Douk Audio
Douk Audio is also known as Nobsound, and it was founded quite recently in 2013 in Shenzhen, China. They are devoted to researching and creating many high-quality products involving sound. You can get Tube, Digital, and Headphone Amplifiers in their inventory. They are always selling good products at a reasonable price. The company's rules are "Quality Oriented, Customer-Centered, Constant Innovation. The designs of their products are also eye-catching. Douk Audio mixes functionality with style.