Applied Research and Technology HP-1 User manual

ARTcessories
User's Manual

IMPORTANT SAFETY INSTRUCTION – READ FIRST
This symbol, whenever it appears alerts you to the
presence of uninsulated dangerous voltage inside the
enclosure-voltage that may be sufficient to constitute
a risk of shock.
This symbol, whenever it appears, alerts you to
important operating and maintenance instructions in
the accompanying literature. Please read the manual.
Read Instructions: Retain safety and operating instructions for
future reference. Heed all warnings printed here and on the
equipment. Follow the operating instructions printed in this user
manual.
Environment: Protect from excessive dirt, dust, heat, and
vibration when operating and storing. Avoid tobacco ash, drink
spillage and smoke, especially that associated with smoke
machines.
Handling: Protect the controls from damage during transit. Use
adequate padding if you need to ship the unit. To avoid injury to
yourself or damage to the equipment, take care when lifting,
moving or carrying the unit.
Servicing: Refer servicing to qualified technical personnel.
Installation: Install the unit in accordance with the instructions
printed in the user manual.

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CAUTION: Battery Installation
2X1.5vAA batteries
When installing alkaline batteries, be sure to line up the "+" sign
on the battery with the "+" sign on the product's battery
compartment. Improper installation can cause a battery to leak
or overheat and lead to serious injury.
Do not use different types of batteries together
Do not mix old batteries with new ones
Do not mix rechargeable batteries with non-rechargeable
ones
Do not use batteries that are swollen, dented or damaged
in any way
INTRODUCTION
Thank you for purchasing Applied Research and Technology’s
HP-1. The HP-1 is a belt worn; battery powered headphone
amplifier that brings excellent performance to portable
applications. With a locking 1/4”/XLR Combo input jack, sturdy
belt clip and output volume control, it provides reliable
performance both on and off the stage. The HP-1 provides a high
output level when used with a variety of different headphones
and is great for in-ear monitoring applications. Its long battery life
will not leave you stranded. The HP-1 is packaged in a rugged
extrusion, with heavy duty jacks for years of reliable operation.
Get the very best out of your headphones with the HP-1!

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FEATURES
High Output Headphone Amplifier
Locking ¼”/XLR Combo Input Jack
Balanced Mono/ Unbalanced Stereo Switch
Variable Volume Control
Sturdy Belt Clip
Over 40hrs from 2 AA Batteries
3.5mm Output Connector
Rugged Design
INSTALLATION and OPERATION
Connect the output of a mixer to the ¼” or XLR input of the HP-
1. The locking Combo jack allows for a secure cable connection.
The volume control adjusts the output level and acts as a power
switch. To turn the HP-1 off, simply turn the volume pot fully
counterclockwise, or remove your headphones from the output
jack to preserve the battery life.
A green LED indicates the HP-1 is powered. This indicator will
turn red when the batteries are close to being depleted.
Balanced Mono/Unbalanced Stereo Switch
The inner switch should be set to balanced mono when the HP-
1 is used with a mixer’s aux send or any other mono source and
set to unbalanced stereo when it is connected to a headphone
output or other stereo source.

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CONNECTIONS
1. The input Combo jack, for connections to a monitor mix as
an example. Accepts both XLR and TRS ¼-inch jacks.
2. The Volume knob controls the output level and will power
down the HP-1, when turned fully counterclockwise.
3. The green led will light when the power is on and acts as
a battery indicator. Replace the batteries when red.
4. The Headphone output has a 1/8” stereo jack.
5. The Belt clip attaches to a belt or pant waistline for hands-
free use.
6. The Battery storage area button. Pressing the button and
sliding the shell toward the headphone jack opens the
compartment.
7. The Battery storage section allows the unit to be powered
by a pair of AA batteries. Please observe the correct
polarity when inserting new batteries.
8. The switch should be set to mono when you are using the
HP-1 with a mixer’s aux send or any other mono source
(near battery position) and set to stereo when you are
connected to a headphone output or other stereo sources
(near input connector).

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HOW TO INSTALL THE BATTERY
This button allows access to the battery compartment. Hold the
RELEASE button down and slide the outer shell down toward
the headphone jack to expose the unit’s interior. Insert the
batteries into the battery compartment and slide the unit back
into the shell.

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APPLICATIONS
Perfect for: Live use, Project studios, Home and Commercial
use!

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WARRANTY INFORMATION
Limited Warranty
Applied Research and Technology will provide warranty and
service for this unit in accordance with the following warrants:
Applied Research and Technology, (A R T) warrants to the
original purchaser that this product and the components thereof
will be free from defects in workmanship and materials for a
period of three years from the date of purchase. Applied
Research and Technology will, without charge, repair or replace,
at its option, defective product or component parts upon prepaid
delivery to the factory service department or authorized service
center, accompanied by proof of purchase date in the form of a
valid sales receipt.

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Exclusions
This warranty does not apply in the event of misuse or abuse of
the product or as a result of unauthorized alterations or repairs.
This warranty is void if the serial number is altered, defaced, or
removed.
A R T reserves the right to make changes in design or make
additions to or improvements upon this product without any
obligation to install the same on products previously
manufactured.
A R T shall not be liable for any consequential damages,
including without limitation damages resulting from loss of use.
Some states do not allow limitations of incidental or
consequential damages, so the above limitation or exclusion
may not apply to you. This warranty gives you specific rights and
you may have other rights, which vary from state to state.
For units purchased outside the United States, an authorized
distributor of Applied Research and Technology will provide
service
Fill in the following information for your reference:
Date of purchase ___________________
Purchased from ___________________

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SERVICE
The following information is provided in the unlikely event that
your unit requires service.
1. Be sure that the unit is the cause of the problem. Check to
make sure the unit has power, all cables are connected
correctly, and the cables themselves are in working
condition. You may want to consult with your dealer for
assistance in troubleshooting or testing your particular
configuration.
2. If you believe that the ART unit is at fault, go to
www.artproaudio.com. Select “Support”, then “Return
Authorization Request” to request a return authorization
number.
3. If you are returning the unit for service, pack the unit in its
original carton or a reasonable substitute. The original
packaging may not be suitable as a shipping carton, so
consider putting the packaged unit in another box for
shipping. Print the RA number clearly on the outside of the
shipping box. Print your return shipping address on the
outside of the box.
4. Include, with your unit, a note with the RA number and your
contact information, including a return shipping address (we
cannot ship to a P.O. box) and a daytime phone number,
and a description of the problem, preferably attached to the
top of the unit. Also include a copy of your purchase receipt.

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SPECIFICATIONS
Input Connections Locking ¼”/XLR combo jack
Input Impedance 5K Ohms
Max Input level +6.6dBu
Output Connections 3.5mm Jack (1/8”)
Gain +9dB
THD ≤ .02% @1kHz typ.
Max Output 105mW @ 0.1% THD
Typical run time 40 hrs. (Alkaline batteries)
Power Requirements 2-AA batteries Included
Dimensions (HxWxD) 5.4”x1.72”x1.6”
(137x43.7x40.6 mm)
Weight 0.51 lbs. / 0.23kg

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© 2022 Applied Research & Technology / Yorkville Sound
HP-1 HP1-5004-101