Boulder is a top-tier audio brand founded in Colorado, USA in 1984. It is renowned for its exquisite manufacturing process (especially the heavy metal chassis and precision CNC machining) and neutral, transparent, and high-resolution sound. Initially focused on the professional recording market, it later shifted to the home Hi-End market. Its representative products include various series of amplifiers (800/1000/1100/2000/3000). The products are known for their durability, wide soundstage, and realistic sound, making them dream items for many audiophiles and musicians.