Telefunken is a historic German electronics brand originally founded in Berlin in 1903 as a joint venture between AEG and Siemens, aimed at wireless telegraphy and radio technology. Over its long history, it became a major force in broadcasting, vacuum tube development, and audio electronics. In the pro-audio world, Telefunken is especially revered for classic microphones like the ELA M 251, U47, and U48. In the early 2000s, the Telefunken name was revived in the audio sphere by Telefunken Elektroakustik, which reverse-engineered and faithfully recreated vintage tube microphones, while also expanding into modern designs. Today, Telefunken bridges its storied past and modern innovation, crafting high-quality recording tools that honour the original legacy.