Weiss
Weiss Engineering Ltd. was founded in 1985 by Daniel Weiss, an electronics engineer, with a specific focus on the design and manufacture of digital audio equipment for mastering studios. Their products have been used to mix and master many music recordings, and in 2000 Weiss expanded into the high-end audiophile market. With Weiss, you know you'll be hearing music just like in the studio.
To learn more, check out this introduction to Weiss and a selection of professional reviews.