Introduction: In Brazil, it is rare studies with using deaf children of auditory device above of seven years. Objective: To investigate the benefit supplied for the amplification in deaf children to 7 years old to 11 years old using auditory device, under the perspective of the proper child and the adults with who it more coexists, and to verify if the time of conviviality of the adults with the child intervenes with their answers. Method: One is about a clinical and experimental study. They had participated of the study 48 citizens, divided in 4 distinct groups: G1- 12 deaf children; G2- 12 adults with average companionship of 40 weekly hours with the deaf child; G3- 12 adults with average companionship of 20 weekly hours with the deaf child; G4- 12 adults with average companionship of 10 weekly hours with the deaf child. All the children were using of device bilaterally and presented auditory loss of severe or deep degree. Results: The results indicate damage in the auditory abilities of the children evaluated had to the difficulties faced for them to listen to elements gifts in situations of its daily one. The time of companionship with the child did not have differences in the results between the different groups in agreement. Conclusion: The viability of the evaluation of the proportionate benefit for the auditory device in children was evidenced clinically on the basis of the information of the family. The device of individual sonorous amplification exerted influence in the auditory abilities of the evaluated children, although the proportionate benefit for its use to be lesser of what the waited one.