DAPAudio SC-20 User manual

SC-20 Stereo USB Soundcard
Highlite International B.V. –Vestastraat 2 –6468 EX –Kerkrade –the Netherlands
Product code: D1529
USER MANUAL
ENGLISH
V1

1
SC-20 Stereo USB Soundcard
Product code: D1529
Preface
Thank you for purchasing this DAP product.
The purpose of this user manual is to provide instructions for the correct and safe use of this product.
Keep the user manual for future reference as it is an integral part of the product. The user manual shall be
stored at an easily accessible location.
This user manual contains information concerning:
●Safety instructions
●Installation and operation of the device
●Intended and non-intended use of the device
●Maintenance procedures
●Troubleshooting
●Transport, storage and disposal of the device
Non-observance of the instructions in this user manual may result in serious injuries and damage of
property.
©2022 DAP. All rights reserved.
No part of this document may be copied, published or otherwise reproduced without the prior written
consent of Highlite International.
Design and product specifications are subject to change without prior notice.
For the latest version of this document or other language versions, please visit our website
www.highlite.com or contact us at [e-mail].
Highlite International and its authorized service providers are not liable for any injury, damage, direct or
indirect loss, consequential or economic loss or any other loss arising from the use of, or inability to use or
reliance on the information contained in this document.

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SC-20 Stereo USB Soundcard
Product code: D1529
Table of contents
1. Introduction..........................................................................................................................................................3
Before Using the Product ..................................................................................................................................3
Intended Use .......................................................................................................................................................3
Product Lifespan.................................................................................................................................................3
Text Conventions ................................................................................................................................................3
Symbols and Signal Words................................................................................................................................4
Symbols on the Information Label ..................................................................................................................4
2. Safety ....................................................................................................................................................................5
Warnings and Safety Instructions ....................................................................................................................5
Requirements for the User.................................................................................................................................6
3. Description of the Device...................................................................................................................................7
Front View ............................................................................................................................................................7
Back View ............................................................................................................................................................7
Product Specifications ......................................................................................................................................8
Dimensions...........................................................................................................................................................8
4. Installation ............................................................................................................................................................9
Ambient Conditions ...........................................................................................................................................9
Usage....................................................................................................................................................................9
Installation of the Device ..................................................................................................................................9
5. Setup and Operation ..........................................................................................................................................9
Safety Instructions for Operation.....................................................................................................................9
Connecting External Devices ..........................................................................................................................9
Connecting Headphones ................................................................................................................................9
Setting Volume ...................................................................................................................................................9
Setting Ground Lift..............................................................................................................................................9
Setup Example ..................................................................................................................................................10
Start-up...............................................................................................................................................................11
6. Troubleshooting .................................................................................................................................................11
7. Maintenance .....................................................................................................................................................12
Preventive Maintenance................................................................................................................................12
Basic Cleaning Instructions ...................................................................................................................12
Corrective Maintenance................................................................................................................................12
8. Deinstallation, Transportation and Storage ....................................................................................................12
9. Disposal ..............................................................................................................................................................13
10. Approval.............................................................................................................................................................13

3
SC-20 Stereo USB Soundcard
Product code: D1529
1. Introduction
Before Using the Product
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
After unpacking, check the contents of the box. If any parts are missing or damaged, contact your
Highlite International dealer.
Your shipment includes:
●DAP SC-20 Stereo USB Soundcard
●USB A to USB B cable (cable length: 1,3 m)
●User manual
Fig. 01
Intended Use
This device is intended for use as a 2-channel USB-Audio interface. It is suitable only for indoor installation.
Any other use, not mentioned under intended use, is regarded as non-intended and incorrect use.
Product Lifespan
This device is not designed for permanent operation. Turn the device off when the device is not in
operation. This will reduce the wear and will improve the device’s lifespan.
Text Conventions
Throughout the user manual the following text conventions are used:
●Buttons: All buttons are in bold lettering, for example “Press the UP/DOWN buttons”
●References: References to chapters and parts of the device are in bold lettering, for example:
“Refer to 2. Safety”, “turn the adjustment screw (02)”
●0–255: Defines a range of values
●Notes: Note: (in bold lettering) is followed by useful information or tips

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SC-20 Stereo USB Soundcard
Product code: D1529
Symbols and Signal Words
Safety notes and warnings are indicated throughout the user manual by safety signs.
Always follow the instructions provided in this user manual.
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates an imminently hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
Attention
Indicates important information for the correct operation and use of the
product.
Important
Read and observe the instructions in this document.
Provides important information about the disposal of this product.
Symbols on the Information Label
This product is provided with an information label. The information label is located on the bottom plate of
the device.
The information label contains the following symbols:
This device is designed for indoor use.
This device shall not be treated as household waste.

