Вскрывались для проверки состояние новых.
Sony, Panasonic, Bosch, Siemens, LG, Samsung, Philips, Apple, JBL, Sennheiser, Bose, Sony, Beats, Beyerdynamic, AKG, Audio-Technica, Marshall, Shure, Xiaomi, Dyson, Electrolux, Miele, Whirlpool, KitchenAid, De’Longhi, Tefal, Philips, Rowenta, Braun, Kenwood, Bosch, Siemens, LG, Samsung, Panasonic, Hitachi, Toshiba, Sharp, Beko, Indesit, Zanussi, AEG, Gorenje, Smeg, Balmuda, Vitamix, Cuisinart, Breville.
Focal, Grado, Koss, Audeze, Hifiman, Campfire Audio, Final Audio, Etymotic, Westone, InEar, Fischer Amps, Austrian Audio, Technics, Denon, Marantz, FiiO, Fostex, Meze, Noble Audio, QKZ, Moondrop, 7Hz, KZ Acoustics, TRN, ThieAudio, FatFreq.