US-122MK" /US-144MK" Release Notes

Updates

The latest driver and firmware versions for these units are as follows. Windows Driver: 2.03 update (32-bit and 64-bit editions) Firmware: 2.03 update (32-bit and 64-bit editions) Mac OS X Driver: 2.00 (no new update) Firmware: 2.01 (no new update) Always ensure that you are running the latest driver software and US-122MKII or US-144MKII firmware by visiting TASCAMs web site (http://tascam.com/).

New Features

For Windows Driver
Version 2.03 (Windows 32-bit and 64-bit editions)
In Windows Vista and Windows 7, 24 bit length can now be selected in the Sound settings.
Version 2.02 (only for Windows 64-bit editions)
This version supports 64-bit editions of Windows 7.

CAUTION

Owner's Manual Addendum
Owner's Manual Correction
US-122MKII Owner's Manual, Page 21 US-144MKII Owner's Manual, Page 23 Incorrect: When using Windows Media Player, if the MIDI music playback output destination (default device) is set to Microsoft GS Wavetable SW Synth in the Sounds and Audio Devices part of the Control Panel, you can listen to MIDI performances through this units LINE OUT and PHONES output. Correct: When using Windows Media Player, if the MIDI music playback output destination (default device) is set to Microsoft GS Wavetable SW Synth in the Sounds and Audio Devices part of the Control Panel, you cannot listen to MIDI performances through this units LINE OUT and PHONES output.
This driver cannot be used with Windows 32-bit editions. If you are using a Windows 32-bit edition, use the Version 2.00 (32-bit edition) driver.
Version 2.00 (only for Windows 32-bit editions)
The software is now compatible with 32-bit editions of Windows 7, Windows Vista SP2 and Windows XP SP3.
Please use this driver with above Windows Service Pack. This driver cannot be used with Windows 64-bit editions. If you are using a Windows 64-bit edition, use the Version 2.02 (64-bit edition) driver.

For Mac OS X Driver

Version 2.00 Version 2.00 supports Mac OS X v10.6 Snow Leopard (32bit and 64-bit kernel modes)
Version 2.00 is for Mac OS X v10.5.8 and v10.6 or later, and Version 1.13 is for Mac OS X v10.3.9 and v10.4.11.
TASCAM US-122mkII/US-144mkII
Firmware: 2.03, Windows driver: 2.03 (32 bit)/2.03 (64 bit), Mac OS X driver: 2.00

Release Notes

Maintenance Items

For Firmware

Version 2.03 Version 2.00 Some caution screens appear when uninstalling the driver. This doesn't affect the operation.
Version 2.00 After waking the computer from sleep, the audio interface might not be recognized in some cases, requiring it to be reconnected (by USB) or the computer to be restarted.
Fixes made to work with the Windows V2.03 driver update.
Version 2.01 Depending on your computer settings (Windows or Mac), MIDI data might not have been sent from this unit to the computer in some cases. This problem has been fixed.
Notice about the use of digital inputs (US-144MKII)
When using a digital input (DIGITAL IN), in the Control Panel for your US-144MKII, set the Sample Clock (or Sample Clock Source) to automatic and use the connected device as the clock master. Do not connect a device that cannot be used as a clock master. Moreover, when using a digital input (DIGITAL IN) and a digital output (DIGITAL OUT) at the same time, if the Control Panel Sample Clock item is set to internal, the DIGITAL IN cannot receive signals, so the DIGITAL OUT signal is sent as is back to the DIGITAL IN, causing a feedback loop. For information about the control panel features, see the US-144MKII Owners Manual chapter 4 US-144 MKII Control panel settings.

With the US-144MKII, when the clock source was set to Internal, there was a problem with digital output not being output. This has been fixed. With the US-122MKII, particularly when the sampling frequency was 96 kHz, the sound of recording and playback would sometimes become abnormal. This has been fixed.
When using Cubase LE 5, the sound output timing was slightly faster than the actual time in some cases. This has been fixed so timing is now correct. When using Cubase LE 5, the MIDI output timing was slightly faster than the actual time in some cases. This has been fixed so timing is now correct. The digital output settings of the control panel application did not function properly and there were conditions the prevented digital output using Windows Media Player, for example, from being used. This has been fixed. (only for US-144 MKII)

Windows 7 64-bit edition

If the sample rate set in the Speakers Properties (Control Panel > Hardware and Sound > Sound) differs from the sample rate of a music file, an error will occur when using Windows Media Player and the file cannot be played back.

