Gecko AYERS ROCK Series User manual

GECKO® AYERS ROCK DI 100P / DI 200P
www.geckomusic.net
www.geckomusic.net
OWNER'S MANUAL
OWNER'S MANUAL

GECKO® SAFETY INSTRUCTIONS & SYMBOLS GUIDE
GECKO® 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 qualified personnel.
•To reduce the risk of electrical shock or fire, do not expose the equipment to rain or moisture.
•Do not impose unnecessary stress on your equipment (i.e. placing heavy objects on it, overscrewing its
mounting etc).
•Read and keep the instruction manuals in a safe place for future references.
•Do not attempt to clean the equipment with chemical solvents as this may damage the finish. Clean only
with 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 equipment.
WARNING
WARNING
The lightning flash with arrowhead symbol within an equilateral 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 equilateral 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 on 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 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) has specified the permissible noise level exposures shown in the
following chart. According to OSHA, 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 equipment capable of producing high sound pressure levels
use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or
over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if
exposure is in excess of the limits set forth here:
Duration/Day (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
71, Ubi Road 1, #05-34, Oxley BizHub, Singapore 408732.
Email: [email protected] • Website: www.geckomusic.net

FOREWORD
FOREWORD
Dear Friends,
Thank you very much for purchasing quality products by GECKO MUSIC GROUP. I am indeed very
delighted that we have journeyed this far, setting new standards in the audio and music industry while
touching and changing lives along the way!
At GECKO MUSIC GROUP we focus on developing nothing but the best professional audio equipment and
premium grade musical instruments you ever need! It has been our philosophy all this while that good sound
reproductions can be achieved at a fraction of a premium. Our engineering team is constantly doing research
and development to meet this objective. We thank God that by HIS grace, we have succeeded in developing
the revolutionary C.R.I.S.T.A.L.® Audiophile technology that is changing the way how sound is being
encoded, reproduced and managed!
On behalf of GECKO MUSIC GROUP, I would like to pledge our continuing commitment to uphold our
traditions in serving music and audio communities around the world with more value-added highest possible
quality GECKO® professional audio equipment and premium grade musical instruments!
Once again, thank you very much for your support.
Yours truly,
Daniel Foo
Founder / Chairman
GECKO MUSIC GROUP

TABLE OF CONTENTS
TABLE OF CONTENTS
INTRODUCTION 1
FEATURES 2
MAKING CONNNECTIONS 3
FREQUENTLY ASKED QUESTIONS (FAQS) 4
SPECIFICATIONS 5
WARRANTY 6
NOTES: This manual covers the single channel GECKO® AYERS
ROCK DI 100P and the stereo two (2) channels GECKO® AYERS
ROCK DI 200P. As both devices are virtually identical, this manual will
discuss the GECKO® AYERS ROCK DI 100P.
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© GECKO MUSIC GROUP. All Rights Reserved.

INTRODUCTION
INTRODUCTION
The GECKO® AYERS ROCK DI 100P and DI 200P are considered by many to be the world’s first passive
audiophile quality direct injection boxes. The GECKO® AYERS ROCK DIs employ Jensen® isolation
transformers coupled with GECKO® C.R.I.S.T.A.L.® Audiophile PreAmps technology for optimum audio
performance; offering spectrum linearity, headroom enhancement, and extraordinary level handling without
introducing distortion.
Being completely passive, the GECKO® AYERS ROCK DIs do not require any form of powering (i.e. AC/DC,
batteries, +48V phantom) and have the unique advantage of eliminating 60-cycle ground loops. These make
the GECKO® AYERS ROCK DIs definite favourites with informed audio engineers and musicians.
The GECKO® AYERS ROCK DIs are great for guitars, basses, and keyboards and are particularly adept
with high-output, broadband instruments such as active instruments and digital keyboards.
In brief, the single channel GECKO® AYERS ROCK DI 100P and the dual channel GECKO® AYERS ROCK
DI 200P are:
* designed for audiophile, studio, and live applications;
* absolutely zero-phase distortion;
* robust and maintenance free.
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© GECKO MUSIC GROUP. All Rights Reserved.

FEATURES
FEATURES
Congratulations on your purchase! Now you are ready to check out the GECKO® AYERS ROCK DI 100P.
You will soon find that its extremely linear audio spectrum exhibits almost no distortion in the most rigorous
and demanding usage. Guaranteed virtually zero-phase distortion throughout the audio bandwidth, you will
be amazed by its output audiophile enhanced clarity. Enjoy!
The GECKO® AYERS ROCK DI 100P features a ¼” TS (mono) input connector that connects to the source
or instrument, a XLR (female) input connector that takes in a microphone-level signal for audiophile
enhancement as well as noise clean-up, a ¼” TS (mono) LINK connector that connects the instrument to the
backline amplifier and finally, a low impedance balanced XLR (male) output connector that provides a clean,
balanced, C.R.I.S.T.A.L.® Audiophile PreAmps enhanced signal to the mixer. A 0dB, -20dB, -40dB input PAD
switch and output GROUND LIFT switch are also present to process the signal.
Rugged road-worthy steel enclosure.Ergonomically-designed rubber
corners for secured DI stacking and
slip-prevention.
GROUND LIFT: lifts ground from Pin 1
on the XLR output.
XLR OUTPUT: clean, balanced,
C.R.I.S.T.A.L.® Audiophile PreAmps
enhanced, low-Z microphone-level
output.
LINK: connects to backline amplifiers.
0dB, -20dB, -40dB PAD:
reduces input level from
extremely-high output
device.
¼” TS INPUT: connection
for hi-Z instrument like
guitar, bass, and
keyboard.
XLR INPUT: takes in a microphone-level
signal for audiophile enhancement as well
as noise clean-up.
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© GECKO MUSIC GROUP. All Rights Reserved.