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SC-20 Stereo USB Soundcard
Product code: D1529
2. Safety
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
Warnings and Safety Instructions
DANGER
Danger for children
For adult use only. The device must be installed beyond the reach of children.
●Do not leave various parts of the packaging (plastic bags, polystyrene foam, nails, etc.) within
children’s reach. Packaging material is a potential source of danger for children.
Attention
General safety
●Do not switch the device on and off in short intervals. This decreases the device’s life.
●Do not shake the device. Avoid brute force when installing or operating the device.
●If the device is exposed to extreme temperature variations (e.g. after transportation), do not switch it
on immediately. Let the device reach room temperature before switching it on, otherwise it may be
damaged by the formed condensation.
●If the device fails to work properly, discontinue the use immediately.
Attention
This device shall be used only for the purposes it is designed for.
This device is intended for use as a 2-channel USB-Audio interface. It is suitable only for indoor installation.
Any incorrect use may lead to hazardous situations and result in injuries and material damage.
This device does not contain user-serviceable parts. Unauthorized modifications to the device will render
the warranty void. Such modifications may result in injuries and material damage.
Attention
Do not expose the device to conditions that exceed the rated IP class conditions.
This device is IP20 rated. IP (Ingress Protection) 20 class provides protection against solid objects greater
than 12 mm, such as fingers, and no protection against harmful ingress of water.

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SC-20 Stereo USB Soundcard
Product code: D1529
Requirements for the User
This product may be used by ordinary persons. Maintenance and installation may be carried by ordinary
persons. Service shall be carried out only by instructed or skilled persons. Contact your Highlite
International dealer for more information.
Instructed persons have been instructed and trained by a skilled person, or are supervised by a skilled
person, for specific tasks and work activities associated with the service of this product, so that they can
identify risks and take precautions to avoid them.
Skilled persons have training or experience, which enables them to recognize risks and to avoid hazards
associated with the service of this product.
Ordinary persons are all persons other than instructed persons and skilled persons. Ordinary persons
include not only users of the product but also any other persons that may have access to the device or
who may be in the vicinity of the device.

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SC-20 Stereo USB Soundcard
Product code: D1529
3. Description of the Device
The DAP SC-20 Stereo USB Soundcard is a 2-channel USB-Audio interface with XLR and (mini)jack (3,5 mm
and 6,3 mm) headphone output, suitable for sending of stereo PC/MAC audio signals to a mixer, speaker
set or other audio device. The device is powered via USB and does not need any additional power
supply or driver installation. You can adjust the headphones and XLR output volume. The device has a
built-in, low-noise preamp for a clear sound.
Front View
Fig. 02
01) 3,5 mm TRS balanced mini jack headphones IN
02) 6,3 mm TS balanced jack headphones IN
03) Headphones volume control
04) Output volume control
05) LED power indicator (Green)
Back View
Fig. 03
06) USB B connector IN
07) Ground/earth screw
08) Lift/Ground button (output 2)
09) 3-pin XLR line level connector OUT (output 2)
10) Lift/Ground button (output 1)
11) 3-pin XLR line level connector OUT (output 1)

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SC-20 Stereo USB Soundcard
Product code: D1529
Product Specifications
Model:
DAP SC-20 Stereo USB Soundcard
Electrical:
Input voltage:
5 V DC
Power consumption:
1 W
Physical:
Dimensions:
155 x 135 x 53 mm (LxWxH)
Weight:
0,67 kg
Audio specifications:
Frequency response:
20 Hz –20 kHz
Software specifications:
Supported operating systems:
macOS, Windows
Connections:
Power connection:
USB B connector
Data connection:
USB B connector
Audio connections:
2 x 3-pin XLR connector OUT
Headphones outputs:
1 x TRS balanced mini jack 3,5 mm
1 x TS balanced jack 6,3 mm
Construction:
Housing:
Aluminum, Iron
Color:
Black
IP rating:
IP20
Dimensions
Fig. 04