Known Issues

Windows Vista and Windows 7 32-bit/64-bit editions
The sample rates shown in Control Panel > Hardware and Sound > Sound might not be in agreement. Set the same sample rate in both the Speakers Properties and Recording Properties.

Version 2.03

Windows Vista and Windows 7 32-bit/64-bit editions After changing the sample rate in the Speakers Properties, the first time a song is played back in Windows Media Player, a very short amount of time (about 150 msec) at the beginning of the song might not be played back. The next time, however, playback will occur without problem.
How to install drivers and firmware
Follow the procedures below to install the latest driver and then update the firmware.
9 After you disconnect the USB cable, the message above disappears. Click the Exit button to complete the update. Reconnect the USB cable to start the unit with the new firmware.

Windows

Before beginning installation, disconnect the US-122MKII or US-144MKII from the USB cable. 1 Download the latest driver (Ver. 2.03 driver) for your operating system from the TASCAM website (http://tascam.com/), and save it to your computers hard disk. 2 Uncompress the driver zip file on the hard disk. 3 Double-click the setup.exe file to start installation. Follow the procedures in the Owners Manual to complete the installation. After completing installation of the driver and restarting the computer, update the firmware. 4 Download the latest firmware (Ver. 2.03 firmware updater (Windows)) for your operating system from the TASCAM website (http://tascam.com/) and save it to your computers hard disk. 5 Uncompress the saved zip file, and double-click the exe file that appears to start the firmware updater. 6 Connect the US-122MKII or US-144MKII to the computer by USB, and confirm that connected appears on the updater screen.

7 Click the write firmware button to start the update.
Do not disconnect the USB cable during the update.
8 When the following message appears after updating completes, disconnect the USB cable.
D01108520D Printed in China

5 Connections..18

USB connections..18 Audio connections..18 Mic... 18. Guitar.. 19 Keyboard/drum machine/sound module/cassette deck/MD/CD etc. (analog connection). 19 Analog record player. 20. Monitor speakers.. 20 Headphones.. 20 MIDI connections.. 21.
2 Parts of the US-122MKII.8.
Top panel.. 8 Front panel.. 10 Rear panel...11.

6 Application Guide..22

Windows XP and Windows Media Player... 22 Windows Vista and Windows Media Player... 23 Mac OS X and iTunes.. 24 Cubase LE4.. 24

3 Installation..12

System requirements..12 Windows.. 12 Mac OS X.. 12 Installing the driver..12. Installing the driver for Windows. 13 Installing the driver for Mac OS X.. 15 Uninstalling the driver.. 15 Frequently asked installation questions and answers (FAQ).. 15 Settings on your computer.. 16 Installing Cubase LE4.. 16
7 MIDI Implementation Chart.25. 8 Troubleshooting.Specifications..29
Input/output ratings.. 29 Analog audio input/outupt. 29 Control input/output.. 29 Audio performance.. 30 Computer requirements. 30. Windows.. 30 Macintosh... 30 General.. 30 Dimensions.. 31
4 US-122MKII Control panel settings..17
Overview..17 Control panel settings..17 Audio Performance.. 17

1 Introduction

Thank you for your purchase of the TASCAM US-122MKII USB 2.0 Audio/ MIDI Interface. Please read this owners manual carefully before you begin using the US-122MKII, and use the product correctly as directed in order to ensure long and trouble-free enjoyment of all its functionality. After you have read this manual, keep it nearby for reference when required. You can also download the Owner's Manual from the supplied CD-ROM or the TASCAM web site (http://www.tascam. com). We can accept no responsibility for any loss of the data you record using this product onto other MIDI equipment in your system or onto storage devices such as hard disk.

