## VT-4 Driver Ver.1.0.0 for Windows® 10

(Note)
In no event shall Roland Corporation ("Roland") be liable to end-users for any damages whatsoever, including but not limited to financial damages for loss of business profits or business information arising from the use of, or inability to use this product. The foregoing provision is effective even if Roland has been advised of the possibility of such damages.

* | Any modification, duplication, distribution, or reproduction of material (including the files related to this driver) without permission from Roland Corporation ("Roland") is prohibited.

* | Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
* | ASIO is a trademark and software of Steinberg Media Technologies GmbH.
* | All product names mentioned in this document are trademarks or registered trademarks of their respective owners.

## Driver for Windows 10

Your computer downloads the Windows® 10 driver for VT-4 automatically from the Internet when VT-4 is connected to the computer.

- This driver also supports ASIO(Steinberg Audio Stream I/O Interface).

* | When using a touch-enabled PC, replace the words "click" and "right-click" in this document with "tap" and "press and hold", respectively.

### System requirements

Operating System
  Microsoft® Windows® 10 (64-bit Edition/32-bit Edition)

  * | Windows 10 Mobile is not supported.

Computer
  Windows-compatible PC equipped with USB port

  * | Intel chipset is recommended.
  * | VT-4 may not perform to its full specs when used with an added USB 2.0 interface card.
  * | This product cannot be used with a USB 3.0 port that is not compatible with USB 2.0 specification.
  * | If this product does not work correctly when connected to a USB 3.0 port, you will need to connect it to a USB 2.0 port.
  * | Even if connected to a USB 3.0 port, the performance of the product will not change.

> * | This driver cannot be used in a virtual Windows environment, such as Hyper-V or Virtual PC.
> * | Mac computers running Microsoft Windows are not supported.

Other
  Internet connection

  * | The Internet connection is needed to download the driver.

### Cautions and Limitations

- Sound interruption or other less-than-perfect outcomes may be experienced if your computer's performance and specifications are somewhat inadequate. The types of applications you use and the way in which you use them can also influence the experience you receive.
- If the PC is started up while the VT-4 is still connected to the PC with its power turned on, the driver may not be loaded properly and you may not be able to use the VT-4. In such cases, connect the VT-4 to another USB port or turn on the power of VT-4 after the PC starts up.
- If the VT-4 does not work correctly after resuming from Sleep mode, you should exit all applications that use the VT-4, and then turn the power of the VT-4 off and on again.
- If the USB cable is disconnected and reconnected while the VT-4 is in use, or if the power of the VT-4 is turned off, then on again, it may stop operating correctly. If this occurs, after resuming, you should exit all applications that use the VT-4, and turn the power of the VT-4 off, then on again.
- If your computer was experiencing a heavy processing load, such as when accessing a CD-ROM Drive or network while the VT-4 was being used, the VT-4 may no longer operate correctly. If this occurs, stop the playback or recording, then try starting playback or recording over again. If you are still unable to play back or record, quit all programs that are using the VT-4, then turn the VT-4 off and then on again.
- Audio clicks and pops may occur during playback or recording if you connect or disconnect other USB devices (such as USB memory) or turn another USB device on/off while using the VT-4.
- In some cases, you may not obtain the expected level of performance if you're using a USB-connected hard disk at the same time as the VT-4. Do not use a USB-connected hard disk as the storage destination for the audio that you're playing back or recording.

## Installation

* | To reinstall or update the driver, refer to "To reinstall."

1. Disconnect all USB devices except keyboard and mouse, and then start Windows.
2. Check that the computer is connected to the Internet.
3. On Windows, close the "Sound" settings screen of the Control Panel and all running applications.
4. Turn on the power of VT-4 and connect it to the computer using a USB cable.
   The driver will be installed automatically.
5. A few minutes later, click the start button.

   * | If "All apps" appears, click "All apps."

6. Open the Roland folder.
   If the "VT-4" icon is displayed, the installation is completed.

* | Under normal conditions, the driver installation is completed in several minutes.It may take about 10 minutes depending on the Internet connectivity or if there are other drivers being installed for other devices.
* | A problem may have occurred if VT-4 is connected but cannot be used after waiting for 10 minutes.Refer to "Troubleshooting."

