Tascam 0US-4x4TP User manual

D01236020G
US-2x2
US-4x4
USB Audio/MIDI Interface
REFERENCE MANUAL
Before connecting this unit to a computer, you must download and install dedicated software on the computer.

2 TASCAM US-2x2/US-4x4
Contents
1 – Introduction ..............................................3
Features .......................................................................................... 3
Conventions used in this manual.......................................... 3
Trademarks and copyrights..................................................... 3
Using the TEAC Global Site...................................................... 3
2 – Names and functions of parts ..................4
Front panel .................................................................................... 4
Rear panel...................................................................................... 5
3 – Installation ................................................6
System requirements................................................................. 6
Windows ............................................................................6
Mac OS X ............................................................................ 6
Apple iOS devices........................................................... 6
Supported audio drivers..............................................6
Installing the dedicated software ......................................... 6
Installing the Windows dedicated software.........6
Installing the Mac dedicated software ................... 7
Working with Gatekeeper............................................8
Uninstalling the dedicated software.................................... 9
Uninstalling the Windows dedicated software ... 9
Uninstalling the Mac dedicated software .............9
4 – Preparation..............................................10
Connecting the power ............................................................10
Changing the outlet plug (US-4x4 only) ..............10
5 – Connections.............................................11
Connecting other equipment .............................................. 11
Computer connections ........................................................... 11
Audio connections.................................................................... 11
Microphones ..................................................................11
Guitar.................................................................................11
Electronic instruments and other audio
equipment.......................................................................12
Analog record players.................................................12
Monitor speakers ..........................................................12
Headphones ...................................................................12
MIDI connections ......................................................................12
Connecting with iOS devices................................................12
6 – Using the Settings Panel ........................13
Opening the Settings Panel ..................................................13
Windows ..........................................................................13
Mac.....................................................................................13
Windows Settings Panel overview......................................13
HOME page.....................................................................13
Settings page .................................................................14
Custom page ..................................................................15
Mac Settings Panel overview................................................16
Notification function................................................................17
Automatic Settings Panel and firmware update function.....17
7 – Application Guide ...................................18
DAW software.............................................................................18
Bundled DAW software ..............................................18
Other DAW software....................................................18
Driver settings for specific purposes (Windows only).18
Windows Media Player............................................................18
Mac OS X and iTunes................................................................19
8– Standalone Mode....................................20
Overview ......................................................................................20
Settings in standalone mode................................................20
Settings Panel settings ...............................................20
9 – MIDI Implementation Chart ...................21
10 – Troubleshooting ...................................22
11 – Specifications ........................................24
Audio resolution........................................................................24
Input/output ratings ................................................................24
Analog inputs.................................................................24
Analog outputs..............................................................24
Control input/output ratings....................................24
Audio performance ..................................................................24
Computer system requirements..........................................25
Windows ..........................................................................25
Mac.....................................................................................25
iOS devices ......................................................................25
Supported audio drivers............................................25
General..........................................................................................25
Dimensional drawings.............................................................25

TASCAM US-2x2/US-4x4 3
1 – Introduction
Features
o24-bit/96kHz audio interface
oMultiple1analog signals (L/R) can be input simultaneously
and output to a computer by USB at the same time
oMultiple XLR mic inputs (balanced2) and standard TRS jack
inputs (balanced3/unbalanced4)
oElectric guitars and basses, for example, can be connected to
the standard TS jack inputs when the MIC/LINE INST switch
is set to INST (instrument input)5
oBalanced stereo line6and headphone7outputs
oMIDI IN and OUT connectors
oDirect monitoring function allows input monitoring with low
latency
oUSB port (USB-B type, USB 2.0 standard)
Use the included USB cable to connect the unit to a
computer. To connect to an iOS device, use a Lightning to
USB Camera Adapter made by Apple Inc.
CAUTION
When using a US-2x2 that is connected to a computer, it will
operate using USB bus power.