9
SC-20 Stereo USB Soundcard
Product code: D1529
4. Installation
Ambient Conditions
The device can be used only indoors.
Usage
The device can be positioned on a flat surface.
Installation of the Device
The device is delivered with a USB A to USB B cable.
Use the supplied USB cable to connect the USB port on the PC/laptop to the USB input connector (06) on
the device. The LED power indicator (05) will turn green.
Your PC/laptop will automatically install the necessary drivers.
5. Setup and Operation
Safety Instructions for Operation
Attention
This device must be used only for the purposes it is designed for.
This device is intended for use as a 2-channel USB-Audio interface. It is suitable only for indoor installation.
It is not suitable for households.
Any other use, not mentioned under intended use, is regarded as non-intended and incorrect use.
Connecting External Devices
Use 3-pin XLR cables to connect line level devices (e.g. speakers) to both 3-pin XLR output connectors
(09/11).
Connecting Headphones
Connect headphones to the mini jack input connector (01) or the jack input connector (02).
Setting Volume
Turn the headphones volume control (03) to the left/right to decrease/increase the headphones volume.
Turn the output volume control (04) to the left/right to decrease/increase the output volume.
Setting Ground Lift
Use ground lift to eliminate hum and buzz. Use this function to interrupt ground loops and stop current
flow through the cable shield between devices.
Press the Lift/Ground buttons (08/10) and set them to LIFT or GROUND. Check which of the 2 settings
provides better sound quality in your situation.
The switches disconnect pins # 1 on the 3-pin XLR output connectors (09/11) (attached to the braid or foil
shield in the cables), which function as the ground points.

10
SC-20 Stereo USB Soundcard
Product code: D1529
Setup Example
Fig. 05

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SC-20 Stereo USB Soundcard
Product code: D1529
Start-up
To operate the device:
Connect the device to the PC/laptop. See 4.3. Installation of the Device on page 9 for more
information. See 5.6. Setup Example on page 10.
Connect external devices (e.g. speakers). See the 5.2. Connecting External Devices on page 9 for
more information. See 5.6. Setup Example on page 10.
Connect headphones. See the 5.3. Connecting Headphones on page 9 for more information. See
5.6. Setup Example on page 10.
Turn the external devices on.
Turn the PC/laptop on.
Start the desired audio software/audio source on your PC/laptop.
Set the volume of the headphones and of the output. See 5.4. Setting Volume on page 9 for more
information.
Set ground lift. See 5.5. Setting Ground Lift on page 9 for more information.
Attention
This device may cause faster battery depletion in laptops.
When operating this device with a laptop, it is recommended that the laptop be connected to an
appropriate power supply with its battery charger.
6. Troubleshooting
This troubleshooting guide contains solutions to problems which can be carried out by an ordinary
person. The device does not contain user-serviceable parts.
Unauthorized modifications to the device will render the warranty void. Such modifications may result in
injuries and material damage.
Refer servicing to instructed or skilled persons. Contact your Highlite International dealer in case the
solution is not described in the table.
Problem
Probable cause(s)
Solution
The device does not
function at all and/or
the device does not
appear on the list of
available devices on
the PC screen)
The device is not properly
connected to the PC
●Check if the USB cable is properly
connected to the PC
●Replace the USB cable
No sound
Bad connections
●Check if the connections between the
devices are correct
●Check if headphones are connected
to the device

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SC-20 Stereo USB Soundcard
Product code: D1529
7. Maintenance
Preventive Maintenance
Attention
Before use, examine the device visually for any defects.
Basic Cleaning Instructions
To clean the device, follow the steps below:
Switch the device off.
Clean the device with a soft, lint-free cloth.
Attention
●Do not immerse the device in liquid.
●Do not use alcohol or solvents.
Corrective Maintenance
The device does not contain user-serviceable parts. Do not open the device and do not modify the
device.
Refer repairs and servicing to instructed or skilled persons. Contact your Highlite International dealer for
more information.
8. Deinstallation, Transportation and Storage
●Use the original packaging to transport the device, if possible.
●Clean the device before storing. Follow the cleaning instructions in chapter 7.1.1. Basic Cleaning
Instructions on page 12.
●Store the device in the original packaging, if possible.

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SC-20 Stereo USB Soundcard
Product code: D1529
9. Disposal
Correct disposal of this product
Waste Electrical and Electronic Equipment
This symbol on the product, its packaging or documents indicates that the product
shall not be treated as household waste. Dispose of this product by handing it to the
respective collection point for recycling of electrical and electronic equipment. This
is to avoid environmental damage or personal injury due to uncontrolled waste
disposal. For more detailed information about recycling of this product contact the
local authorities or the authorized dealer.
10. Approval
Check the respective product page on the website of Highlite International (www.highlite.com) for an
available declaration of conformity.

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SC-20 Stereo USB Soundcard
Product code: D1529

©2022 DAP