Amplifier Experts specializes in the repair and restoration of vintage amplifiers, receivers, studio signal processors, and tape decks, drawing customers from across the continental United States. Owner Mark Weiss brings a lifetime of electronics experience dating back to the 1960s, and opened the shop to the public in 2011 to fill a growing gap left by retiring repair veterans. Most repairs turn around in a few days to a week — a sharp contrast to the months-long waits customers often report elsewhere.