Features

24-bit/96 kHz audio interface. 2-channel analog input signals (L, R) can be input at the same time and recorded simultaneously into your computer via USB. Two XLR mic inputs (balanced) and two 1/4 phone mic inputs (balanced/ unbalanced) are provided. One of the 1/4 phone inputs can be switched to allow direct input of an electric guitar or electric bass (R channel only). Unbalanced stereo line output (RCA connector) and headphone output. MIDI IN/OUT. Direct Monitor function allows zerolatency monitoring of the input. Power is supplied by the USB connector.

Overview

The US-122MKII is a USB-based audio/ MIDI interface designed for use with Digital Audio Workstation (DAW) software. It provides a two-input, two-output 24-bit 96 kHz audio interface and a 16-channel MIDI interface. Because the US-122MKII is USB-based, it is the ideal companion to any desktop or laptop-based digital recording setup. And since the US-122MKII operates using only USB power, you can use it with a laptop computer to create a very compact and portable digital audio workstation system. The US-122MKII is also an ideal way to capture analog sources such as records or cassette tapes into your computer and preserve them as audio CDs.
A note about computer operation
If you are unsure about how to perform basic computer operations appearing in this manual, please refer to the owners manual that came with your computer.

What is in the package

The US-122MKII package contains the following items. Take care when opening the package not to damage the items. Keep the package materials for transportation in the future. Please contact the store where you purchased this unit if any of these items are missing or have been damaged during transportation. US-122MKII main unit
USB cable CD-ROM (containing driver and manuals) DVD-ROM (Cubase LE4) Cubase LE4 Quick Start Guide Warranty card Owners manual (this document)

CAUTION

Instructions that should be followed to avoid injury, damage to the unit or other equipment, and loss of data.

Trademarks

TASCAM is a registered trademark of TEAC Corporation. Microsoft, Windows, Windows XP, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Apple, Macintosh, Mac OS and Mac OS X are trademarks of Apple Inc., registered in the U.S. and other countries. Pentium and Intel are trademarks of Intel Corporation in the U.S. and other countries. AMD Athlon is a trademark of Advanced Micro Devices, Inc. Cubase is a registered trademark of Steinberg Media Technologies GmbH. ASIO is a trademark of Steinberg Media Technologies GmbH. Other company names, product names and logos in this document are the trademarks or registered trademarks of their respective owners.
Conventions used in this manual

The following conventions are used in this manual: Front panel keys, knobs, and indicators, and rear panel connectors are designated in all-capital letters. Example: LINE IN jacks This typeface is used to designate messages displayed by the software. Example: Control Surface Protocol This typeface is used to designate software menu functions and on-screen controllers. Example: ASIO Device Additional information is introduced in the styles below when needed:
Useful hints when using the unit.
Explanation of actions in special situation and supplement.
Precautions and notes for placement and use
Do not place any object on the unit for heat dissipation. Avoid installing this unit on top of any heat-generating electrical device such as a power amplifier.

Beware of condensation

If the unit is moved from a cold to a warm place, or used after a sudden temperature change, there is a danger of condensation; vapor in the air could condense on the internal mechanism, making correct operation impossible. To prevent this, or if this occurs, let the unit sit for one or two hours at the new room temperature before using.

Cleaning the unit

To clean the unit, wipe gently with a soft dry cloth. Do not wipe with chemical cleaning cloths, benzene, paint thinner, ethyl alcohol or other chemical agents to clean the unit as they could damage the surface.
2 Parts of the US-122MKII

Top panel

1 MIDI IN indicator Lights when MIDI
data is being received at the MIDI IN connector.
A device that transmits the MIDI Active Sense message will cause this indicator to blink constantly.
2 MIDI OUT indicator Lights when MIDI
data is being transmitted from the MIDI OUT connector.
3 USB indicator Lights to indicate a valid
USB connection to the host computer.
4 MON MIX balance knob Controls
the balance of the signal sources being output from the LINE OUT jacks and the PHONES jack. When this knob is turned to the INPUT side, the signal being input to the US-122MKII (from the MIC IN jacks, or 1/4 LINE IN jacks) will be output. When this knob is turned to the COMPUTER side, the output signal received from the computer via USB will be output.
0 SIG/OL indicators Light when signals
are being input to the input channels (L, R). They will light green to indicate a signal is present, and will light red immediately before distortion occurs. These indicators will light green when the maximum level is between -30 dB and -2 dB. The indicators will light red when the maximum level is within -2 dB.
5 MONO switch Turn this switch ON
if you want to monitor in monaural. This switch affects only the MIC/LINE input signal. audio signal being input to the MIC IN L jacks and LINE IN L jacks.

