During decades of success, Manley Labs products have evolved from purist audiophile vacuum tube designs to professional audio and digital converter systems. As the company grew so did the respect their product's garnered in the pro-audio marketplace. The company's design philosophies have been proven through years of real-world experience. Many of Manley's high-quality modern components are produced in-house. Manley Lab's 11,000 sq. ft. building houses a machine shop, printed circuit board manufacturing, audio transformer winding, engraving, and wire harness prepping facilities. All custom design, R&D, assembly, testing, and quality control processes are performed with precision and pride at the Manley factory, located In Chino, CA just 35 miles east of Los Angeles, California. Of note, all Manley products are built in Chino, not China.