| Business | Phone |
| Al & Ed's Autosound Center 880 Rochester Rd, Ontario 91764 | (909) 481-8411 |
| American Stereo Masters 533 W Holt Blvd # A, Ontario 91762 | (909) 983-6762 |
| Audio America 3979 E Guasti Rd # B, Ontario 91761 | (909) 635-0970 |
| Auto Image Plus 1113 W Holt Blvd # C2, Ontario 91762 | (909) 988-8776 |
| Auto Toyz 1702 S Grove Ave # A, Ontario 91761 | (909) 923-7600 |
| Radio Active Auto Sound 11195 S Central Ave # 1, Ontario 91762 | (909) 464-1010 |