Difference between revisions of "MOD Duo User Guide"

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This first chapter describes the MOD Duo in high detail. You will find information about the physical device, the device menu and how to control it, and how to hook up the device in your setup.
 
This first chapter describes the MOD Duo in high detail. You will find information about the physical device, the device menu and how to control it, and how to hook up the device in your setup.
  
−
[[File:device_turnedon.jpg|450px|thumb|The MOD Duo when powered up]]
+
[[File:mod-duo.png|450px|thumb|The MOD Duo when powered up]]
 
[[File:device_main.jpg|450px|thumb|Side-shot of the MOD Duo]]
 
[[File:device_main.jpg|450px|thumb|Side-shot of the MOD Duo]]
 +
 +
=Warnings=
 +
 +
* Don't expose the MOD Duo to liquids, although it has been manufactured to prevent death-by-beer, it's generally a good idea not to submerge electronics in liquids.
 +
* When inserting the USB-B cable into the MOD Duo, make sure that you are not accidentally plugging it into the Control Chain socket, this can cause a short-circuit.
 +
* Don't connect the MOD Duo's Control Chain port to a regular Ethernet port, it uses a very different protocol, and may damage your MOD Duo.
 +
* To power up the MOD Duo, only use a 12V-DC, center-positive adapter. Using a reverse polarity adapter (like the average guitar pedal adapter) may destroy the circuitry of the MOD Duo. When in doubt, only use the provided power supply.
 +
* When connecting output 1/2 to unbalanced equipment, only do this using mono cables. When you use stereo cables, the MOD Duo works in balanced mode, which may or may not be harmful for your equipment.
 +
  
 
=Overview=
 
=Overview=
 
The wireframe images below expose the controls and inputs/outputs that the MOD Duo has.  
 
The wireframe images below expose the controls and inputs/outputs that the MOD Duo has.  
  
−
[[File:device_wireframe_top.png|600px|thumb|none|Wireframe of the top-view, exposing the two footswitch-LED-pairs, the two knobs, the two displays, the two inputs with peak-LEDs, two outputs with peak-LEDs and the headphone output]]
+
[[File:duo-overview.png]]
−
[[File:device_wireframe_back.png|600px|thumb|none|Wireframe of the back-view, exposing the power supply input, control-chain port, USB-A host port, USB-B slave port and a DIN-MIDI input/output pair]]
 
  
 
=Device features=
 
=Device features=
Line 14: Line 22:
  
 
==Inputs and outputs==
 
==Inputs and outputs==
−
===Audio inputs===
 
−
The MOD Duo has two independant audio inputs, with configurable input gain for each input. You can set up the input gain through the device menu.
 
  
−
===Audio outputs===
+
[[File:duo-manual-2.png]]
−
The MOD Duo has two independant audio outputs, with configurable output gain for each outut. You can set up the output gain through the device menu.  
+
 
 +
To ensure a safe connection, follow the steps below.
 +
 
 +
# Turn down the volume of your amp and connect it to the OUTPUT jack(s)
 +
# Connect your instrument(s) to the INPUT jack(s)
 +
# Turn on the MOD Duo by plugging in its power adapter
 +
# Wait until the MOD Duo boots up
 +
 
 +
 
 +
===Inputs jacks===
 +
The MOD Duo has two independent audio inputs, with configurable input gain for each input. You can set up the input gain through the device menu.
 +
 
 +
===Output jacks===
 +
The MOD Duo has two independent audio outputs, with configurable output gain for each output. You can set up the output gain through the device menu.
  
−
===Headphone output===
+
===Headphone jack===
 
The headphone output on the MOD Duo usually monitors output 1 and 2, although it can also be set up to monitor the inputs directly through the device menu. It is also possible to set the volume level of the headphone output through the device menu.  
 
The headphone output on the MOD Duo usually monitors output 1 and 2, although it can also be set up to monitor the inputs directly through the device menu. It is also possible to set the volume level of the headphone output through the device menu.  
  