q PHANTOM switch/indicator Turns
on the +48V phantom power supplied to the MIC IN jacks. The indicator lights when the PHANTOM switch is ON.
6 INPUT L knob Adjust the level of the
7 PHONES/LINE OUT level knob
Controls the output level of the LINE OUT jacks and the PHONES jack.
Use the PHONES/LINE OUT knob to minimize the volume before turning the PHANTOM switch ON or OFF. Depending on the mic, loud noises might be produced and damage could be caused to equipment or to peoples hearing. Microphones should not be connected to or disconnected from the US-122MKII with phantom power switched on. Turn this switch on only if you are using condenser microphones that require phantom power. Unbalanced dynamic microphones should never be connected to phantompowered connectors. Please note that if you are operating the unit with a battery-powered laptop computer, the battery life of the computer will be reduced if the PHANTOM switch is on.
Use the PHONES/LINE OUT knob to minimize the volume before connecting headphones. Failure to do so could cause a sudden burst of loud noise, which might result in hearing damage, for example.
8 INPUT R knob Adjust the level of the
audio signal being input to the MIC IN R jacks and LINE IN R jacks.
MIC/LINE-GUITAR select switch Set 9
this switch as appropriate for the input source you have connected to the LINE/GUITAR IN R jack. Use the GUITAR position if you have directly connected an electric guitar or electric bass. Use the MIC/LINE position if you have connected an electronic musical instrument, audio device, or mic.

Front panel

w MIC IN (L, R) jacks (XLR balanced)
These are analog mic input jacks. The wiring is as follows: pin 1 = ground, pin 2 = hot, pin 3 = cold.
e LINE IN L jack (TRS 1/4 phone jack)
These are balanced line input jacks. is a headphone output jack.
r PHONES jack (stereo 1/4 phone) This
phone jacks) These are balanced line input jacks. This also accommodates guitar input. If the top panel MIC/LINE-GUITAR select switch is in the GUITAR position, this operates as an unbalanced input jack for guitar. If the MIC/LINE-GUITAR select switch is in the MIC/LINE position, this operates as a balanced input jack. (Sleeve = ground, tip = hot, ring = cold)
t LINE IN R/GUITAR IN jack (TRS 1/4

The headphone output level and the line output level are both adjusted using the combined PHONES/LINE OUT level knob.

Rear panel

y USB connector Use the provided USB
cable to connect this to the host computers USB 2.0 port.
u MIDI OUT connector Transmits MIDI

messages. messages.

i MIDI IN connector Receives MIDI o LINE OUT L/R jacks (RCA connector,
If the US-122MKII is operating with a USB 1.1 (USB 2.0 Full Speed) connection, the sample rate choices will be limited to 44.1 kHz and 48 kHz.
The US-122MKII obtains power from the host computer via the USB cable. In rare cases, a computers USB port may not be able to supply enough power to operate the US-122MKII. If this occurs, consider purchasing a USB 2.0 hub that comes with its own external power supply.
unbalanced) These are analog stereo output jacks.
The line output level and the headphone output level are both adjusted using the combined PHONES/LINE OUT level knob.

3 Installation

System requirements
See the TASCAM website for updated information about OS compatibility.

