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.
______________________________________________________________________________________
© GECKO MUSIC GROUP. All Rights Reserved.

INTRODUCTION
INTRODUCTION
The GECKO® MAESTRO HRM 1881PRO mkII C.R.I.S.T.A.L.® Audiophile reference headphones came
about from the success of the mkI MAESTRO HRM 1881PRO, by the re uest of our users.
Be it listening to music at home, mixing a song in a recording studio, mastering an album in a mastering lab,
or monitoring your live performances, from the very first note you will hear vocals, musicians and instruments
in a whole new way. Voices and instruments appearing to the details as if they are playing live right in front of
you. These are not DSP effects, they are simply the natural sounds of the recording and or audio source
coming through striking emotional chords, that's the MAESTRO HRM 1881PRO mkII.
The GECKO® MAESTRO HRM 1881PRO mkII features the latest C.R.I.S.T.A.L.® Audiophile Dynamic II
Drivers for an enhanced range of fre uency response and an improved precision audio reproductions.
From the feedback of our users, the GECKO® MAESTRO HRM 1881PRO mkII headband now comes
wrapped with handstitched genuine refined lambskin leather for the premium comfort and look that last
longer. All the hand-stitching works are done by our Master Leather Artist in Singapore.
The GECKO® MAESTRO HRM 1881PRO mkII also comes as a system with high- uality audiophile-grade
cables, a pouch, and a headphone bag to help keep the headphones safe in your possession. Machined
aluminium construction and high uality finish made to last a lifetime, premium-grade replaceable earpads
for a soft connection to the ears, and a plethora of adjustability for fit adds to your enjoyment of music for
years to come.
Every piece of the GECKO® MAESTRO HRM 1881PRO mkII is crafted passionately using the best
components in the industry. The lead time for delivery is two weeks from the date of confirmed order.
The GECKO® MAESTRO HRM 1881PRO mkII is your true connection to your music!
Features in a glance:
•C.R.I.S.T.A.L.® Audiophile Dynamic II Driver for highly precise and natural audio reproductions
•Wide and smooth fre uency response range
•Closed-back design incorporating GECKO® Double Noise Rejection (GDNR)™ technology
effectively reducing the ambient noise
•Handstitched genuine refined lambskin leather for the premium comfort and look that last longer
•Replaceable soft earpads for long hours of wearing comfort
•Designed for audiophile music listening, studio mixing, mastering, and live monitoring applications
______________________________________________________________________________________
1
1
© GECKO MUSIC GROUP. All Rights Reserved.

WHAT'S IN THE BOX
WHAT'S IN THE BOX
MAESTRO HRM 1881PRO mkII HEADPHONES:
______________________________________________________________________________________
2
2
© GECKO MUSIC GROUP. All Rights Reserved.

CARRYING BAG WITH EMBROIDED GECKO® LOGO:
POUCH:
______________________________________________________________________________________
3
3
© GECKO MUSIC GROUP. All Rights Reserved.

HEADPHONES ELEMENTS
HEADPHONES ELEMENTS
______________________________________________________________________________________
4
4
© GECKO MUSIC GROUP. All Rights Reserved.
1
4
2
3
5
6
7
5

1. HEADBAND
Wrapped with handstitched genuine refined lambskin leather for the premium comfort and look that last
longer. All the hand-stitching works are done by our Master Leather Artist in Singapore. Headband includes
length adjustment mechanism and ear cup rotation.
2. BRUSHED ALUMINIUM YOKE
Brushed aluminium yoke specially designed to fit all sizes and varying shaped heads.
3. CLOSED-BACK EAR CUP
Closed-back brushed aluminium base ear cup with GECKO® Double Noise Rejection (GDNR)™ technology
effectively reducing the ambient noise.
4. REPLACEABLE EARPADS
Soft thick memory foam cushion earpads. These earpads are designed to be easily replaceable. Contact
your GECKO® Authorized Reseller for genuine parts.
5. CABLE
4mmø shielded TRUTH audiophile-grade spring cable (4m length in straight mode).
6. 6.3mm 24K GOLD-PLATED TRS CONVERTER
6.3mm (¼”) 24K gold-plated AUDIOPHILE series TRS audiophile-grade converter. Turn clockwise to tighten,
and counter-clockwise to release.
7. 3.5mm 24K GOLD-PLATED TRS MALE CONNECTOR
3.5mm (⅛”) 24K gold-plated AUDIOPHILE series TRS audiophile-grade connector.
CLEANING
CLEANING
•Clean your headphones by using a damp cloth and dabbing the leather until clean, do not rub the
cloth on the leather.
•Do not use cleaning detergents or leather polish, doing so may cause damage to the product.
•Occasional use of leather conditioner will help prolong the life span of the leather parts on your
headphones.
•It is advised that you clean your headphones regularly.
______________________________________________________________________________________
5
5
© GECKO MUSIC GROUP. All Rights Reserved.

