| Business | Phone |
| Ara Chujko Brothers Inc 1123 Chartiers Ave, Pittsburgh 15220 | (412) 771-4500 |
| Bates Pro Audio 332 Delaney Dr, Pittsburgh 15235 | (412) 823-0888 |
| Cascade Electronics 5238 Clarwin Ave, Pittsburgh 15229 | (412) 931-3733 |
| Eastern Continental Sales-Svc 311 Vanadium Rd, Pittsburgh 15243 | (412) 429-0665 |
| G & K Electronics 555 Dixie Dr, Pittsburgh 15235 | (412) 825-8850 |
| O'Neil Pro Sound 113 E Littlewood St, Pittsburgh 15223 | (412) 487-7160 |