An audio decoder (100; 200) for providing a decoded audio signal representation (112; 212) on the basis of an encoded audio signal representation (110; 210; 312;412;550; 600;700;800), wherein the audio decoder is configured to adjust decoding parameters in dependence on a configuration information (110a;222c;332;424; 1010, 1030), wherein the audio decoder is configured to decode one or more audio frames using a current configuration information (140;240), and wherein the audio decoder is configured to compare a configuration information (110a;222c;332;424; 1010, 1030) in a configuration structure associated with one or more frames to be decoded, with the current configuration information (140;240), and to make a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion (1020a,1020b,1022a,1024a,1024b,1026a,1050a) of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the audio decoder is configured to consider a stream identifier information (230; streamID, 1050a, stream Identifier) included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired by the audio decoder and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the configuration structure comprises a configuration extension structure, and wherein the configuration extension structure comprises the stream identifier information. wherein the audio decoder is configured to adjust decoding parameters in dependence on a configuration information (110a;222c;332;424; 1010, 1030), wherein the audio decoder is configured to decode one or more audio frames using a current configuration information (140;240), and wherein the audio decoder is configured to compare a configuration information (110a;222c;332;424; 1010, 1030) in a configuration structure associated with one or more frames to be decoded, with the current configuration information (140;240), and to make a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion (1020a,1020b,1022a,1024a,1024b,1026a,1050a) of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the audio decoder is configured to consider a stream identifier information (230; streamID, 1050a, stream Identifier) included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired by the audio decoder and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the configuration structure comprises a configuration extension structure, and wherein the configuration extension structure comprises the stream identifier information.