−
===Power input===
+
===Power jack===
−
The MOD Duo comes with its own approved power supply which outputs 12V, 2A over a center-positive barrel-type plug.  
+
The MOD Duo comes with its own approved power supply which outputs 12V, 2A over a center-positive barrel-type plug.
 +
 
 +
In order to work, the MOD Duo requires at least 12W, 1.5A although this can cause problems when you connect Control Chain devices or other controllers. You also need to pay attention to the polarity of your plug, it must be central positive.
 +
 
 +
The plug diameter of the power supply must be Φ5.5*2.1*10mm
  
−
TODO: Add plug dimensions, minimum power requirements
+
Power supplies such as this are capable to power the MOD DUO.
  
−
The power consumption of the MOD Duo varies depending on the peripherals connected to the device. For example: Hooking up a USB-hub to the USB-A port, and then hooking up multiple MIDI controllers to the hub will change the power requirements. By using the provided power supply you are sure that you will never run out of juice.  
+
In summary, the power consumption of the MOD Duo varies depending on the peripherals connected to the device. For example: Hooking up a USB-hub to the USB-A port, and then hooking up multiple MIDI controllers to the hub will change the power requirements.
  
−
===Control chain===
+
'''By using the provided power supply you are sure that you will never run out of juice.'''
−
TODO: explain use for CC, advantage over MIDI
 
  
−
NOTE: Please do NOT connect this port to a regular Ethernet port, it can damage your MOD Duo.
+
===Control Chain port===
 +
MOD Control Chain devices (such as the [https://www.moddevices.com/products/mod-footswitch MOD Footswitch]) have multiple benefits over MIDI Controllers.
  
−
===USB-A host===
+
MOD Control Chain devices have screens that show you on demand what each of the footswitches or actuators is assigned to control.
 +
 
 +
You can daisy chain up to 8 Control Chain devices (this was the maximum we tested) using a single cable from one Control Chain device to the other.
 +
 
 +
MOD Control Chain devices use an open protocol, what means that you and all our community can contribute to improve it. You can also use the [https://www.moddevices.com/products/arduino-shield Arduino Shield] and build your own Control Chain device.
 +
 
 +
Last but not least, Control Chain devices also allow you to have more resolution from your actuators than the current MIDI Controllers.
 +
 
 +
'''NOTE: Please do NOT connect this port to a regular Ethernet port, it can damage your MOD Duo.'''
 +
 
 +
===USB Host port===
 
In the most common scenario, this port is used to hook up a single USB-MIDI device, such as a MIDI-keyboard to control generator plugins.
 
In the most common scenario, this port is used to hook up a single USB-MIDI device, such as a MIDI-keyboard to control generator plugins.
  
Line 42: Line 75:
 
NOTE: The port can also be split up into multiple ports using a USB-hub for connecting multiple USB devices to the MOD Duo.
 
NOTE: The port can also be split up into multiple ports using a USB-hub for connecting multiple USB devices to the MOD Duo.
  
−
===USB-B slave===
+
===USB computer port===
−
This port is mostly used to connect the MOD Duo to your PC for setting it up. When executing a manual system update, its use changes to a mass-storage device, so that you can copy the update-file to the MOD Duo.
+
This port is mostly used to connect the MOD Duo to your PC for setting it up. When executing a manual system update, this port turns the MOD Duo into a mass-storage device, so that you can copy the update-file to the device.
  
−
===DIN-MIDI===
+
===DIN-MIDI I/O===
 
Finally, the MOD Duo also supports old-school DIN-MIDI devices, simply hook up your DIN-MIDI device to the appropriate port on the back and enjoy!
 
Finally, the MOD Duo also supports old-school DIN-MIDI devices, simply hook up your DIN-MIDI device to the appropriate port on the back and enjoy!
  
Line 51: Line 84:
 
The two knobs and two footswitches make up the actuators that are present on every MOD Duo.
 
The two knobs and two footswitches make up the actuators that are present on every MOD Duo.
  
 +
===Knobs===
 
The two knobs are used to access and navigate the device menu and tuner. They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.  
 
