Established in 2019, Greenwood Amplifiers is a full service repair shop and custom audio equipment manufacturer based in Des Moines, Iowa. It’s repair services range from regular maintenance to complete museum quality restorations. Serving as savior to vintage audio equipment, each project is completed in close collaboration with the customer themselves, to achieve specific goals and sounds. Greenwood Amplifiers is located at 4211 Chamberlain Ave. Des Moines, Iowa 50311 in the historic Roosevelt Cultural District.

In addition to its restoration services, Greenwood offers its design and production services to create custom amplifiers and pre-amplifiers for a wide range of artists, producers, and hobbyists.