With the highest quality double-headed chest-piece, it convinces with its superior acoustics in every situation. Especially in the frequency range between 200 Hz and 500 Hz, which is particularly important for the auscultation of heart sounds, the cardiophon provides unique acoustic performance. In comparison to previous models it was possible to improve the acoustics still further. The cardiophon is suitable for the precise auscultation of adults and children.