The two knobs are used to access and navigate the device menu and tuner. They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.  
−
===General knob actions===
+
 
 +
====General knob actions====
 
*Turn a knob to change the value of the parameter assigned to it
 
*Turn a knob to change the value of the parameter assigned to it
 
*Press a knob to cycle through the list of parameters assigned to it
 
*Press a knob to cycle through the list of parameters assigned to it
−
===Left knob actions===
+
 
−
*Hold the left knob to access and exit the device menu
+
====Left knob actions====
 +
*Press and hold the left knob to access and exit the [[Device Settings]] menu
 
*Turn the left knob to scroll through the device menu
 
*Turn the left knob to scroll through the device menu
−
*Press the left knob to enter the selected sub-menu or toggle the selected option
+
*Press the left knob to toggle the selected option
−
===Right knob actions===
+
 
−
*Hold the right knob to access and exit the tuner
+
====Right knob actions====
 +
*Press and hold the right knob to access and exit the tuner
 
*Press the right knob to change the input that the tuner is used for
 
*Press the right knob to change the input that the tuner is used for
 +
*While on the [[Device Settings]] menu, press the right knob to get in sub-menus and toggle selected options visible on the right screen.
  
 +
===Footswitches===
 
The two footswitches can be used to navigate through the pedalboards that are inside a bank (when set up that way). They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.
 
The two footswitches can be used to navigate through the pedalboards that are inside a bank (when set up that way). They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.
−
===General footswitch actions===
+
 
 +
====General footswitch actions====
 
*Press the footswitch to change the value of the parameter mapped to it
 
*Press the footswitch to change the value of the parameter mapped to it
−
===Switching pedalboards with the footswitches===
+
 
−
When switching pedalboards with the footswitches is enabled through the web interface:
+
====Switching pedalboards with the footswitches====
 +
When switching pedalboards with the footswitches is enabled:
 
*Press the left footswitch to load the previous pedalboard in the active bank
 
*Press the left footswitch to load the previous pedalboard in the active bank
 
*Press the right footswitch to load the next pedalboard in the active bank
 
*Press the right footswitch to load the next pedalboard in the active bank
  
 
==Displays==
 
==Displays==
−
The MOD Duo sports two large (2.8") LCD displays. The displays normally give dynamic information about the actions mapped to the device actuators, but they are also used for displaying the device menu and tuner.
+
The MOD Duo has two large (2.8") LCD displays. The displays normally give dynamic information about the actions mapped to the device actuators, but they are also used for displaying the device menu and tuner.
  
 
==Dimensions==
 
==Dimensions==
−
*width: 180 mm
+
*width: 160 mm
−
*length: 160 mm
+
*length: 186 mm
−
*height: 74.7 mm
+
*height: 75 mm
  
−
==Audio flow==
+
==LED Audio meters==
−
The graphic below represents the signal-flow of the audio inside the MOD Duo.
 
  
−
[[File:Device_audioflow.jpg|thumb|none|700px|Audio flow inside the MOD Duo]]
+
From the v1.9 onwards the LEDs have smooth transitions between colours. The LED colours represent the following input levels:
  
−
Please note the position where the LED meters read from.
+
*Off: below -40dB
 +
*Green fade in: between -40dB and -6dB
 +
*Green fully ON, fading in yellow: between -6dB and -1dB
 +
*Red: between -1dB and 0dB
 +
*Blinking strong red: 0dB (CLIPPING!)
  
−
The LED colors represent the following input levels:
+
=Adjusting Volumes=
  
−
*Off: below -30dB
+
MOD Duo allows each input and output volume to be individually adjusted.
−
*Green: between -30dB and -12dB
+
 
−
*Yellow: between -12dB and -3dB
+
Please refer to the [[Device_Settings#Inputs|Inputs and Outputs Device Settings section]] in the wiki for more information on that.
−
*Red: above -3dB
+
 
−
*Blinking strong red: 0dB (CLIPPING!)
+
=Tuning=
 +
 
 +
[[File:DUOX-Tuner.png | 400px]]
 +
 
 +
MOD Duo has a built-in chromatic tuner that can be accessed by pressing and holding the right knob for one second. Both inputs can be used as the tuner input, to select between them short press the right knob. To exit the tuner press and hold the right knob for one second.
 +
 
 +
If you see a question mark on the tuner screen, it means the MOD Duo is not receiving any input or the input levels are too low.
  