## Before you begin

### Input/output device settings for your application

In order to obtain optimal performance from your applications, specify the input/output device for your applications as described below. (For details on making these settings, refer to the owner's manual for your application.)

* | If you are unable to select the VT-4 device, a problem may have occurred. Refer to "Troubleshooting."

#### Audio Playback/Recording devices

Of the total audio input/output channels provided by the VT-4, there are 6 INs and 6 OUTs
You can use the Playback/Recording devices shown below.

[Playback devices]
  OUT (VT-4)
  TO MIC IN (VT-4)
  TO CARRIER (VT-4)

  * | If you've specified a different name in the "Sound" settings of the Control Panel, the name you specified will be displayed.

[Recording devices]
  MIX (VT-4)
  WET (VT-4)
  DRY (VT-4)

  * | If you've specified a different name in the "Sound" settings of the Control Panel, the name you specified will be displayed.

#### Setting the playback/recording device in Windows

Set VT-4 as the default device to allow its use in "Groove Music" and Windows Media Player.

1. On the Taskbar, right-click the speaker icon() and select "Sounds".
2. In "Playback," right-click the device that you want to use for playback (such as the VT-4's "OUT"), and choose "Set as Default Device."

   * | The "Set as Default Device" message does not appear if the device is already set as the default device.
   * | A problem may have occurred if the devices above cannot be selected. Refer to "Troubleshooting."

3. Similarly, in "Recording," right-click the device that you want to use for recording (such as the VT-4's "MIX"), and choose "Set as Default Device."

   * | The "Set as Default Device" message does not appear if the device is already set as the default device.
   * | A problem may have occurred if the devices above cannot be selected. Refer to "Troubleshooting."

4. Click [OK] to close "Sound."

#### Device settings for ASIO-compatible applications

When using the VT-4 with an ASIO-compatible application, select "VT-4" as the ASIO setting for your application.

* | To prevent an audio feedback loop or double monitoring, make settings on your application to turn monitoring off.
* | The VT-4 main unit does not support ASIO Direct Monitor, but if you use Cubase, by enabling Direct Monitoring in the Cubase setting, you can prevent loop oscillation of audio equipment and duplicate monitoring.
* | When using the VT-4 with ASIO, we recommend that you set your application so that it does not use the Microsoft GS Wavetable Synth. (In order to decrease the load, and for convenience when changing Audio Buffer Size of the driver.)

#### MIDI input/output device

* | In the Windows Media Player, the MIDI input/output device of VT-4 cannot be used. Please select the following device in your MIDI compatible application.

[MIDI OUT devices]
  VT-4
[MIDI IN devices]
  VT-4

### Opening online document

When the driver installation is completed, you can open the Readme file (this document) by following the procedure described below.
Use this file for troubleshooting and for checking how to set up the driver.

1. Click the start button.

   * | If "All apps" appears, click "All apps."

2. Open the Roland folder and then click "VT-4 Readme".
3. The online document for the driver is displayed.

## Changing/checking driver settings

* | If the Windows monitoring function is enabled, it won't be possible to change the driver settings. Refer to "Could the Windows monitoring function be enabled?" and disable monitoring.

1. Click the start button.

   * | If "All apps" appears, click "All apps."

2. Open the Roland folder and then click "VT-4".
3. The "VT-4 Driver Settings" dialog box will appear.

   * | For details on the setting items, refer to "About the items in the Settings dialog box."

### About the items in the Settings dialog box

SAMPLE RATE
  Displays the present sample rate.
  To change the sample rate, select a sample rate from the menu.

  * | When the sampling rate is switched, a small pop noise may be heard, but this does not indicate a malfunction.

Audio Buffer Size
  You can adjust the audio input/output buffer size. (By default, this will be the sixth position from the left.)
  Decreasing the buffer size will shorten the latency and improve realtime performance, but might make it more likely that you will experience audio clicks and pops, depending on your computer's processing power and the song data load.
  Increasing the buffer size will lengthen the latency, but will make audio streaming more stable, and it will be less likely for audio clicks and pops to occur.
  In general, you'll probably want to decrease the buffer size for better realtime performance if you're playing a software synthesizer in real time, or if you're monitoring an audio input that's being passed through your DAW software.
  Conversely, you can increase the buffer size to prevent audio clicks and pops if you're recording or playing back song data that contains numerous tracks and presents a heavy processing load.
  By changing the buffer size as appropriate for your situation, you can obtain the right balance between realtime performance and audio streaming stability.