Since the power supply is insufficient when using the
unit connected by USB to an iOS device, however, please
purchase a separate external power supply device for this
use. (When using a US-4x4, always connect the included AC
adapter.)
oSoftware mixer function convenient for live broadcasting and
karaoke (for Windows)
oDAW software included
1US-2x2: 2 inputs, US-4x4: 4 inputs
2XLR-3-31 equivalent
US-2x2: 2 inputs, US-4x4: 4 inputs
The US-2x2 has XLR/TRS combo jacks
3Standard 6.3mm (1/4") TRS stereo jack
(MIC/LINE INST switch set to MIC/LINE)
US-2x2: 2 inputs, US-4x4: 4 inputs
4Standard 6.3mm (1/4") TRS stereo jack
(MIC/LINE INST switch set to INST)
US-2x2/US-4x4: both 2 inputs
5Only IN1-IN2 on the US-4x4
6Standard 6.3mm (1/4") TRS stereo jack
US-2x2: 2 outputs, US-4x4: 4 outputs
7Standard 6.3mm (1/4") stereo jack
US-2x2: 1 output, US-4x4: 2 outputs
8Note about computer operation
If you are unsure about anything related to the basic operation
of a computer when it is mentioned in an explanation in this
manual, please refer to the computer operation manual.
To use this unit with a computer, dedicated software must be
installed on the computer.
For details about software installation, see “Installing the
dedicated software” on page 6.
Conventions used in this manual
The following conventions are used in this manual.
oButtons, connectors and other physical parts of this unit are
written using a bold font like this: PHONES knob.
oInformation shown on the computer display is written like
this “OK”.
oAdditional information is provided as necessary as tips, notes
and cautions.
TIP
These are tips about how to use the unit.
NOTE
These provide additional explanations and describe special
cases.
CAUTION
Failure to follow these instructions could result in injury,
damage to equipment or lost recording data, for example.
Trademarks and copyrights
oTASCAM is a trademark of TEAC CORPORATION, registered in
the U.S. and other countries.
oMicrosoft, Windows, Windows Vista and Windows Media
are either registered trademarks or trademarks of Microsoft
Corporation in the United States and/or other countries.
oApple, Mac, OS X and macOS are trademarks of Apple Inc.
oIOS is a trademark or registered trademark of Cisco in the U.S.
and other countries and is used under license.
oASIO is a trademark of Steinberg Media Technologies GmbH.
oOther company names, product names and logos in this
document are the trademarks or registered trademarks of
their respective owners.
Using the TEAC Global Site
You can download this Reference Manual and the Owner’s
Manual necessary for this unit from the TEAC Global Site (http://
teac-global.com/).
1. Open the TEAC Global Site (http://teac-global.com/).
2. In the TASCAM Downloads section, click the desired
language to open the Downloads website page for that
language.
NOTE
If the desired language does not appear, click Other
Languages.
3. Click the product name in the “Search by Model Name”
section to open the Downloads page for that product.
4. Select and download the Owner’s Manual that are needed.

4 TASCAM US-2x2/US-4x4
2 – Names and functions of parts
Front panel
w78 90q
12 3456
7
123 4 5 6
80qw
US-4x4 front panel US-2x2 front panel
1SIG indicators
The SIG indicators light green when signals (of at least −32
dBFS) are input through the IN1/IN2 jacks (and US-4x4 IN3/
IN4 jacks).
2PEAK indicators
The PEAK indicators light red when signals that are about
to distort (−1 dBFS or higher) are input through the IN1/IN2
jacks (and US-4x4 IN3/IN4 jacks).
3GAIN knobs
Use to adjust the input levels of the IN1/IN2 jacks (and
US-4x4 IN3/IN4 jacks).
Adjust these so that the PEAK indicators do not light red.
4 USB indicator
This lights when the USB connection is working.
5LINE OUT knob
Use to adjust the output level of the LINE OUT 1-2 jacks.
6PHONES knob
Use to adjust the output level of the PHONES jack ( 1 and
2 jacks on US-4x4).