−
Important conclusions:
+
Please refer to the [[Device_Settings#Tuner|Tuner section in the Device Settings page]] for more information.
  
−
*The [[Chapter_1:_Device#Volume_and_gains|input gains accessible via the menu]] - both stage and fine adjust - determine the level of the analog signal coming to the ADC. This is 100% analog.
+
=Playing=
−
*The [[Chapter_1:_Device#Volume_and_gains|output volume accessible via the menu]] does not affect the running pedalboard and can't help in case it is clipping. You can solve clipping by reducing the volume inside the pedalboard.
 
  
−
=Device menu (HMI)=
+
After you have powered on and adjusted the volumes of your MOD Duo, it is time for playtime. The MOD Duo comes with many pedalboards ready to be used. They are organized in banks and can be accessed via '''SETTINGS''' menu.  
−
The device menu, or as we call it, HMI (Human Machine Interface), allows you to change settings on the MOD Duo. It also allows you to access different banks, pedalboards and the tuner.
 
  
−
The device menu can be accessed by holding down the left knob for one second.  
+
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:DUO-Settings_Banks.png | 400px]]
 +
|}
 +
</div>
 +
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:DUOX-Banks-AllPedalboards.png | 400px]]
 +
|}
 +
</div>
  
−
Navigation is done by rotating the left knob until the desired section is highlighted. Click on the left knob to enter the highlighted section.
 
  
−
When you are done, you can either navigate to "Back to SETTINGS" and click on the left knob to go back to the device menu. Or you can hold down the left knob for one second to exit without going back to the device menu.  
+
Please refer to the [[Device_Settings#Banks|Banks section on the Device Settings page]] for more information.
  
−
==Banks==
+
When you load a pedalboard, all plugin parameters will have the last saved state. You can save a new state or restore the last saved state using the [[Device_Settings#Current_Pedalboard|Settings > Current Pedalboard]] menu.
−
If you want to use the MOD Duo without being connected to a computer, this is a very important section.
 
  
−
Upon entering this section, you will see the banks that you have created using the web interface, as well as a bank that contains all your pedalboards, named "All".
+
=Device Settings=
  
−
By navigating to a bank and clicking on the left button, you can browse the pedalboards within that bank. Navigate to the pedalboard of your choice and click the left button to load that pedalboard, and make the bank the currently active bank.  
+
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:DUO-Settings_HardwareBypass.png | 400px]]
 +
|}
 +
</div>
 +
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:HardwareBypass.png | 400px]]
 +
|}
 +
</div>
  
−
From this point onwards, you can use multiple ways of navigating through the pedalboards in the active bank:
+
Pressing and hold the left endless knob will open the Device Settings menu.
−
# Repeat the procedure to navigate to and select a different pedalboard
 
−
# Use the footswitches on the MOD Duo to cycle through the pedalboards inside the currently active bank (only if set up through the web interface)
 
−
# Use MIDI program changes to select the currently active bank (only if set up through the web interface)
 
  
−
==Current pedalboard==
+
Access the [[Device Settings]] page to learn how to use it to Load Banks and Pedalboards, adjust volumes and MIDI Settings, manage User profiles and more.
−
If you have made some changes to some parameters of your pedalboard, and you want to save those changes for the next time you load the pedalboard, you can enter this menu and select and click on "Save State". This is especially useful for use without a computer.  
 
  
−
If you have made some changes, but you are not quite happy with the result, there is also a "Reset State" command. This command will return your pedalboard to the original saved state.
+
=Editing=
  
−
==Volume and gains==
+
==Accessing the graphical interface==
−
This section allows you to set the gain for the inputs and level of the outputs. The headphone has its own section, so check out the "Headphone" section for information about the headphone volume levels and settings.
 