  * Note!
  If you use an application with an audio equipment test function, after changing the buffer size, carry out a test.

ASIO Buffer Size
  This is the buffer size that can be set by the ASIO application.
"Match with the ASIO sample rate" check box
  This option matches the Windows sound sample rate, e.g. MME, DirectSound, or WASAPI, with the ASIO sample rate. Select this check box when using an ASIO-compatible application concurrently with a Windows sound-compatible application such as Windows Media Player.
"Show README" button
  This button displays the README file (this document).
Information
  This field shows the driver version.

## To reinstall

1. Delete the driver as described in "To uninstall."

   * | When you uninstall, the settings of the Driver Settings dialog box will be initialized. For details on the setting items, refer to "About the items in the Settings dialog box."

2. Install the driver as described in "Installation."

## To uninstall

1. Disconnect all USB devices except keyboard and mouse, and then start Windows.

   * | Be sure to also remove the VT-4's USB cable.

2. Exit all applications before you begin the uninstallation.

   * | Please wait for about 10 seconds until these applications exit completely.

3. Right-click the start button and then click "Apps and Features" or "Programs and Features".
4. In the list, select VT-4 Driver, and then click "Uninstall" or "Uninstall/Change".

   * | The driver is not installed if VT-4 Driver is not displayed in the list.You do not need to uninstall the driver.

5. If a message confirming the uninstallation appears, click "Uninstall".
6. If a dialog box regarding User Account Control appears, click [Yes].

   * | If you are asked to enter the password for an administrative account, sign in to Windows as a user whose Account Type is Administrator, and then perform the uninstallation.

7. The display will indicate "The installed VT-4 Driver will be uninstalled." and click the [OK].
8. When the message "Uninstallation was completed." is displayed, click [OK] to restart Windows.

## Troubleshooting

### Cannot install the driver

Check the status of the device
  Under normal conditions, the driver installation is completed in several minutes.
  If the VT-4 is connected but cannot be used after waiting for 10 minutes, follow the procedure below and check the status of the device.

1. Turn on the power of VT-4 and connect it to the computer using a USB cable.
2. Right-click the start button and then click "Device Manager".
3. In the View menu, click "Devices by type".
4. Click "Sound, video and game controllers" or "Other devices" to display the VT-4 device.
5. When the VT-4 device appears, double-click it to open the "VT-4 Properties" screen.
6. Under the General tab, check the "Device status" field.

  If the message in this field is "This device is working properly.", the driver installation is completed.
  Otherwise, the driver installation may have failed.
  See other topics in Troubleshooting for driver installation problems.
Is your computer connected to Internet?
  To install this driver, your PC must be connected to the Internet.
  Check that your PC is connected to the Internet (for example by using a Web browser), and then install the driver again by following the steps described in the "Installation" section.
Reconnect VT-4
  The device recognition may have failed.
  Disconnect VT-4's USB cable, turn off the power of VT-4 and turn it on again, and then reconnect it to your PC.
Install the driver manually
  Depending on the Internet connectivity, the driver may not be installed automatically.
  If this is the case, follow the procedure below to install the driver.

1. Turn on the power of VT-4 and connect it to the computer using a USB cable.
2. Right-click the start button and then click "Device Manager".
3. In the View menu, click "Devices by type".
4. Click "Sound, video and game controllers" or "Other devices" to display the VT-4 device.
5. Right-click VT-4, and then select "Update driver" or "Update Driver Software".
6. Select "Search automatically for updated driver software".
   Your PC starts searching for the driver, and the driver is installed automatically.

  The installation is completed if the "Windows has successfully updated your drivers" or "Windows has successfully updated your driver software" message is displayed. Click "Close".
  If the "System Settings Change" dialog box appears, click [Yes] to restart Windows.
If Windows Update is running, you may not be able to install the driver.
  When Windows Update is completed, install the driver again according to the Installation procedure.

