Grell OAE2
Grell OAE2 is a dynamic open-back headphone with a front-oriented driver. It’s the second headphone in the OAE series by the legendary Axel Grell. His latest invention will set you back 599 USD.
Grell
Drop + Grell TWS1X
Drop + Grell TWS1X is a new TWS IEM by Drop in cooperation with legendary engineer Axel Grell. It uses a 10mm custom dynamic driver and it's priced at $199.