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Mopidy extension for controlling volume on a NAD amplifier

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Mopidy extension for controlling volume using an external NAD amplifier. Developed and tested with a NAD C355BEE.

Maintainer wanted

Mopidy-NAD is currently kept on life support by the Mopidy core developers. It is in need of a more dedicated maintainer.

If you want to be the maintainer of Mopidy-NAD, please:

  1. Make 2-3 good pull requests improving any part of the project.

  2. Read and get familiar with all of the project’s open issues.

  3. Send a pull request removing this section and adding yourself as the “Current maintainer” in the “Credits” section below. In the pull request description, please refer to the previous pull requests and state that you’ve familiarized yourself with the open issues.

As a maintainer, you’ll be given push access to the repo and the authority to make releases to PyPI when you see fit.


Install by running:

sudo python3 -m pip install Mopidy-NAD

See for alternative installation methods.


The Mopidy-NAD extension is enabled by default. To disable it, add the following to mopidy.conf:

enabled = false

The NAD amplifier must be connected to the machine running Mopidy using a serial cable.

To use the NAD amplifier ot control volume, set the audio/mixer config value in mopidy.conf to nad. You probably also needs to add some properties to the nad config section.

Supported properties includes:

  • port: The serial device to use, defaults to /dev/ttyUSB0. This must be set correctly for the mixer to work.

  • source: The source that should be selected on the amplifier, like aux, disc, tape, tuner, etc. Leave unset if you don’t want the mixer to change it for you.

  • speakers-a: Set to on or off (or true or false) if you want the mixer to make sure that speaker set A is turned on or off. Leave unset if you don’t want the mixer to change it for you.

  • speakers-b: See speakers-a.

Configuration example with minimum configuration, if the amplifier is available at /dev/ttyUSB0:

mixer = nad

Configuration example with minimum configuration, if the amplifier is available elsewhere:

mixer = nad

port = /dev/ttyUSB3

Configuration example with full configuration:

mixer = nad

port = /dev/ttyUSB0
source = aux
speakers-a = true
speakers-b = false

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