### Cannot select/use the VT-4 device

Was the driver installed correctly?
  The driver may not be installed properly.See the "Cannot install the driver" section.
  If you cannot use VT-4 after the driver is installed, reinstall the driver by following the procedure described in the "To reinstall" section.
Could the VT-4 be in use by other software?
  Exit all applications that are using the VT-4, and turn the power of the VT-4 off, then on again.
  If this does not solve the problem, use the procedure described in "To reinstall" to reinstall the driver.
Is the VT-4 WAVE/MIDI device name displayed?
  If the device name is not displayed, exit all applications that are using the VT-4, and turn the power of the VT-4 off, then on again.
  If this does not solve the problem, use the procedure described in "To reinstall" to reinstall the driver.
Did the computer enter a Sleep mode while the VT-4 was connected with its power turned on?
  If the VT-4 does not work correctly after resuming from Sleep mode, you should exit all applications that use the VT-4, and then turn the power of the VT-4 off and on again.
Was the USB cable disconnected and reconnected while the VT-4 was being used, or was the power of the VT-4 turned off, then on again?
  If the USB cable is disconnected and reconnected while the VT-4 is in use, or if the power of the VT-4 is turned off, then on again, it may no longer operate correctly. If this occurs, exit all applications that are using the VT-4, and turn the power of the VT-4 off, then on again.
If the PC is started up while the VT-4 is still connected to the PC with its power turned on, the driver may not be loaded properly and you may not be able to use the VT-4.
  In such cases, connect the VT-4 to another USB port or turn on the power of VT-4 after the PC starts up.

### Cannot change the sample rate from Driver Settings/Application.

During playback or recording, the sample rate cannot be changed in the Driver Settings dialog box.
  Change the sample rate within the currently-used application, or quit the application and then change the sample rate in the Driver Settings dialog box.
Are you using another application?
  During playback or recording using another application, the sample rate cannot be changed.
Is the Windows Sound Control Panel open?
  If the Windows Sound Control Panel is open, sometimes the sample rate cannot be changed.
If the Windows monitoring function is enabled, the sample rate cannot be changed.
  Refer to "Could the Windows monitoring function be enabled?" and disable monitoring.
If the Microsoft GS Wavetable Synth is used, the sample rate cannot be changed.
  Do not use Microsoft GS Wavetable Synth.

### A number such as "2-" is now displayed at the beginning of the device name

Could you have connected the VT-4 to a different USB port?
  If you connect the VT-4 to a different USB port, the operating system may automatically add a number to the beginning of the device name.
  Even if this occurs, it will not cause any problems with the operation of the VT-4.

  * | If you want to restore the device name that does not have this added number, connect the VT-4 to the same USB port as when you installed it, or reinstall the driver as described in "To reinstall."

### The screen indicates "Device currently used by another application." and driver settings cannot be made

Are you using another application?
  The driver settings cannot be changed while it is being used by an application.
If the Windows monitoring function is enabled, it won't be possible to change the driver settings.
  Refer to "Could the Windows monitoring function be enabled?" and disable monitoring.

### No sound is heard; cannot playback or record

Was the driver installed correctly?
Could the VT-4 be in use by other software?
Did you make settings as described in "Before you begin" so that the VT-4 driver could be used?
  The VT-4 cannot be used unless you make these settings. Refer to the sections on "Before you begin."
Could you have entered Sleep mode during playback or recording?
  If the VT-4 does not work correctly after resuming from Sleep mode, you should exit all applications that use the VT-4, and then turn the power of the VT-4 off and on again.
During playback or recording, did you turn the power of the VT-4 on/off, or disconnect and reconnect the USB cable?
  If you turn the power of the VT-4 on/off or disconnect and reconnect the USB cable during playback or recording, the VT-4 will no longer be able to play back or record. Stop playback or recording, and then start playback or recording once again. If you are still unable to play back or record, quit all programs that are using the VT-4, then turn the VT-4 off and then on again.
Try adjusting the audio buffer size of the driver
  If the size of the driver's audio buffer is too small, sound may not be produced, or it may be impossible to carry out normal playback and recording.
  In such cases, you should refer to "Changing/checking driver settings," and increase the size of the buffer.

