| Business | Phone |
| Buday's Sound Advice-South 303 N Rose St, Kalamazoo 49007 | (269) 492-1008 |
| Crookston Audio 2992 Business One Dr, Kalamazoo 49048 | (269) 226-0122 |
| Michigan-Kal-Electronic Inc 3606 Lake St, Kalamazoo 49048 | (269) 343-1438 |
| M S Productions 5961 Manorwood Dr, Kalamazoo 49009 | (269) 353-6760 |