  
−
When you notice that the LED's at the input side are blinking bright red, that means that your input signal is "clipping". In general, that is not a desired condition. Luckily, it can easily be resolved by lowering the input gain. Try a different gain-stage for the clipping input, or use the "Fine Adjust" option to take smaller steps.
+
The MOD Duo has a built-in graphical user interface (GUI), which means you don’t need to download any extra software in order to configure the device. To access the interface, you only need a web browser, such as Chrome, Safari or Firefox.
  
−
The gain stages represent the following input gain:
+
Once you are connected to your device you will be able to build and share your pedalboards, download new plugins, organize your banks for offline access and much more.
−
*Low: -22.0 dBu
 
−
*Medium: -9.5 dBu
 
−
*High: +3.0 dBu
 
  
−
For the outputs there is only a simple volume control, going from 0 (unity gain) all the way down to -127.0 dBu. It is recommended to keep the outputs set to unity gain, and resolving clipping on the outputs by reducing the gain in the pedalboard.
+
Please refer to the [[Chapter 2: Web interface|Web GUI User Guide]] to learn all about it.
  
−
==Headphone==
+
[[File:MOD_pedalboard.png|thumb|none|680px|Overview shot of the pedalboard builder in the web interface]]
−
In this section you can change the settings for the headphone output.
 
  
−
By entering the "Volume" sub-menu you can set the volume from -33dBu to +12dBu.
+
==Accessing via USB cable==
  
−
By enabling the "Direct monitoring" option, your headphone output will work as a monitor for the dry sound coming into the MOD Duo.
+
The easiest way to access the GUI is through the USB cable. Simply connect the USB cable, which you received along with your MOD Duo, to your PC or Mac. The operating system should recognize the MOD Duo as a network device and configure it automatically. However, this process may fail in certain Windows versions, if that is your case please check the [[Troubleshooting|troubleshooting page]]
  
−
==Bluetooth==
+
After successfully connecting the MOD Duo to your PC or Mac, open your favorite browser and navigate to http://modduo.local (or http://192.168.51.1).
−
This section allows you to check the status of, and set up your Bluetooth connection.
 
  
−
TODO: insert connection routine
 
  
−
NOTE: in order to use Bluetooth it is required to insert a Bluetooth dongle (version 3.0 or higher) in the USB A port of the MOD Duo.
+
==Accessing via Bluetooth==
  
−
==Info==
+
[[File:DUOX-System-Bluetooth.png | 400px]]
−
This section serves to give you information about the services running, the versions of the different pieces of software running on your MOD Duo, as well as the serial number attached to your MOD Duo.  
 
  
−
Enter the "Services" sub-menu to see the activated services:
+
It is also possible to connect to your computer using a wireless Bluetooth connection. Check [[Bluetooth|this page]] to learn how to do it!
−
*jack
 
−
*mod-host
 
−
*mod-ui
 
−
*ttymidi
 
  
−
Enter the "Versions" sub-menu to see the versions of:
+
=True Bypass=
−
*release
 
−
*restore (hexadecimal)
 
−
*system (hexadecimal)
 
−
*controller (hexadecimal)
 
  
−
Enter the "Device" sub-menu to see the serial number of your MOD Duo.
+
MOD Duo has a true bypass circuit for each pair of input/output. This allows you to physically connect input 1 to output 1, and input 2 to output 2. The true bypass is enabled when the device is off and it is automatically disabled after the current pedalboard is loaded.
  
−
==Tuner==
+
You can enable or disable the true bypass via the GUI, or use a plugin and assign this control to any actuator. See the [[MOD_Web_GUI_User_Guide|Web GUI User Guide]] for more info.
−
By holding down the right knob for one second, you will go into tuner mode.
 
  
−
Changing the input being tuned can be done by clicking on the right knob once. By default the tuner is set to tune input 1.
+
You can also enable it via the Device Settings menu. Check [[Device_Settings#Hardware_Bypass|Hardware bypass section on Device Settings page]] for more info.
  