### Sound played by your computer is inaudible or too soft

Could you have turned down the volume of the device or application in the Volume Mixer?
  The system's Volume Mixer lets you adjust the volume for each device or application.
  1. On the Taskbar, right-click the speaker icon() and select "Open Volume Mixer".
  2. The Volume Mixer will appear. From the "Device" pulldown menu, choose the device that you're using for playback, and adjust the volume.
Are you using voice communications software?
  If you're using voice communications software, the volume of the audio device might be automatically adjusted according to the status of communications.
  If so, disable automatic volume adjustment as follows.
  1. On the Taskbar, right-click the speaker icon() and select "Sounds".
  2. In the "Communications" tab, change the setting of the item "When Windows detects communications activity" to "Do nothing."
  3. Click [OK] to close "Sound."

### Part of the playback is wrong: e.g., notes are broken off prematurely, or some notes are lost

Problems may be solved by making the settings shown below.

Try adjusting the audio buffer size of your software
  If your software allows you to adjust the audio buffer size, try changing the setting.
  Normally, clicks and pops can be eliminated by increasing the buffer size.
Try adjusting the audio buffer size of the driver
  If your software does not allow you to adjust the buffer size, or if adjusting the buffer size in your software does not solve the problem, you may be able to solve the problem by changing the driver’s audio input/output buffer size.
  Try adjusting the buffer size as described in "Changing/checking driver settings."
Try updating the driver of your display adaptor
  You may be able to eliminate clicks and pops by updating the driver for the display adaptor installed in your computer.
Windows Update / Microsoft Update
  You may be able to solve the problem by updating your system with "Windows Update" or "Microsoft Update" provided by Microsoft.
Check the power management settings
  1. Click the start button and then click "Settings()".
  2. Click "System" and then click "Power & sleep".
  3. In Related settings, click "Additional power settings".
  4. In "Choose or customize a power plan," choose "High performance."

     * | If the "High performance" plan is not shown, click "Show additional plans."

  5. In the High performance area, click "Change plan settings."
  6. Click "Change advanced power settings."
  7. In the Advanced Settings, click the “+” symbol for "Hard Disk," and click the “+”symbol for "Turn off hard disk after" to open it.
  8. Click "Setting (Minutes)," and click the down arrow to change the setting to "Never."
  9. Click [OK] to close the Power Options window.
  10. Close the "Edit Plan Settings" screen.
"Performance Options" settings of System Properties
  1. Open File Explorer.
  2. Right-click on "This PC" in the Navigation pane on the left side and select "Properties".
  3. At the left, click "Advanced system settings."
  4. If a dialog box regarding User Account Control appears, click [Yes].

     * | If you are asked to enter the password of an Administrator account, sign in to Windows as a user whose Account Type is Administrator, then perform the settings again.

  5. Click [Settings] of the Performance section, and then click the [Advanced] tab.
  6. Select "Background services," and click [OK].
  7. Click [OK] to close "System Properties."
Could the Windows monitoring function be enabled?
  If the Windows monitoring function is enabled, the input sound might be heard in duplicate (doubled), or a feedback loop (oscillation) might occur.
  If so, disable the Windows monitoring function as follows.
  1. On the Taskbar, right-click the speaker icon() and select "Sounds".
  2. In "Recording," select the device that you're using for input (such as VT-4 "MIX"), and click "Properties."

     * | A problem may have occurred if the devices above cannot be selected. Refer to "Troubleshooting."

  3. Open the "Listen" tab, and clear the check box "Listen to this device."
  4. Click [OK] to close "Properties."
  5. Click [OK] to close "Sound."
Audio clicks and pops occur in the playback or recording immediately after the system has started up, or immediately after the computer has been woken from a Sleep state
  Wait a few moments before you perform playback or recording.
Clicks or pops may occur in the sound if a LAN is operating
  Try disabling the LAN in the Device Manager.

### Playback or recording is interrupted, and then you cannot resume playback or recording

Was your computer experiencing a heavy processing load?
  If your computer was experiencing a heavy processing load while the VT-4 was being used, the VT-4 may no longer operate correctly. If this occurs, stop the playback or recording, then try starting playback or recording over again.
  If you are still unable to play back or record, quit all programs that are using the VT-4, then turn the VT-4 off and then on again.

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