SPECIFICATION
SPECIFICATION
Element:
C.R.I.S.T.A.L.® Audiophile Dynamic II
Driver Diameter:
53mmø
Noise Rejection:
GECKO® Double Noise Rejection (GDNR)™
Frequenc Response:
16Hz ~ 28kHz
Phase:
Linear
Impedance:
120Ω
Sensitivit :
-102±3dB at 1kHz (0dB = 1mV/Pa)
Rated Power:
250mW
Max. Input Power:
500mW
Cable:
4mmø Shielded TRUTH Spring Audiophile-Grade Cable (4m length in straight mode) with 3.5mm TRS 24K
Gold-Plated AUDIOPHILE Connector
Included Accessories:
GECKO® MAESTRO HRM 1881PRO mkII Carrying Bag, Pouch, 3.5mm to 6.3mm 24K Gold-Plated
AUDIOPHILE TRS Converter
Ph sical Properties:
Body/Parts Finish: Machined Aluminium
Headband: Handstitched Genuine Refined Lambskin Leather
Earpads: Replaceable Soft Thick Memory Foam Cushion Earpads
Color: Black
Net Weight: 350g
Specifications subject to change without prior notice. Manufactured under ISO9000 certified management
system.
______________________________________________________________________________________
6
6
© GECKO MUSIC GROUP. All Rights Reserved.

WARRANTY
WARRANTY
GECKO MUSIC GROUP warrants its GECKO® products for a period of one (1) year from the original date of
purchase, in accordance to the warranty regulations described below.
What is Covered:
During the applicable warranty period, GECKO MUSIC GROUP warrants the product against defects in
materials and workmanship and against malfunctions. GECKO MUSIC GROUP will remedy all such defects
and malfunctions without charge for parts or labour if the warranty applies. In the case that other parts are
used which constitutes an improvement, GECKO MUSIC GROUP may, at its discretion, charge the customer
for the additional cost of these parts. Final determination of warranty coverage lies solely with GECKO
MUSIC GROUP.
What is Not Covered:
1. If the product needs to be modified or adapted in order to comply with applicable technical or safety
standards on a national or local level, in any country which is not the country where the product was
originally developed and manufactured, this modification/adaptation shall not be considered a defect
in material or workmanship;
2. Normal wear and tear, in particular, of faders, crossfaders, potentiometers, keys/buttons, valves,
guitar/bass strings, machine heads, pick-up covers, PVC/PU/leather covers, illuminants, and similar
parts are not covered by this warranty;
3. Improper handling, neglect or failure to operate the unit in compliance with the instructions given in
the user or service manuals;
4. Connection or operation of the unit in any way that does not comply with the technical or safety
regulations applicable in the country where the product is used;
5. Damages/defects caused by force of nature or any other condition that is beyond the control of
GECKO MUSIC GROUP;
6. Any repair or opening of the unit carried out by unauthorized personnel (user included) will void the
warranty;
7. Modification or removal of serial numbers.
Obtaining Warranty Service:
To return a GECKO® product for warranty service, first fill out the Online Technical Report on this website
and submit for an authorization/service number. Write the authorization/service number so that it is
prominently displayed on the outside of the shipping carton. Any products received without an
authorization/service number that is clearly visible upon arrival at the factory will be refused. Enclose proof of
the original delivery date or a copy of the original sales receipt/invoice. Enclose a description of the
suspected defect or malfunction and the condition, if any, which caused the problem. Return the product to
either GECKO MUSIC GROUP or the GECKO® Store where the purchase was made. Note: Before sending
back to GECKO MUSIC GROUP, you can first check with your local GECKO® Store or authorized reseller
where you buy from for support.
Warranty Shipping:
You are responsible for prepaying shipping costs F.O.B. GECKO MUSIC GROUP, Singapore. Shipped
product(s) must be properly packaged. Use original shipping cartons and packing materials where possible.
GECKO MUSIC GROUP is not responsible for damages resulting from inade uate and or improper packing.
______________________________________________________________________________________
7
7
© GECKO MUSIC GROUP. All Rights Reserved.

Products received with damages due to improper packaging will be deemed out of warranty.
Products which do not meet the terms of this warranty will be repaired exclusively at the buyer’s expense.
GECKO MUSIC GROUP will inform the buyer of such circumstance. If the buyer fails to submit a written
repair order within six (6) weeks after notification, GECKO MUSIC GROUP will return the unit C.O.D. with a
separate invoice for freight and packing. Such costs will also be invoiced separately when the buyer has sent
in a written repair order.
Warranty Rights:
This warranty is exclusive and extended to the original buyer and is not transferable to anyone who may
subse uently purchase this product. No other person (apart from authorized GECKO® Stores) shall be
entitled to give any warranty promise on behalf of GECKO MUSIC GROUP.
______________________________________________________________________________________
8
8
© GECKO MUSIC GROUP. All Rights Reserved.