−
Exiting the tuner is done by holding down the right knob for one second again.
+
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:DUO-Settings_HardwareBypass.png | 400px]]
 +
|}
 +
</div>
 +
<div style="display:inline-block">
 +
{|
 +
|-
 +
| [[File:HardwareBypass.png | 400px]]
 +
|}
 +
</div>
  
 
=Hooking up the MOD Duo=
 
=Hooking up the MOD Duo=
−
The MOD Duo has two completely independant inputs and outputs, as well as support for regular DIN-MIDI as well as USB-MIDI devices. It quickly becomes clear that many different possibilities exist for hooking up the MOD Duo in your setup.  
+
The MOD Duo has two completely independent inputs and outputs, as well as support for regular DIN-MIDI and USB-MIDI devices. It quickly becomes clear that many different possibilities exist for hooking up the MOD Duo in your setup.  
  
−
In general, there are two scenarios for hooking up the MOD:
+
In general, there are two scenarios for hooking up the MOD Duo:
 
# At setup time, with a computer connected to create new pedalboards
 
# At setup time, with a computer connected to create new pedalboards
 
# For live use, possibly without a computer connected
 
# For live use, possibly without a computer connected
  
−
For the first scenario, the only connection that you need to make is from the USB B port on the MOD Duo to your computer. (Bluetooth is possible in case that is preferred)
+
For the first scenario, the only connection that you need to make is from the USB B port on the MOD Duo to your computer. (Bluetooth is possible in case that is preferred. Check [[Bluetooth|here]] how to do it)
  
−
For the second scenario, it is possible to remove the connection to the computer completely, the MOD Duo works perfectly fine as a standalone device!
+
For the second scenario, it is possible to remove the connection to the computer completely, the MOD Duo works perfectly fine as a standalone device!
  
 
==Wiring examples==
 
==Wiring examples==

Latest revision as of 16:39, 16 November 2020

This first chapter describes the MOD Duo in high detail. You will find information about the physical device, the device menu and how to control it, and how to hook up the device in your setup.

The MOD Duo when powered up
Side-shot of the MOD Duo

Warnings

  • Don't expose the MOD Duo to liquids, although it has been manufactured to prevent death-by-beer, it's generally a good idea not to submerge electronics in liquids.
  • When inserting the USB-B cable into the MOD Duo, make sure that you are not accidentally plugging it into the Control Chain socket, this can cause a short-circuit.
  • Don't connect the MOD Duo's Control Chain port to a regular Ethernet port, it uses a very different protocol, and may damage your MOD Duo.
  • To power up the MOD Duo, only use a 12V-DC, center-positive adapter. Using a reverse polarity adapter (like the average guitar pedal adapter) may destroy the circuitry of the MOD Duo. When in doubt, only use the provided power supply.
  • When connecting output 1/2 to unbalanced equipment, only do this using mono cables. When you use stereo cables, the MOD Duo works in balanced mode, which may or may not be harmful for your equipment.


Overview

The wireframe images below expose the controls and inputs/outputs that the MOD Duo has.

Duo-overview.png

Device features

The following sub-sections give information about the different physical device features: the inputs, outputs, actuators, displays and finally the dimensions of the device.

Inputs and outputs

Duo-manual-2.png

To ensure a safe connection, follow the steps below.

  1. Turn down the volume of your amp and connect it to the OUTPUT jack(s)
  2. Connect your instrument(s) to the INPUT jack(s)
  3. Turn on the MOD Duo by plugging in its power adapter
  4. Wait until the MOD Duo boots up


Inputs jacks

The MOD Duo has two independent audio inputs, with configurable input gain for each input. You can set up the input gain through the device menu.

Output jacks

The MOD Duo has two independent audio outputs, with configurable output gain for each output. You can set up the output gain through the device menu.

Headphone jack

The headphone output on the MOD Duo usually monitors output 1 and 2, although it can also be set up to monitor the inputs directly through the device menu. It is also possible to set the volume level of the headphone output through the device menu.

Power jack

The MOD Duo comes with its own approved power supply which outputs 12V, 2A over a center-positive barrel-type plug.

In order to work, the MOD Duo requires at least 12W, 1.5A although this can cause problems when you connect Control Chain devices or other controllers. You also need to pay attention to the polarity of your plug, it must be central positive.

