Abstract: An in-wall amplifier assembly includes a wireless communication device and an amplifier located inside a first housing configured for in-wall installation, with the amplifier configured to amplify the audio output from the wireless communication device and supply it to external speakers. An AC/DC adapter located in a second housing can be connected thereto to supply DC power to the amplifier and wireless communication device. The wireless communication device can be removably accommodated in a faceplate of the first housing and held in place by a wall plate installed thereover. The amplifier can accept an external audio input from another source and automatically switch the amplified audio output between the output of the wireless communication device and the external audio input.