Founded in 1910 as a supplier of professional recording studios and broadcast equipment, Denon has become a manufacturer of home theater, audio and software products. Tenryu developed and manufactured Japan's first professional record recorder for NHK, and won the "Outstanding Industry Trend Contribution Award" from Billboard magazine in the United States. Denon Audio, which has a long reputation in the field of home theater amplifier products, announced a merger with Marantz on its centennial, and the new company is called D M GROUP. Tianlong's amplifier covers almost all the audio-visual entertainment trend functions except Dolby Atmos, which is very cost-effective and worth recommending.