The Bluetooth headphone test provides results for 240 headphones with and without earpieces. Which ones sound strong, have good batteries and no harmful substances. New in Stiftung Warentest's headphone comparison: 26 current in-ear and boom headphones. Among them are models from Apple, JBL, Samsung and Sennheiser...

In many test points, the Skullcandy Indy ANC lag behind their competitors. Their musty sound was just as unconvincing as their poor battery life. Music fans don't want to have the true-wireless headphones in their ears for too long anyway. After a while, the earplugs become rather annoying...

Thanks to rubber ear clips that fit snugly in the ear cups, these in-ear earphones hold bombproof. They are therefore also suitable for exuberant sporting activities. The sound was noticeably bass-heavy. The ANC worked well, but showed a slight noise without music. Calibration to your own ears is possible via the app and worked well in the test. There is no manual EQ in the app.