| Business | Phone |
| Admit One 3700 28th St Se, Grand Rapids 49512 | (616) 956-6909 |
| Audio One Electronics 350 28th St, Grand Rapids 49548 | (616) 245-9502 |
| Classic Stereo & Video 2968 28th St Se, Grand Rapids 49512 | (616) 957-2130 |
| Classic Stereo Ltd 2968 28th St Se, Grand Rapids 49512 | (616) 243-1155 |
| Competition Sound Werks 2882 Shaffer Ave Se A, Grand Rapids 49512 | (616) 940-1160 |
| Extreme Car Audio 2090 28th St Se, Grand Rapids 49508 | (616) 452-3222 |
| Grand River Audio 4057 Plainfield Ave Ne, Grand Rapids 49525 | (616) 447-0500 |
| Kick Auto Sound Specialists 2660 Division Ave S, Grand Rapids 49507 | (616) 245-2161 |
| Plainfield Mobile Audio 5311 Plainfield Ave Ne, Grand Rapids 49525 | (616) 364-1106 |