Then people like @Hands and @Marvey wouldn't be able to post reviews here anymore. Manufacturers will sometimes send them shit to look at. ZMF and MrSpeakers as the latest to do so. Schiit sends members here prototype stuff to get feedback on. What your asking would essentially kill forums like this one. Actually the list is probably even bigger. Klipsch, Schiit, ZMF, MrSpeakers, Eddie Current, Massdrop everything, Campfire Audio. Along with many smaller outlets. Many of our tour units over the last couple years were provided by the manufacturer.