Classic Audio Repair, Inc. on La Mesa Boulevard has specialized in the restoration of vintage audio components since 1994, servicing equipment manufactured between 1946 and 1990. The shop's bench work covers tube amplifiers, solid-state receivers, integrated amps, turntables by Technics, Thorens, Pioneer, Sony, and Dual, cassette decks, reel-to-reel transports, boomboxes, and CD players, with wiring and power-supply diagnostics that parallel the residential circuit work at Esd Electrical when vintage installations require dedicated 20-amp outlet runs. Speaker refoaming restores deteriorated surrounds on woofers and mid-range drivers using butyl rubber or foam compounds matched to the original compliance specifications. Tube equipment service includes testing and replacing vacuum tubes, recapping aged electrolytic capacitors, and reflowing cold solder joints on hand-wired point-to-point chassis, work that mid-century home remodelers like Hickory Heart Remodeling coordinate when integrating period audio into restored media rooms. The most complex restorations involve full capacitor-and-resistor rebuilds on 1950s tube receivers, replacing every electrolytic and paper-wax capacitor while preserving original transformers rated to specific impedance and wattage tolerances.