CAUTION
Before connecting headphones, minimize the volume with
the PHONES knob. Failure to do so might cause sudden loud
noises, which could harm your hearing or result in other
trouble.
7Phantom power switch/indicator
Use this switch to provide +48V phantom power to the IN1/
IN2 jacks (and US-4x4 IN3/IN4 jacks).
The indicator lights when the phantom power switch is set to
+48V.
CAUTION
• Set the LINE OUT and PHONES knobs to their minimum
values before changing the phantom power setting.
Depending on the connected mics, sudden loud noises from
monitoring equipment could occur, and this could damage
the equipment or harm hearing.
• The phantom power switch changes the setting for both
US-2x2 input channels (all four US-4x4 input channels)
simultaneously.
• Do not connect or disconnect mics when the phantom
power switch is set to +48V. Doing so could cause a
loud noise and might damage this unit and connected
equipment.
• Set the phantom power switch to +48V only when using a
condenser microphone that requires phantom power.
Turning phantom power +48V when a dynamic mic or other
mic that does not require it is connected could damage this
unit and connected equipment.
• When using condenser mics that require phantom power
and dynamic mics together, be sure to use balanced
dynamic mics. Unbalanced dynamic mics cannot be used
when phantom power is enabled
• Supplying phantom power to some ribbon mics will break
them. If you are unsure, do not supply phantom power to a
ribbon mic.
• If you connect this unit to a laptop computer that is running
on battery power and set the phantom power switch to
+48V, the computer battery charge will be consumed more
quickly.
8IN1/IN2 (BALANCED/UNBALANCED) jacks
These input jacks are XLR/TRS combo jacks on the US-2x2
and separate XLR and standard TRS jacks on the US-4x4.
Use the MIC/LINE INST switches on the front of the unit to
enable balanced line (MIC/LINE) input or unbalanced (INST)
input for the standard TRS jacks.
When directly connecting a guitar, bass or other instrument,
set the MIC/LINE INST switch to INST.
9IN3/IN4 (BALANCED) jacks
These XLR analog mic input and standard line level TRS jacks
are balanced input jacks.
NOTE
On the US-4x4, the IN1-IN4 (8, 9) inputs each have two
jacks (XLR and TRS). Do not input signals through both
jacks of the same input at the same time. If signals are
input through both at the same time, neither signal will be
received properly.
0MIC/LINE INST switches
Set according to the IN1/IN2 jack input sources.
Set to MIC/LINE when connecting electronic instruments,
audio devices, mics and similar equipment.
Set to INST when connecting an electric guitar, electric bass
or other equipment with high output impedance.
qMONITOR BALANCE knob
When recording input signals, use this to adjust the
monitoring balance between the signals from this unit's
input jacks and from the computer.
The volume of signals input through this unit's input jacks
increase the more the MONITOR BALANCE knob is set to the
left (INPUT) and signals output from the computer increase
the more this is set to the right (COMPUTER).
This knob does not affect the recording level of input signals.

TASCAM US-2x2/US-4x4 5
2 – Names and functions of parts
wPHONES jack
Use this standard stereo phone jack to connect stereo
headphones( 1 and 2 jacks on US-4x4). Each of these jacks
outputs the same signal as the LINE OUT 1–2 jacks. Use an
adapter to connect headphones with a mini plug.
NOTE
The same signals are output from both the 1 and 2 jacks
of the US-4x4.
Rear panel
eryt iert y u
US-4x4 rear panel US-2x2 rear panel
eLINE OUT (BALANCED) jacks
These standard TRS jacks are analog line outputs.
The signals output from the LINE OUT 1–2 jacks (1–4 jacks
on US-4x4) can be set in the Settings Panel. For details, See
“3 Line Outputs items”in the“Settings page”section on page
14 for details.
rMIDI OUT connector
This 5-pin DIN is a standard MIDI output connector.
This outputs MIDI signals.
tMIDI IN connector
This 5-pin DIN is a standard MIDI input connector.
