Self-powered mountable speaker bar

A self-powered mountable speaker bar comprising:

• a cylindrical housing;
• a first end cap coupled to a first distal end of the cylindrical housing;
• a second end cap coupled to a second distal end of the cylindrical housing;
• a plurality of speakers distributed along a length of the cylindrical housing;
• and
• a rechargeable battery pack coupled to the cylindrical housing.

A media playback system comprising a media playback device that includes:

• a housing;
• a rechargeable battery pack coupled to the housing;
• an audio amplifier that receives power from the rechargeable battery pack and generates a plurality of audio outputs;
• a plurality of speakers, each speaker in the plurality of speakers associated with at least one audio output from the plurality of audio outputs;
• and
• a wireless communication interface that receives media from a connected user device over a wireless communication channel and provides the received media to the audio amplifier.