Adam Hall GmbH · Adam-Hall-Str. 1· 61267 Neu-Anspach · Germany
Tel.: (+49) 60 81 / 94 19 0 · Fax: (+49) 60 81 / 94 19 1000 · eMail: [email protected]
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PLI 04 USB
2-CHANNEL USB DI BOX AND LINE ISOLATOR
SAFETY INFORMATION
1. Please read these instructions carefully.
2. Keep all information and instructions in a safe place.
3. Follow the instructions.
4. Observe all safety warnings. Never remove safety warnings or other information
from the equipment.
5. Use the equipment only in the intended manner and for the intended purpose.
6. Use only sufficiently stable and compatible stands and/or mounts (for fixed
installations). Make certain that wall mounts are properly installed and secured.
Make certain that the equipment is installed securely and cannot fall down.
7. During installation, observe the applicable safety regulations for your country.
8. Never install and operate the equipment near radiators, heat registers, ovens or
other sources of heat. Make certain that the equipment is always installed so that is
cooled sufficiently and cannot overheat.
9. Never place sources of ignition, e.g., burning candles, on the equipment.
10. Ventilation slits must not be blocked.
11. Do not use this equipment in the immediate vicinity of water (does not apply to
special outdoor equipment - in this case, observe the special instructions noted
below. Do not expose this equipment to flammable materials, fluids or gases.
12. Make certain that dripping or splashed water cannot enter the equipment. Do not
place containers filled with liquids, such as vases or drinking vessels, on the equipment.
13. Make certain that objects cannot fall into the device.
14. Use this equipment only with the accessories recommended and intended by
the manufacturer.
15. Open the device for changing the battery, do not modify this equipment.
16. After connecting the equipment, check all cables in order to prevent damage or
accidents, e.g., due to tripping hazards.
17. During transport, make certain that the equipment cannot fall down and possibly
cause property damage and personal injuries.
18. If your equipment is no longer functioning properly, if fluids or objects have gotten
inside the equipment or if it has been damaged in another way, switch it off
immediately and unplug it from the mains outlet (if it is a powered device). This
equipment may only be repaired by authorized, qualified personnel.
19. Clean the equipment using a dry cloth.
20. Comply with all applicable disposal laws in your country. During disposal of
packaging, please separate plastic and paper/cardboard.
21. Plastic bags must be kept out of reach of children.
22. If the equipment has been exposed to strong fluctuations in temperature (for
example, after transport), do not switch it on immediately. Moisture and
condensation could damage the equipment. Do not switch on the equipment until
it has reached room temperature.
23. Do not step on the power cord. Make certain that the power cable does not
become kinked, especially at the mains outlet and/or power adapter and the
equipment connector.
24. When connecting the equipment, make certain that the power cord or power
adapter is always freely accessible. Always disconnect the equipment from the
power supply if the equipment is not in use or if you want to clean the equipment.
Always unplug the power cord and power adapter from the power outlet at the
plug or adapter and not by pulling on the cord. Never touch the power cord and
power adapter with wet hands.
25. To disconnect the equipment from the power mains completely, unplug the power
cord or power adapter from the power outlet.
26. Unplug the power cord and power adapter from the power outlet if there is a risk of
a lightning strike or before extended periods of disuse.
CAUTION:
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
There are no user serviceable parts inside. Have repairs carried out only by qualified
service personnel.
CAUTION – HIGH VOLUME LEVELS WITH AUDIO PRODUCTS!
This equipment is intended for professional use. Therefore, commercial use of this equip -
ment is subject to the respectively applicable national accident prevention rules and
regulations. As a manufacturer, Adam Hall is obligated to notify you formally about the
existence of potential health risks. Hearing damage due to high volume and prolonged
exposure: When in use, this product is capable of producing high sound-pressure levels
(SPL) that can lead to irreversible hearing damage in performers, employees, and audi -
ence members. For this reason, avoid prolonged exposure to volumes in excess of 90 dB.
MANUFACTURER’S WARRANTY & LIMITATION OF LIABILITY
You can find our current warranty conditions and limitation of liability at: https://cdn-
shop.adamhall.com/media/pdf/MANUFACTURERS-DECLARATIONS_PALMER5bb2340e -
52a8c.pdf
To request warranty service for a product, please contact Adam Hall GmbH,
Adam-Hall-Str. 1, 61267 Neu Anspach / Email [email protected] / 49 (0) 6081 / 9419-0
PROPER DISPOSAL OF THIS PRODUCT
(WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT)
(Valid in the European Union and other European countries with waste separation)
This symbol on the product, or the documents accompanying the product, indicates
that this appliance may not be treated as household waste. This is to avoid environmen -
tal damage or personal injury due to uncontrolled waste disposal. Please dispose of
this product separately from other waste and have it recycled to promote sustainable
economic activity.
INTRODUCTION
The PLI04USB is a dedicated interface designed to feed stereo audio from
your computer’s USB port to balanced mic inputs of a mixing console. It
provides high quality 24-bit D/A conversion and supports 44.1, 48 and 96
kHz sample rates. Output is transformer balanced on standard wiring male
XLR connectors with individual isolating switches for the left and right
channels. In addition, the PLI04USB features a headphones output with
level control plus mono summing and ground lift pushbuttons.
WORKING WITH THE PLI04USB
INPUT SIDE
1
USB Input. Connect a quality USB cable from your computer’s USB port
to this input.
2
Sample Rate Indicators. The orange, white and green LEDs indicate the
current sample rates of 44.1, 48 or 96 kHz respectively.
3
Power LED. The red LED lights up when the PLI04USB is powered via the
USB cable.
4
Headphones Output. Connect your headphones to this 3.5 mm mini
TRS jack for monitoring.
5
Headphones Level. This controls the signal volume to your headphones.
6
Mono Sum. This merges the stereo inputs to a mono signal. The head -
phones output [4] and Both XLR outputs [7] then carry the same mono
signal. This way, this unit can also be used as a splitter.
OUTPUT SIDE
7
XLR Outputs L/R. These ouputs carry the balanced mic level stereo
signal or the mono sum when the mono switch
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is pressed.
8
Isolating Switches L/R. Pushing these buttons provides electrical
isolation between computer and mixing console to eliminate hum and/
or computer noise in the audio signal. Most helpful when feeding a mono
sum to
individual destinations.
9
Ground Lift Switch. This pushbutton interrupts the ground connection
between computer and mixing console to eliminate hum and/or computer
noise in the audio signal. Most helpful in single destination stereo use.
SPECIFICATIONS
Product Type:
Line Isolator
Type:
active
Number of Channels:
2
Number of Inputs:
1
Input Connector:
USB
Number of Outputs:
3
Output Connectors:
XLR/m, 3.5 mm TRS
Output Type:
balanced
Output Impedance:
550 Ohms, headphones 43 Ohms
Max. Output Level:
14.4 dBu, headphones 8.5 dBu
Transformer Balanced:
yes
Transformation Ratio:
1:2
Frequency Response:
10 – 41000 Hz
Housing Material:
aluminium
Housing Finish:
powder coated
Width:
148 mm
Depth:
95 mm
Height:
44 mm
Weight:
0.68 kg