Use this to input MIDI signals.
yUSB port
Use the included USB cable to connect the unit to a
computer.
(Supports USB 2.0.)
CAUTION
• When using a US-2x2 that is connected to a computer, it will
receive power from the computer's USB port. Depending
on the computer, the USB port might not be able to supply
enough power to operate the unit.
• When connected to a USB 3.0 port, it will function in High
Speed mode equivalent to USB 2.0 (480 Mbps maximum).
• After waking a computer from suspend (sleep) mode, if the
unit does not operate properly, turn it off and turn it on
again or disconnect and reconnect the USB cable.
uDC IN 5V connector (US-2x2 only)
To use this unit when connected to an iOS device, connect
an external power supply device here. See “Connecting the
power” on page 10 for details.
NOTE
When using a US-2x2 that is connected to a computer, it will
receive power from the computer's USB port, so a dedicated
AC adapter (sold separately) should not be necessary.
Depending on the computer, however, the USB port might
not be able to supply enough power to operate the unit.
In this case, use a dedicated AC adapter (sold separately).
iDC IN 12V connector (US-4x4 only)
Connect the included DC12V AC adapter (PS-P1220E) here.

6 TASCAM US-2x2/US-4x4
3 – Installation
System requirements
For the latest information about supported operating systems,
visit the TEAC Global Site (http://teac-global.com/).
Windows
8Supported operating systems
Windows 10 32-bit
Windows 10 64-bit
Windows 8.1 32-bit
Windows 8.1 64-bit
Windows 7 32-bit SP1 or later
Windows 7 64-bit SP1 or later
(Windows 8, Windows Vista and Windows XP are not
supported)
8Computer hardware requirements
Windows computer with a USB 2.0 port
8CPU/processor speed
2 GHz or faster dual core processor (x86)
8Memory
2 GB or more
CAUTION
Operation of this unit was confirmed using standard
computers that meet the above requirements. This does
not guarantee operation with all computers that meet the
above requirements. Even computers that meet the same
system requirements might have processing capabilities
that differ according to their settings and other operating
conditions
Mac OS X
8Supported operating systems
macOS Sierra (10.12 or later)
OS X El Capitan (10.11 or later)
OS X Yosemite (10.10 or later)
OS X Mavericks (10.9.1 or later)
OS X Mountain Lion (10.8.4 or later)
8Computer hardware requirements
Mac with a USB 2.0 port
8CPU/processor speed
2 GHz or faster dual core processor
8Memory
2 GB or more
Apple iOS devices
8Supported operating systems
iOS 7 or later
Supported audio drivers
Windows: ASIO2.0, WDM, MIDI
Mac: Core Audio, Core MIDI
Installing the dedicated software
To use this unit with a computer, dedicated software must be
installed on the computer.
The dedicated software might be updated at any time.
Download the latest software for the operating system you are
using from the TEAC Global Site (http://teac-global.com/).
oOn a Windows computer, this will install the Windows driver
and Settings Panel application.
oInstalling the dedicated software on a Mac will install only
the Mac Settings Panel application.
The standard OS driver will be used.
oWhen using this unit with an iOS device, the standard OS
driver will be used, so there is no need to install dedicated
software.
CAUTION
Before starting to install software, quit other applications.
Installing the Windows dedicated software
NOTE
• Complete installation of the Windows dedicated software
on the computer before connecting the unit to it with the
USB cable.
• If you connected the unit to the computer using the USB
cable before installing the Windows dedicated software
and the “Found New Hardware Wizard” launched, close the
Wizard and disconnect the USB cable.
8Windows dedicated software installation
procedures
1. Download the latest Windows dedicated software for the
operating system you are using from the TEAC Global Site
(http://teac-global.com/) and save it on the computer to be
used with the unit.
2. Uncompress the saved software (zip file) on the computer
desktop or another location.
3. Double-click the “TASCAM_US-2x2_US-4x4_Installer_x.
xx.exe” file in the folder that appears after uncompression to
automatically launch the installation software.
