Founded in 1991, Ultrasone has a very similar product style to the brand name, and is good at using precious and rare materials in the materials used in headphones. For example, the shell of the Edition 8 is made of the rare metal "ruthenium", while the Edition 5 uses what is said to be the world's most expensive marsh oak (shipwreck wood), and is produced in a limited edition of 555 pairs. Ultrasone headphones also tend to have a stunted tone, as exemplified by the 2011 VGP Gold Award winner for the Edition 10. Edition 10 is designed for almost all classics and instruments, with an extremely regular lateral soundstage and strong resolution capabilities that make instruments positioned brightly against transparent backgrounds. However, in comparison, the vocal thickness and atmosphere are not excellent compared to competitors of the same level, and it is difficult to make a good partner for pop music. The new model Edition 8EX has added the improved S-LOGIC EX technology, in addition to retaining the ultimate classic high-frequency extension and transient feedback, the vocal thickness is no longer too thin, and the music style adaptation is more extensive, and the current price is about 16000 yuan.