| Business | Phone |
| Audio-Visual Svc 3401 Chestnut Ave, Baltimore 21211 | (410) 467-3620 |
| Canton Customs 940 S Conkling St, Baltimore 21224 | (410) 342-1717 |
| Design & Integration 3100 Falls Cliff Rd, Baltimore 21211 | (410) 467-2815 |
| Kipp Visual & Security Systems 3600 Clipper Mill Rd # 105, Baltimore 21211 | (410) 235-9900 |
| National Audio Supply Inc 34 Market Pl, Baltimore 21202 | (410) 752-7910 |
| Technical Audio 423 W Monument St, Baltimore 21201 | (410) 728-7883 |
| Total Audio Visual Svc 1011 W Barre St, Baltimore 21230 | (410) 625-4700 |
| Touch Audio 1490 W Patapsco Ave, Baltimore 21230 | (410) 355-0012 |
| Whitlock Group 13 Kintore Ct, Baltimore 21234 | (410) 661-2633 |