Resource
The Speaker Port
Small independent shop in Crest Hill, Illinois, serving the Chicagoland area, specialising in vintage audio repair and restoration. It services speakers, receivers, amplifiers, turntables, tape decks and CD players, and also offers tube testing and parts sales.
Verification sources
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Audiowright Shop
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Columbus, Ohio repair shop established in 1992 by Michael Langhorst, specializing in vintage stereo equipment. Its stated services range from control cleaning to restoration, with in-house work on amplifiers, receivers, turntables, tape decks and other audio components.
Austin Stereo Service
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Austin, Texas analog-audio specialist serving the city since 1983, restoring select 1957–1980 amplifiers, receivers and turntables and servicing some modern turntables. It also sells serviced vintage gear and new Rega, Cambridge Audio, Ortofon and Acoustic Energy products.
Sources
Classic Audio Repair
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Classic City Hi-Fi
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Athens, Georgia repair and restoration service specializing in vintage stereo equipment from the 1960–1980 period. Work is accepted by reservation, with separate evaluation, fault repair and restoration services plus a gallery documenting projects involving McIntosh, Marantz, Pioneer, Yamaha and other equipment.
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Duncan's Audio
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Appointment-only Ottawa service repairing and restoring vintage audio, with selected newer equipment also accepted. Its service pages distinguish amplifier overhauls, turntable work, tube amplifiers and speaker repair, and explain that larger recap projects use a waitlist rather than an immediate drop-off queue.
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US repair business devoted solely to servicing, rebuilding and selling Dual turntables made between 1970 and 1980, backed by a large parts inventory for those models.