| Business | Phone |
| Big Sky Sound 1205 Monad Rd, Billings 59101 | (406) 256-3246 |
| Sage Mountain Sound 222 N 32nd St # 504, Billings 59101 | (406) 252-2673 |
| Sound Connection Inc 1938 Dogwood Dr, Billings 59105 | (406) 259-4137 |
| Sound Ideas 4507 Murphy Ave, Billings 59101 | (406) 259-7168 |
| Custom Home Audio & Theater 3318 3rd Ave N, Billings 59101 | (406) 896-1846 |
| Lifetronics 405 Main St # B, Billings 59105 | (406) 259-7444 |