Mac OS X

Supported operating system:
Mac OS X 10.4.11 Mac OS X 10.5.6 or later

Windows

Windows XP 32-bit SP2/SP3 Windows XP 64-bit SP2 Windows Vista 32-bit SP2 Windows Vista 64-bit SP2 or later
Supported computer system:
Apple Macintosh series equipped with a USB port as standard equipment CPU/clock: Power PC GGHz or faster, or Intel processor Memory: 512 MB or more
Windows compatible computer with a USB port (USB 2.0 is recommended) CPU/clock: Pentium 4 1.4 GHz or faster AMD Athlon 1.4 GHz or faster (or equivalent processor) Memory: 512 MB or more for Windows XP 32-bit and Windows Vista 32-bit 1 GB or more for Windows XP 64-bit and Windows Vista 64-bit
Although this product has been checked for use with typical computers that meet the above operating requirements, we cannot guarantee that it will operate with all computers that meet these requirements. Please be aware that even under the same conditions, processing capability may vary depending on differences of the design and system.

Installing the driver

In order to use the US-122MKII, you must install the appropriate driver into your computer. As described below, this is an easy process using the CD-ROM included with the US-122MKII. Driver are updated from time to time. You can download the most recent version of the driver from the TASCAM website <http:// www.tascam.com/>. Do not connect the US-122MKII to your computer before you have installed the driver.

Handle the enclosed CD-ROM with care. If the disc becomes scratched or dirty, your computer may be unable to read it and the software cannot be installed. If the disc becomes unreadable, a fee will be charged for its replacement. Never attempt to play the enclosed CDROM in a conventional audio CD player, as the resulting noise may damage your speakers or your hearing.
Installing the driver for Windows
During driver installation, a warning that this software. has not passed Windows Logo testing will appear. If this message appears, click Continue to proceed with the installation. During installation, you must connect, disconnect and reconnect the unit in steps 7, 8 and 9. You should complete each of these installation steps in less than one minute. Installation may fail if you take too much time.
55 Click the Install the driver button when the screen below appears.
11 Confirm that the unit and the PC are not connected by the USB cable. 22 Insert the included driver installation CD-ROM into the PC where you will install it. 33 Click the Install Driver button when the screen below appears. (If this sreen does not appear automatically, find and open the Autorun2.exe program on the driver CD-ROM.)
66 Read the contents of the License Agreement, and select I accept the agreement if you agree to the terms. Next, click the Install button to start installation.
77 When the screen below appears, use the supplied USB cable to connect the unit to the PC.
44 When the language selection screen (below) appears, select the language you prefer and then click the OK button.
88 When the screen below appears, unplug the connecting USB cable from the unit or the PC. 111When the screen below appears, the installation is complete. Click the Reboot now button to restart the PC to use the driver.
99 When the screen below appears once more, reconnect the unit and the PC with the USB cable.
111 After the PC has restarted, open the TASCAM US-122 MKII / US-144 MKII (Start > Control Panel) or US-122 MKII & US-144 MKII Control Panel (Start > All Programs > TASCAM). If the Driver Version, Device and other data appear correctly, the installation has succeeded.

Settings on your computer
Here are a few basic points to help you set up your computer for best performance with audio applications. Do not run other applications. You will probably use your computer for applications other than audio, but we recommend that you avoid running other applications at the same time you are running audio programs. Processing digital audio places a considerable load on your computer. This means that if you are running other applications (especially graphics or Internet tools) at the same time as your audio application, the processing may not happen fast enough.
4 IMPORTANT SAFETY PRECAUTIONS US-122MKII Control panel settings
The Control Panel lets you make various settings for the US-122MKIIs functionality. On Windows XP and Windows Vista, the US-122MKII & US-144MKII Control Panel shortcut can be found in the Windows Start menu > Control Panel or the Start menu > All Programs > TASCAM. On Mac OS X, the US-122MKII & US144MKII Control Panel is located in the Applications folder. Other useful audio and MIDI settings for Mac OS X can be found in Applications/Utilities/Audio MIDI Setup.