CAUTION
If you open a zip file without decompressing it and double-
click the “TASCAM_US-2x2_US-4x4_Installer_x.xx.exe” file in
the folder that opens, installation will not start. Right-click
the zip file and select “Extract All”, for example, to decom-
press it and then try again.
4. When a Security Warning or User Account Control screen
appears, click the “Yes” button.
5. When the Setup Wizard screen appears, click the “Next”
button.

TASCAM US-2x2/US-4x4 7
3 – Installation
6. Read the contents of the License Agreement, and select“I
accept the agreement” if you agree to the terms. Then, click
the “Next” button.
7. Next, click the “Install” button.
8. Next, click the “Install” button to start installation.
The following screen appears when installation has
completed. Click the“Finish”button.
This quits the installer and launches the Windows Settings
Panel.
NOTE
The first time you connect the unit by USB to the computer
after installing the software, installation of the device driver
will be executed. Some time might be necessary before
the unit is recognized because Windows Update will be
automatically searched at this time. If the unit is still not
recognized after a while, open the software installation
screen from the notification area at the bottom right of the
computer display, and click “Skip obtaining driver software
from Windows Update” to stop the search.
Installing the Mac dedicated software
NOTE
• Before starting to install the Mac dedicated software, quit
other applications.
• While installing the Mac dedicated software, a warning
message like this might appear: “US-2x2_US-4x4 Installer.
dmg” can't be opened because it was not downloaded from
the Mac App Store.If a message like this appears, follow the
instructions in “Working with Gatekeeper” on page 8
and then proceed with the installation.
8Mac dedicated software installation procedures
1. Download the Mac dedicated software for the operating
system you are using from the TEAC Global Site (http://
teac-global.com/) and save it on the computer to be used
with the unit.
2. Double-click “US-2x2_US-4x4 Installer.dmg”, which is the
saved disk image file for the Mac dedicated software, and
double-click “US-2x2_US-4x4 Installer.pkg” inside the folder
that opens.
NOTE
Depending on the computer’s settings, the downloaded zip
file might not have opened automatically. In this case, open
the zip file first and then double-click the disk image file.
3. When the installer starts, click the “Continue” button.
4. Next, select the desired language and click the “Continue”
button.

8 TASCAM US-2x2/US-4x4
3 – Installation
5. Click the “Read License”button and check the contents
of the Software License Agreement. If you agree to the
contents of the license, click “Agree”.
Then, click the “Next” button.
6. Next, click the “Install” button to start installation.
7. The following screen appears when installation has
completed.
Click the “Close” button.
Working with Gatekeeper
When using Mac OS X, depending on the Gatekeeper security
function setting, a warning message might appear during
installation.
The solution depends on the warning message shown.
See the following explanations for details.
iWhen the Gatekeeper setting is “Allow applications
downloaded from: the Mac App Store”
The following security warning might be shown:“US-2x2_
US-4x4 Installer.dmg” can't be opened because it was not
downloaded from the Mac App Store.”
In this case, click the OK button to close the message. Then,
control-click (or right-click) the file and click “Open”.
Click the “Open”button if the following security warning
message appears: “US-2x2_US-4x4 Installer.dmg” can't be
opened because it was not downloaded from the Mac App
Store. Are you sure you want to open it?”
This warning message might also appear when the
Gatekeeper setting is something other than “Allow applica-
tions downloaded from: the Mac App Store”.
The security warning message “US-2x2_US-4x4 Installer.dmg”
can't be opened because it was not downloaded from the
Mac App Store.” could appear again, and you might not be
able to open the file.
In this case, copy the file from the folder where it is to the
desktop or another folder, and then open it. Alternatively,
change the Gatekeeper settings to “Allow applications
downloaded from: the Mac App Store and identified devel-
opers”and try opening it again.
iWhen the Gatekeeper setting is not “Allow applications
downloaded from: the Mac App Store”
‘“US-2x2_US-4x4 Installer.dmg” is an application downloaded
from the Internet. Are you sure you want to open it?” might
appear as a security warning message. In this case, click the
“Open” button.

