| Business | Phone |
| Audio Source Inc 710 Franklin Blvd #1, Cambridge N1R 7Z1 | (519) 621-3003 |
| Mass Electronics Ltd 366 Hespeler Rd, Cambridge N1R 6J6 | (519) 623-0320 |
| Stereo Connection 1490 Dunbar Rd #4, Cambridge N1R 6R3 | (519) 622-7703 |
| Cambridge Car Audio Instltns 1195 Franklin Blvd #14, Cambridge N1R 7R7 | (519) 740-8311 |