Control panel settings

Audio Performance
The US-122MKII driver temporarily stores input and output audio sample in buffers. The size of these buffers can be adjusted. A smaller buffer size will reduce the delay when monitoring the audio signal, but will require your computer to perform the processing faster. If the processing does not occur in time (e.g., if other system operations are occurring), you may hear clicks, pops, or dropouts in the audio signal. A larger buffer size provides more safety against such problems caused by other system activities, but will produce greater delay when monitoring the audio signal. You should select the buffer size that works best for your system. On the Windows version of the US-122MKII Control Panel, the Audio Performance setting permits you to adjust the buffer size that will be used by all audio applications. The lowest latency setting is the minimum buffer size, and the highest latency setting is the maximum buffer size. On Mac OS X, the buffer size is determined by each audio application. Consequently, there is no Audio Performance setting on the Mac OS X version of the US-122MKII Control Panel. Some applications select the buffer size automatically while others permit the user to select the buffer size. Please consult your audio applications documentation for details.

The Control Panel is divided into the following two sections.

Status section

This shows the current status of the driver and the connected hardware. You cannot edit the settings from this section.

Setting section

You can edit the various settings of the driver.
The Mac OS X US-122MKII control panel has no settings.

5 Connections

USB connections
Using the included USB cable, connect the US-122MKII to your computer as shown in the illustration.
The US-122MKII has two input channels (L, R), with a MIC IN jack (XLR) , LINE IN and LINE/GUITAR IN jack (1/4 phone jack) provided for each channel. Do not connect signals to both of these analog input jacks at the same time. If both are connected, the signal will not be correctly input to the US-122MKII.

Computer

Connect your mics to the MIC IN (L, R) jacks (XLR). If you are using a condenser mic that requires phantom power, turn on the PHANTOM switch.
Some USB devices access the USB bus frequently. To avoid dropouts and clicks in the audio signal, we strongly recommend that you do not connect other USB devices to the USB bus used by the US-122MKII. USB keyboards and mice are exceptions to this, and will probably not cause problems.

Audio connections

Connect the output signal of your mic, guitar, keyboard, or other audio device to the US-122MKII, where it will be converted into digital audio and sent via USB to your computer. Connect the output of the US-122MKII to your speakers (via an amp) or headphones, so you will be able to monitor the audio signals coming into the US-122MKII or being produced by your computer. The balance between the input signal from the mic and guitar and the output signal from the computer should be adjusted by the MON MIX knob.
Connecting a dynamic mic with an unbalanced connection could damage it if the PHANTOM switch is ON. Do not connect or disconnect mics when the PHANTOM switch is ON. Doing so could cause loud noise or damage the equipment. Use the PHONES/LINE OUT knob to minimize the volume before turning the phantom switch ON or OFF. Depending on the mic, loud noises might be produced and damage could be caused to equipment or to peoples hearing.

When the PHANTOM switch is ON the PHANTOM indicator lights on the top panel. The pin configuration of the unit's XLR connector is: Pin 1 = Ground Pin 2 = Hot Pin 3 = Cold
Keyboard/drum machine/sound module/cassette deck/MD/CD etc. (analog connection)
Connect the analog audio output of these devices to the LINE IN L or LINE/GUITAR IN R jacks (1/4 phone jack) on the front panel. If you use the R-channel, set the MIC/LINEGUITAR switch on the top panel to MIC/ LINE.

Guitar

Connect your guitar to the R-channel LINE/ GUITAR IN jack (1/4 phone jack) on the front panel and set the MIC/LINE-GUITAR switch on the top pannel to GUITAR.
Keyboard/ drum machine/ sound module/ cassette deck/ MD/CD or similar device

Monitor speakers

Connect monitor speakers (powered speakers or an amplifier and speakers) to the LINE OUT jacks on the rear panel.

Analog record player

The output of an analog record player cannot be connected directly to the US-122MKII. You must connect a phono amp between your analog record player and the US-122MKII. (Alternatively, you can connect it via an audio amp that has PHONO inputs.)
Powered speakers, or amp and speakers

Headphones

Connect headphones to the PHONES jack (standard stereo phone jack) on the front panel.