MAKING CONNECTIONS
MAKING CONNECTIONS
The GECKO® AYERS ROCK DI 100P offers “plug and play” operation. However, it is a good practice to
always make sure all volume levels on your instrument are turned down and your audio system is switched
off before connecting the GECKO® AYERS ROCK DI 100P. This is to avoid possible sudden plosives or loud
“pops” that may be present in your audio system from causing system damage. The GECKO® AYERS
ROCK DI 100P does not require any form of powering and its operation will not be affected by the +48V
phantom power from your mixer if it is turned on.
Start off by connecting the instrument or source device to the INPUT connector on the GECKO® AYERS
ROCK DI 100P, with the PAD switch at 0dB position. The LINK connector is used for connecting the signal
from the instrument to the musician’s stage backline amplifier. The LINK connector can also be used in
feeding line-level signal to a second mixing console, recording device, or monitoring system.
Finally, connect the GECKO® AYERS ROCK DI 100P’s XLR OUTPUT to the microphone input of a mixing
console or other suitable device. You can now switch on your system and reference all volume levels to your
desired application. If you have a balanced and linear audio system, you shall be experiencing a clean,
balanced, C.R.I.S.T.A.L.® Audiophile PreAmps enhanced, low-Z microphone-level output signal at this stage.
Else, If you are encountering any buzz or hum, try lifting the ground using GROUND LIFT switch on the
GECKO® AYERS ROCK DI 100P. If you are hearing any distortion, try checking the input level at your
mixing console first and then, if your input controls appear normal, try applying either a -20dB or -40dB input
PAD on the GECKO® AYERS ROCK DI 100P, eliminating distortion caused by extremely-high output
sources. Remember to reference the input controls on your mixing console after applying the PAD.
Typical DI Box Setup Diagram.
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© GECKO MUSIC GROUP. All Rights Reserved.

FREQUENTLY ASKED QUESTIONS (FAQs)
FREQUENTLY ASKED QUESTIONS (FAQs)
Q: What is a direct injection box (DI)?
A: A direct injection box or DI in short is an impedance-matching and signal-balancing device. DI converts
high impedance (hi-Z) instrument signal to microphone-level (low-Z) balanced line for interface with
professional audio equipment such as mixing console. A good DI will ensure proper electrical signals are
maintained throughout the signal chain and allow long cable runs without added noise. A good DI box is as
important as a good microphone.
Q: What is an active direct box (DI)?
A: An active DI relies on amplifier circuity that requires power. It must either run on batteries, phantom power
from the mixing console, or use an external power source like an AC/DC supply. When the power is low,
there will be distortion. If you run an active DI on batteries, ensure that the batteries are at full charge. This is
most often impractical, if not impossible.
Q: Are active direct injection boxes better?
A: Both active DIs and passive DIs have their place in professional audio, just like condenser and dynamic
microphones do. Active DIs can have louder outputs while passive DIs tend to sound more natural and less
colored than active DIs. The real advantage of passive DIs over active ones is that they eliminate hum and
buzz caused by ground loops by using a transformer to isolate the input signal from the output.
Q: What are the benefits of using GECKO® AYERS ROCK DI?
A: The GECKO® AYERS ROCK DI gives you a clean, balanced, C.R.I.S.T.A.L.® Audiophile PreAmps
enhanced, low-Z microphone-level output. With its frequency response of 10Hz ~ 25kHz, the GECKO®
AYERS ROCK DI is able to cater to wide range of signals processing and applications. The GECKO®
AYERS ROCK DI does not require any form of powering, and is practically maintenance free. Imagine the
savings you will get in the long run from not having to buy batteries!
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© GECKO MUSIC GROUP. All Rights Reserved.

SPECIFICATIONS
SPECIFICATIONS
Frequency Response:
10Hz ~ 25kHz
Noise Level:
-100dBu (22Hz ~ 22kHz, Input Shorted)
THD+N:
0.01% Typical 1VRMS, 1kHz (10Hz ~ 22kHz)
Inputs:
GECKO® AYERS ROCK DI 100P:
Balanced, XLR Female (1), Unbalanced, ¼” TS (1)
GECKO® AYERS ROCK DI 200P:
Unbalanced, ¼” TS (2)
Outputs:
GECKO® AYERS ROCK DI 100P:
Balanced, XLR Male (1), Unbalanced, ¼” TS LINK (1)
GECKO® AYERS ROCK DI 200P:
Balanced, XLR Male (2), Unbalanced, ¼” TS LINK (2)
PAD Settings:
0dB, -20dB, -40dB, (on each channel)
GROUND LIFT:
Switch (Individual switch on each channel)
Physical Properties:
Enclosure: Aluminium
Color: Metallic Blue
Net Weight: 0.40Kg
Dimension: (H) 50mm x (W) 158mm x (D) 100mm
Included Accessories:
Pouch, Soft Case
Specifications subject to change without prior notice. Manufactured under ISO9000 certified management
system.
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© GECKO MUSIC GROUP. All Rights Reserved.

Terms of Warranty
GECKO MUSIC GROUP warrants its GECKO® products for a period of three (3) years 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, cross faders, potentiometers, keys/buttons, valves,
guitar/bass strings, machine heads, pick-up covers, vinyl 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.
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 inadequate and or improper packing.
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
subsequently 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.