TASCAM US-2x2/US-4x4 9
3 – Installation
oChanging the Gatekeeper setting
The Gatekeeper setting can be changed using the “Allow
applications downloaded from:”item on the“General” page
of the “Security & Privacy” pane of the System Preferences.
To change this, you must click the lock icon ( ) at the bottom
left and enter a password to unlock the settings.
This setting will lock again when you click the“Show All”
button at the top left of the window to close the open pane
or when you quit the System Preferences by, for example,
clicking the round button at the top left corner of the
window ( ) or typing command-Q.
CAUTION
Changing the Gatekeeper settings could result in security
risks.
If you changed the Gatekeeper setting to decrease security
(use one of the lower settings), set it back to the original
setting after updating the software and/or firmware. (When
installing a firmware update immediately after software, do
this after installing the firmware update.)
Uninstalling the dedicated software
NOTE
Normally, there is no need to uninstall the dedicated
software. Follow these procedures if a problem occurs or
you no longer intend to use the unit with the computer.
Uninstalling the Windows dedicated
software
Uninstalling from the Programs and Features Control Panel
1. From the Start menu, open the Control Panel and launch
Programs and Features.
NOTE
• In Windows 10, right-click the Start button and click Control
Panel when it appears.
• In Windows 8.1, right-click the button at the bottom left of
the Start screen and click Control Panel on the Apps screen.
2. If “View by:” is set to “Category”, click “Uninstall a program”
under the “Program” item.
If “View by:” is set to “Large icons” or “Small icons”, click
“Programs and Features”.
3. Select and double-click “TASCAM US-2x2 & US-4x4 Driver”
and “TASCAM US-2x2 & US-4x4 Software Mixer” in the list.
4. Then, follow the instructions that appear on the screen.
Uninstalling the Mac dedicated software
Delete “US-2x2_US-4x4_Settings Panel” from the Applications
folder to complete uninstallation.

10 TASCAM US-2x2/US-4x4
Connecting the power
8US-4x4
Connect the power to the US-4x4 as shown below.
oThe AC adapter for the US-4x4 includes two types of outlet
plugs. Attach the type of plug that matches the power outlet
that you are using.
Power outlet
PS-P1220E (included) DC plug
8US-2x2
Normally, when a US-2x2 is connected to a computer, it will
operate using USB bus power, so a separate power supply is
not necessary. To power this unit when it is connected to an
iOS device, however, you must connect a TASCAM PS-P520E AC
adapter, TASCAM BP-6AA external battery pack or other power
supply device to the DC IN 5V connector. In this case, connect
the power source to the unit as shown below.
DC plug
Power outlet
TASCAM PS-P520E or
BP-6AA
CAUTION
• Always use the included PS-P1220E AC adapter with the
US-4x4.
• We highly recommend using a PS-P520E AC adapter or
BP-6AA battery pack (both sold separately) with the US-2x2.
When using another external power supply device, use one
with the following specifications.
• Power supply voltage: 5 V
• Power supply current: 700 mA or more
Using a power supply device with specifications other than
the above could cause malfunction, overheating, fire or
other problems. If trouble should occur, stop using the unit
and contact the retailer where you purchased it or a TEAC
service center to request repair.
Changing the outlet plug (US-4x4 only)
$%
2
1
5
3
4
1Move the latch on the AC adapter in the direction of the
arrow.
2Pull off the outlet plug.
3Replace it with the other outlet plug (A or B).
4Move the latch on the AC adapter in the direction of the
arrow again.
5Attach the outlet plug to the AC adapter.
This completes changing the outlet plug.
After changing the outlet plug, confirm that is not loose or
crooked and that everything is normal before plugging it
into an outlet
CAUTION
Do not use the adapter if there is anything abnormal about
the plug after changing it. Use when the plug is abnormal
could cause fire or electric shock. Contact the retailer where
you purchased the unit or a TEAC service center (on the back
cover) to request repair.
4 – Preparation