OUT Analog record player

Phono amp or amp with PHONO input

MIDI connections

Connect your sound module, keyboard/ synthesizer, drum machine, or other MIDI device to the US-122MKII as shown below.
USB Computer MIDI IN MIDI OUT Sequencer/ drum machine etc.
USB Computer MIDI OUT MIDI IN Sound module etc. Analog output Keyboard/ synthesizer etc. Analog output External Mixer
The MIDI IN indicator and USB indicator sometimes stay lit even after the connected computer has been shut down. This is because some computers continue to provide power through the USB cable even when they are shut down. When the MIDI IN jack is receiving any kind of MIDI data, the MIDI IN indicator lights. If a device that sends MIDI Active Sensing messages is connected, this indicator will continuously blink. To avoid this, disable the MIDI Active Sensing on the connected device. When using Windows Media Player, if the MIDI music playback output destination (default device) is set to Microsoft GS Wavetable SW Synth in the Sounds and Audio Devices part of the Control Panel, you can listen to MIDI performances through this units LINE OUT and PHONES output.

If you cannot find the above item, click Sounds, Speech, and Audio Devices and it will appear.
2) Change the USB port Since the unit may not properly function with some USB ports, try connecting to a different (built-in) USB port, and reinstall the driver.
33 Click the Audio tab, and set the Default device: for Sound playback and Sound recording to TASCAM US-122MKII. Windows Vista 11 Shut down all applications, and open the Control Panel from the Start menu. 22 Open Sound.
The sound breaks up or there is noise. The load on the computer causes sound to break up and noise to occur. Methods to reduce the load on the computer are introduced below. 1) If a wireless LAN, antivirus software and other software that run in the background are operating, they regularly put burdens on the computer, which can cause sound to break up and noise. Stop wireless LAN transmission, antivirus software and other software running in the background when using this unit. 2) Set the buffer size in the DAW software that you are using to a larger value.
Consult the maker of your DAW software for methods to reduce its burden on your computer. If you are not using a DAW, try setting the Audio Performance sitting in the driver for this unit to High Latency.
33 Click the Playback tab, click Speakers US-122MK2 and click the Set Default button. Mac OS X 11 Shut down all applications and open System Preferences. 22 Open Sound. 33 From the output tab, select US122MKII output. After completing the settings, restart the computer and check the playback sound. Depending on the application you are using, it might also be necessary to make other device settings in addition to those above. In particular, since DAW software operates using audio engines that are different from the OS settings, confirm the DAW driver settings first after installing the driver for this unit. Please see the manual for the application that you are using for detailed setting procedures. For the bundled Cubase LE4 software, see the manual on the included CD-ROM.
3) Change the settings of your computer so that they are optimal for audio processing. Windows XP 11 Right-click My Computer and select Properties. 22 Click the Advanced tab. 33 Click Settings in the Performance section. 44 On the Performance Option screen, select the Adjust for Best Performance option.
Windows Vista a) Turn Aero off. 11 Right-click the desktop and select Personalize to open the Personalize appearance and sounds screen. 22 Choose Window Color and Appearance and then click Open classic appearance properties for more options. 33 Select Windows Vista Basic or any option other than Windows Aero. b) Performance settings 11 Right-click Computer, select Properties, and then click Advanced system settings. 22 Click the Advanced tab. 33 Click Settings in the Performance section. 44 On the Performance Option screen, select the Adjust for Best Performance option. Mac OS X 11 Open System Preferences and select Energy Saver. 22 Click the Sleep tab. 33 Set Put the computer to sleep when it is inactive for: to Never. 44 Set Put the display(s) to sleep when the computer is inactive for: to Never. 55 Click the Options tab. If a Processor performance setting is available, set it to Highest.

Depending on the Mac OS version and model this setting might not be available.
Questions related to Cubase LE4 Since Cubase LE4 is a product provided by Steinberg Media Technologies GmbH, it is not supported by TASCAM. Please use the Cubase LE4 Help menu (and access the PDF manuals) for information about how to use this software.

