Also one the famous headphone manufacturer.
Their products including SR-60 SR-80 SR-125 SR-225 SR-325 RS-2 RS-1.
They are in cooperative with the Alessandro Lab making their own ones like the well-known M1, M2 and M-Pro.
Alessandro M1 has a less sense of spatiality due to its open-to-air design.
A Austria manufacturer that makes ones of the most excellent audio equipment in the world, including headphones like K501 and K1000 and microphones.
A well-known example is that the live recording of the Bei-jing Turrandot concert was under the usage of AKG peofessioal mixers and microphones.