Mas, A., Castell, J.V., del Río, J., van der Schaar, M., Delory, E., André, M. A second generation of an autonomous and portable auditory screening system for cetacean clinical and research purposes Proceedings of the 23rd Annual Conference of the European Cetacean Society, Istanbul, Turkey, p.64, Mar 2009 Résumé: While noise is now considered a marine hazard that can directly affect cetaceans and induce a stranding, no clinical approach has yet introduced the detection of a possible hearing loss at a stranding site as a necessary practice. Here we present the second generation of an autonomous and portable auditory screening system for cetacean clinical and research purposes. This system is composed by two independent and autonomous modules that build a more versatile, lighter and radio-magnetically isolated system. The improvement relies on the electromagnetic isolation between modules and the independency of the first one on many situations. The second module will activate only when needed for some frequencies and levels driving high voltage to the transducers thus avoiding interferences with the first module containing the low voltage amplifications system. The tool has been successfully tested for research purposes in captivity dolphins and calibrated for a stranding site diagnoses operation. Projet: eCREM, Effects and Control of Anthropogenic Noise in Marine Ecosystems