9 Specifications

Input/output ratings
Analog audio input/outupt
MIC IN (Balanced) terminal
Connector: XLR-3-31 equivalent Nominal input level: 58 dBu (When INPUT konb is set to MIC) 14 dBu (When INPUT knob is set to LINE) Maximum input level: +2 dBu (When INPUT knob is set to LINE) Input impedance: 2.2 k Maximum input level: +9 dBV (When INPUT knob is set to LINE) Input impedance: 1 M
LINE OUT (Unbalanced) terminal
Connector: RCA pin jack Nominal output level: 10 dBV Maximum output level: +6 dBV Output impedance: 200

PHONES terminal:

Connector:Standard stereo phone jack Maximum output level: 18 mW + 18 mW or more (THD+N less than 0.1%, 32 load)
LINE IN (Balanced) terminal
Connector: TRS Standard phone jack L channel, and R channel with MIC/LINEGUTAR set to MIC/LINE Nominal input level: 40 dBu (When INPUT konb is set to MIC) +4 dBu (When INPUT knob is set to LINE) Maximum input level: +20 dBu (When INPUT knob is set to LINE) Input impedance: 15 k

Control input/output

MIDI IN terminal
Connector: DIN 5 pin Format: Standard MIDI format

MIDI OUT terminal

USB terminal
Connector: USB B type 4 pin Format: USB 2.0 High speed (480 MHz)
R channel with MIC/LINE-GUTAR set to

GUITAR

Nominal input level: 51 dBV (When INPUT konb is set to MIC) 7 dBV (When INPUT knob is set to LINE)
USB 2.0 Full speed (12 MHz USB 1.1 equivalent)

Audio performance

Frequency response
20 Hz - 20 kHz, +0.5 dB/1.0 dB (44.1/48 kHz) (MIC to LINE OUT) 20 Hz - 40 kHz, +0.5/1.5 dB (88.2/96 kHz) (MIC to LINE OUT)
Supported computer system
Signal-to-noise ratio (LINE IN to LINE OUT)
Through ADC and DAC: 96 dB (When INPUT knob is set to LINE, 20 kHz LPF + A-weighted) Direct monitor: 107 dB (When INPUT knob is set to LINE, 20 kHz LPF + A-weighted)

Macintosh

Total harmonic distortion (LINE IN to LINE OUT)
Through ADC and DAC: Less than 0.0045% (When INPUT knob is set to LINE, 1 kHz +20 dBu input, 20 kHz LPF) Direct monitor: Less than 0.002% (When INPUT knob is set to LINE, 1 kHz, +20 dBu input, 20 kHz LPF)

Computer requirements

General

Sampling frequency

44.1/48/88.2/96 kHz
Supported Operating system
Windows XP 32 bit SP2/SP3 Windows XP 64 bit SP2 Windows Vista 32 bit SP2 Windows Vista 64 bit SP2 or later

Sampling bit rate

16/24 bit
Supplied via USB (5V, maximum current 500 mA)

Power consumption

Dimensions
135.4 x 179 x 47 mm (W x H x D)

Weight

0.7 kg

Operating temperature

5 to 35 C

Bundled software

Cubase LE4 (for Windows or Macintosh)

135.4 mm

179 mm
Illustrations and other depictions may differ in part from the actual product. Specifications and external appearance may be changed without notification to improve the product.

TEAC CORPORATION

Phone: +81-42-356-9143 1-47 Ochiai, Tama-shi, Tokyo 206-8530, Japan

www.tascam.jp

TEAC AMERICA, INC.
Phone: +1-323-726-Telegraph Road, Montebello, California 90640 USA

www.tascam.com

TEAC CANADA LTD.
Phone: +1905-890-8008 Facsimile: +1905-890-Wallace Street, Mississauga, Ontario L4Z 1Z8, Canada
TEAC MEXICO, S.A. de C.V.
www.teacmexico.net Phone: +52-55-5010-6000 Ro Churubusco 364, Colonia Del Carmen, Delegacin Coyoacn, CP 04100, Mxico DF, Mxico

TEAC UK LIMITED

www.tascam.co.uk Phone: +44-8451-302511 Suites 19 & 20, Building 6, Croxley Green Business Park, Hatters Lane, Watford, Hertfordshire, WD18 8TE, UK

TEAC EUROPE GmbH

Phone: +49-611-71580 Bahnstrasse 12, 65205 Wiesbaden-Erbenheim, Germany

www.tascam.de

Printed in China