Run a free full auditCustom Car Stereo is a car audio shop in Charleston, SC. The business specializes in the expert installation of car audio systems, subwoofers, amplifiers, and marine sound systems. It serves drivers seeking safety and security upgrades as well as owners of marine and powersport vehicles. The shop has been in business since 1978, a period that includes a move from near the old navy base to West Ashley the following year. It currently employs nine staff members and has completed more than 150,000 installations. The original owners were college friends who shared a passion for music, cars, and rock 'n' roll, a spirit that continues under current local owners Garrett and Katie Straughn.
The shop holds one of the highest ratings in the nation for customer service and mobile electronics accreditation. It maintains a strong local reputation, reflected in consistently high customer ratings and an established track record built on a large base of customer reviews. With a rating of 4.80 based on 729 reviews, the business demonstrates a long-standing commitment to quality work in the mobile electronics field.
Located at 1217 Sam Rittenberg Blvd, the shop sits on Sam Rittenberg Boulevard, just a short distance from Old Towne Road. It is about half a mile from Parkshore Park and Mary Utsey Park, and roughly the same distance from the Northbridge and Charlestowne Estates neighborhoods. The store is open Monday through Saturday from 9am to 6pm, closed on Sundays.
Custom Car Stereo combines decades of local experience with a high volume of completed installations, making it a well-established choice for car audio and marine sound needs in Charleston.
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BizScoreAI scanned the website customcarstereosc.com on June 13, 2026. Custom Car Stereo of Charleston has a BizScore of 65 out of 100. The website audit behind the SEO score ran on October 26, 2026.
AI visibility scan by category: AI Discovery 25 of 25 points, Structured Data 8 of 25 points, Content Readiness 15 of 30 points, AI Trust Signals 10 of 20 points.
Website audit sub-scores (out of 100): On-Page 78, Technical 93, Performance 67, Content 25.
Strengths: 7 checks passed. llms.txt, AI Crawler Access, AI Content Blocking, Organization Schema, Q&A Content, Meta Description, XML Sitemap.
Areas to improve: 6 checks. FAQPage Schema (failed), Content Too Thin (failed), Speakable Schema (warning), AI-Parseable Headings (warning), About/Team Page (warning), Author Signals (warning).
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