Manley Laboratories, Inc. in recent years has expanded and thrived under EveAnna Manley’s leadership. Our 11,000 sq. ft. building houses our own machine shop, printed circuit board manufacture, audio transformer winding, engraving, and silk-screening facilities. All custom design, R&D, assembly, testing, and quality control processes are performed with precision and pride at the Manley factory, located just 35 miles east of Los Angeles. All MANLEY products are built in Chino, not China.