The plug diameter of the power supply must be Φ5.5*2.1*10mm

Power supplies such as this are capable to power the MOD DUO.

In summary, the power consumption of the MOD Duo varies depending on the peripherals connected to the device. For example: Hooking up a USB-hub to the USB-A port, and then hooking up multiple MIDI controllers to the hub will change the power requirements.

By using the provided power supply you are sure that you will never run out of juice.

Control Chain port

MOD Control Chain devices (such as the MOD Footswitch) have multiple benefits over MIDI Controllers.

MOD Control Chain devices have screens that show you on demand what each of the footswitches or actuators is assigned to control.

You can daisy chain up to 8 Control Chain devices (this was the maximum we tested) using a single cable from one Control Chain device to the other.

MOD Control Chain devices use an open protocol, what means that you and all our community can contribute to improve it. You can also use the Arduino Shield and build your own Control Chain device.

Last but not least, Control Chain devices also allow you to have more resolution from your actuators than the current MIDI Controllers.

NOTE: Please do NOT connect this port to a regular Ethernet port, it can damage your MOD Duo.

USB Host port

In the most common scenario, this port is used to hook up a single USB-MIDI device, such as a MIDI-keyboard to control generator plugins.

Another common scenario is using this port to hook up a Bluetooth dongle for wireless connection to your PC.

NOTE: The port can also be split up into multiple ports using a USB-hub for connecting multiple USB devices to the MOD Duo.

USB computer port

This port is mostly used to connect the MOD Duo to your PC for setting it up. When executing a manual system update, this port turns the MOD Duo into a mass-storage device, so that you can copy the update-file to the device.

DIN-MIDI I/O

Finally, the MOD Duo also supports old-school DIN-MIDI devices, simply hook up your DIN-MIDI device to the appropriate port on the back and enjoy!

Actuators

The two knobs and two footswitches make up the actuators that are present on every MOD Duo.

Knobs

The two knobs are used to access and navigate the device menu and tuner. They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.

General knob actions

  • Turn a knob to change the value of the parameter assigned to it
  • Press a knob to cycle through the list of parameters assigned to it

Left knob actions

  • Press and hold the left knob to access and exit the Device Settings menu
  • Turn the left knob to scroll through the device menu
  • Press the left knob to toggle the selected option

Right knob actions

  • Press and hold the right knob to access and exit the tuner
  • Press the right knob to change the input that the tuner is used for
  • While on the Device Settings menu, press the right knob to get in sub-menus and toggle selected options visible on the right screen.

Footswitches

The two footswitches can be used to navigate through the pedalboards that are inside a bank (when set up that way). They can also be freely mapped to the parameters of the plugins running inside the MOD Duo, through the web interface.

General footswitch actions

  • Press the footswitch to change the value of the parameter mapped to it

Switching pedalboards with the footswitches

When switching pedalboards with the footswitches is enabled:

  • Press the left footswitch to load the previous pedalboard in the active bank
  • Press the right footswitch to load the next pedalboard in the active bank

Displays

The MOD Duo has two large (2.8") LCD displays. The displays normally give dynamic information about the actions mapped to the device actuators, but they are also used for displaying the device menu and tuner.

Dimensions

  • width: 160 mm
  • length: 186 mm
  • height: 75 mm

LED Audio meters

From the v1.9 onwards the LEDs have smooth transitions between colours. The LED colours represent the following input levels:

  • Off: below -40dB
  • Green fade in: between -40dB and -6dB
  • Green fully ON, fading in yellow: between -6dB and -1dB
  • Red: between -1dB and 0dB
  • Blinking strong red: 0dB (CLIPPING!)

Adjusting Volumes

MOD Duo allows each input and output volume to be individually adjusted.

Please refer to the Inputs and Outputs Device Settings section in the wiki for more information on that.

Tuning

DUOX-Tuner.png

MOD Duo has a built-in chromatic tuner that can be accessed by pressing and holding the right knob for one second. Both inputs can be used as the tuner input, to select between them short press the right knob. To exit the tuner press and hold the right knob for one second.

If you see a question mark on the tuner screen, it means the MOD Duo is not receiving any input or the input levels are too low.

