dear Friends,
Thank you very much for purchasing uality products by GECKO MUSIC GROUP. I am very grateful that we
have journeyed this far, since 2002! We have set new audio standards in the industry and we have touched
and changed lives along the way! I believe our journey will not stop but continue to pursue more
breakthrough findings and improvements that will change our lives for the better.
At GECKO MUSIC GROUP we focus on developing nothing but the best professional audio e uipment and
premium grade audiophile products you ever need! Our engineering team is constantly doing R&D to meet
this goal. I thank God that by His grace, we have succeeded in developing the revolutionary C.R.I.S.T.A.L.®
technology that has changed and is changing the way how audio is captured, encoded, reproduced and
managed!
On behalf of GECKO MUSIC GROUP, I would like to pledge our continuing commitment to uphold our
traditions in serving the music and audio communities around the world with more value-added premium
uality GECKO® professional audio e uipment and premium grade audiophile products!
Once again, thank you very much for your support. We trust you will love what you hear!
Yours truly,
Daniel Foo
Founder/Director (R&D)
GECKO MUSIC GROUP

TABLE OF CONTENTS
TABLE OF CONTENTS
INTRODUCTION 1
WHAT'S IN THE BOX 2
HEADPHONES ELEMENTS 4
CLEANING 5
SPECIFICATION 6
WARRANTY 7
NOTES: Congratulations on purchasing the GECKO® MAESTRO
HRM 1881PRO mkII C.R.I.S.T.A.L.® Audiophile reference
headphones! We recommend that you take a moment and read
through the manual as it provides information that will aid you in
using your unit to its fullest potential.
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© GECKO MUSIC GROUP. All Rights Reserved.