** Shares in European hearing aid companies fall after Italy's Amplifon AMPF.MI cut its 2025 guidance on Tuesday, reporting a drop in second-quarter core profit
** Shares in Amplifon drop as much as 27% to their lowest since March 2020
** Sonova SOON.S slides 3%, GN GN.CO falls 4.6%, while Demant DEMANT.CO drops almost 9%
** Urs Kunz, an analyst from Research Partners AG, says Amplifon's results were "very disappointing" and links its rivals' share price move to that
** Kunz adds, however, the companies performed better in Q2 and views the reaction as exaggerated
(Reporting by Anastasiia Kozlova)
((Anastasiia.Kozlova@thomsonreuters.com))