A first device (100,200,300;401-406) for reproducing sound, said first device (100,200,300;401-406) having a housing and including: - at least one loudspeaker element for reproducing sound, - first signal processing means for processing a first input signal, to provide a processed signal for reproduction by said at least one loudspeaker element, said first device (100,200,300;401-406) further including: - means for, in use, detecting if there is a presence of at least one second device (100,200,300;401-406) for reproducing sound, - means for, when detecting presence of said at least one second device for reproducing sound, determining a relative location of said at least one second device in relation to said first device (100,200,300;401-406), - said first device being arranged to detect presence of said at least one second device only when a surface of said at least one second device is substantially aligned with a surface of said first device, characterized in said first device comprising means for, when receiving information relating to presence of said at least one second device, determining a relative location of said first device in relation to the at least one second device for which information is received, - said processing means being arranged to process said first input signal based on the result of said detection of presence of said at least one second device, and the relative location of the first device in relation to said at least one second device for which information is received so as to provide a processed signal being dependent on said detection of presence of said at least one second device and the relative location of the first device in relation to the at least one second device for which information is received to said at least one loudspeaker element, and - when detecting presence of at least one second device and a third device for reproducing sound, - communicating information relating to said presence of said third device to said second device, and/or communicating information relating to said presence of said second device to said third device. - at least one loudspeaker element for reproducing sound, - first signal processing means for processing a first input signal, to provide a processed signal for reproduction by said at least one loudspeaker element, said first device (100,200,300;401-406) further including: - means for, in use, detecting if there is a presence of at least one second device (100,200,300;401-406) for reproducing sound, - means for, when detecting presence of said at least one second device for reproducing sound, determining a relative location of said at least one second device in relation to said first device (100,200,300;401-406), - said first device being arranged to detect presence of said at least one second device only when a surface of said at least one second device is substantially aligned with a surface of said first device, - said processing means being arranged to process said first input signal based on the result of said detection of presence of said at least one second device, and the relative location of the first device in relation to said at least one second device for which information is received so as to provide a processed signal being dependent on said detection of presence of said at least one second device and the relative location of the first device in relation to the at least one second device for which information is received to said at least one loudspeaker element, and - when detecting presence of at least one second device and a third device for reproducing sound, - communicating information relating to said presence of said third device to said second device, and/or communicating information relating to said presence of said second device to said third device. <EOS>