Art HeadAmp4 Manuale utente

Four Channel Headphone Amplifier

Artcessories

User's Manual

IMPORTANT SAFETY INSTRUCTION – READ FIRST

This symbol, whenever it appears,

alerts you to the presence of

uninsulated dangerous voltage

inside enclosure-voltage that may be

sufficient to constitute 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

guide.

Do not open: There are no user serviceable parts inside. Refer

any service work to qualified technical personnel only.

Grounding: Only connect the unit to equipment with properly

grounded mains power. Do not defeat the grounding and

polarization means of the power cord plug of the connected

equipment. Do not remove or tamper with the ground

connection on the power cord of the connected equipment.

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 guide.

INTRODUCTION:

Thanks for purchasing Applied Research and

Technology’s DJ HeadAmp4. The HeadAmp4 is a

simple device which provides 4 channels of

amplification, each with individual volume controls

capable of directly driving up to 8 headsets

simultaneously.

FEATURES:

•4 Output channels each with individual volume

control.

•Stereo 1/4" and 1/8" inputs (wired in parallel) can

be connected to any line-level source or headphone

output.

•Four stereo 1/4" and four 1/8" headphone outputs.

•Power "On” LED.

INSTALLATION:

Connect the included power adaptor to the HeadAmp4

input jack and plug the adaptor into an appropriate AC

power outlet.

Connect the stereo line-level output or headphone

output from the mixer, tape deck, CD player, another

headphone amplifier, etc. to the HeadAmp4 stereo input

using a low noise stereo T/R/S (Tip, Ring, Sleeve) patch

cord.

A Monaural source, such as a mixer's monitor output,

can be connected to the HweadAmp4 input by using a

mono T/S to stereo T/R/S patch cord or adaptor. (The

Stereo T/R/S plug would have the Tip and the Ring tied

together so that the same mono signal is input to both

the left and right channels,. With an unmodified stereo

cord attached, sound will be present in one ear only.

Connect the headphones to the output jacks and adjust

the controls as required.

APPLICATIONS:

Offering a superb level of The ARTcessories HeadAmp4

is a simple, cost effective solution for any studio

requiring up to four additional channels of headphone

amplification, each with individual volume control. Ideal

for virtually any home or project studio, the HeadAmp4

easily adds additional headphone outputs to any mixer,

computer audio interface, workstation, iPod, media

player or laptop without creating any additional load on

the existing headphone source. Capable of driving up to

eight sets of headphones using a combination of 1/4-

inch and 1/8-inch TRS connections, the HeadAmp4 can

easily accommodate a variety of headphone models

with varying impedances. With up to 20dB of additional

gain, input signals to the HeadAmp4 can be taken from

any line level or amplified headphone source.

The HeadAmp4 can even be driven from other

headphone amplifiers, including other HeadAmp4’s

when creating a multi-unit distribution network. Multiple

HeadAmp4’s can be connected to a single source using

the 1/4-inch and 1/8-inch TRS parallel inputs.

The HeadAmp4 is the ideal headphone distribution and

control solution for complex recording studio

environments, assisted listening systems, education

workstations and can easily be used as a stereo

distribution amplifier for commercial PA installations.

The compact stackable chassis design and all-metal

construction ensure long-term reliability and convenient

installation of the HeadAmp4 for use in any studio or

commercial audio application. sound quality.

Signal Flow Chart

SPECIFICATIONS:

Maximum Input Level: +14dBu

Input Impedance: 90.9k Ohms

Maximum Output Level: +14dBu

Maximum Gain: 20dB

Output Impedance: 47 Ohms (each output)

Frequency Response: 20 - 20 kHz

S/N Ratio: > 90dB (ref 0dBu)

THD: < 0.01%

IMD (SMPTE): < 0.01%

Power: 12vDC (Adapter Included)

Dimensions HxWxD(in): 1.85 x 4.6 x 4.1

HxWxD(mm): 47 x 117 x 104

Weight(lbs/kg): 1.35 / 0.61kg

Note: 0dBu = 0.775Vrms

WARRANTY INFORMATION:

Limited Warranty (USA only)

Applied Research and Technology will provide warranty

and service for this unit in accordance with the following

warrants:

Applied Research and Technology, (ART) 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.

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.

ART 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.

ART 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. The warranty terms listed

above are only valid within the United States of America.

For units purchased outside the United States, an

authorized distributor of Applied Research and

Technology will provide service. For information on

warranty and service policies outside of the U.S., please

contact your local distributor.

Please fill in the following information for your reference:

Date of purchase: _________________________

Purchased from: _________________________

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