Please refer to the Tuner section in the Device Settings page for more information.

Playing

After you have powered on and adjusted the volumes of your MOD Duo, it is time for playtime. The MOD Duo comes with many pedalboards ready to be used. They are organized in banks and can be accessed via SETTINGS menu.

DUO-Settings Banks.png
DUOX-Banks-AllPedalboards.png


Please refer to the Banks section on the Device Settings page for more information.

When you load a pedalboard, all plugin parameters will have the last saved state. You can save a new state or restore the last saved state using the Settings > Current Pedalboard menu.

Device Settings

DUO-Settings HardwareBypass.png
HardwareBypass.png

Pressing and hold the left endless knob will open the Device Settings menu.

Access the Device Settings page to learn how to use it to Load Banks and Pedalboards, adjust volumes and MIDI Settings, manage User profiles and more.

Editing

Accessing the graphical interface

The MOD Duo has a built-in graphical user interface (GUI), which means you don’t need to download any extra software in order to configure the device. To access the interface, you only need a web browser, such as Chrome, Safari or Firefox.

Once you are connected to your device you will be able to build and share your pedalboards, download new plugins, organize your banks for offline access and much more.

Please refer to the Web GUI User Guide to learn all about it.

Overview shot of the pedalboard builder in the web interface

Accessing via USB cable

The easiest way to access the GUI is through the USB cable. Simply connect the USB cable, which you received along with your MOD Duo, to your PC or Mac. The operating system should recognize the MOD Duo as a network device and configure it automatically. However, this process may fail in certain Windows versions, if that is your case please check the troubleshooting page

After successfully connecting the MOD Duo to your PC or Mac, open your favorite browser and navigate to http://modduo.local (or http://192.168.51.1).


Accessing via Bluetooth

DUOX-System-Bluetooth.png

It is also possible to connect to your computer using a wireless Bluetooth connection. Check this page to learn how to do it!

True Bypass

MOD Duo has a true bypass circuit for each pair of input/output. This allows you to physically connect input 1 to output 1, and input 2 to output 2. The true bypass is enabled when the device is off and it is automatically disabled after the current pedalboard is loaded.

You can enable or disable the true bypass via the GUI, or use a plugin and assign this control to any actuator. See the Web GUI User Guide for more info.

You can also enable it via the Device Settings menu. Check Hardware bypass section on Device Settings page for more info.

DUO-Settings HardwareBypass.png
HardwareBypass.png

Hooking up the MOD Duo

The MOD Duo has two completely independent inputs and outputs, as well as support for regular DIN-MIDI and USB-MIDI devices. It quickly becomes clear that many different possibilities exist for hooking up the MOD Duo in your setup.

In general, there are two scenarios for hooking up the MOD Duo:

  1. At setup time, with a computer connected to create new pedalboards
  2. For live use, possibly without a computer connected

For the first scenario, the only connection that you need to make is from the USB B port on the MOD Duo to your computer. (Bluetooth is possible in case that is preferred. Check here how to do it)

For the second scenario, it is possible to remove the connection to the computer completely, the MOD Duo works perfectly fine as a standalone device!

Wiring examples

In the sections below you can find examples of setups that use the MOD Duo, split up into different categories.

Guitar

TODO: Add typical use cases with guitar

  1. in front of single amp, as stompbox
  2. in front of, and in fx loop of single amp
  3. into PA, with amp+cabsim on mod
  4. semi-accoustic setup

Vocals

TODO: Add typical use cases with vocals

  1. MIC -> MOD -> DI -> PA
  2.  ?

Keys

TODO: Add typical use cases with keys

  1. HW Synth -> MOD
  2. ePiano -> MOD
  3. keyboard -> MOD

MIDI

TODO: Add typical use cases with MIDI devices

  1. MIDI Keyboard/controller -> MOD -> OUT
  2. MIDI Keyboard/controller -> MOD -> HW Synth -> OUT
  3. MIDI Grid-controller -> MOD

Exotic

TODO: Add exotic use cases

  1. Chapman stick
  2. Wind instruments
  3. Accoustic instruments
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