| D'Addario | www.daddario.com |
| D'Aquisto Strings | www.daquisto.com |
| Dancetech | www.dancetech.com |
| DBX Prof. | www.dbxpro.com |
| DDA | www.ddaconsoles.com |
| Ddrum | www.ddrum.com |
| Dean Markley | www.deanmarkley.com |
| Digidesign | www.digidesign.com |
| Digigram | www.digigram.com |
| Digital Arts | www.bbc.co.uk |
| Digital Audio Labs | www.digitalaudio.com |
| Digital Music Corp | www.voodoolab.com |
| Digitech | www.digitech.com |
| DiMarzio | www.dimarzio.com |
| Dobro | www.gibson.com |
| DOD Elec. | www.dod.com |
| Doepfer | www.doepfer.com |
| Dolby Laboratories Inc | www.dolby.com |
| DR Strings | www.drstrings.com |
| Dr Z Amps | www.drzamps.com |
| DSPFX Plug In's | www.dspfx.com |
| Dunlop | www.jimdunlop.com |
| Dynacord | www.dynacord.com |
| Dynaudio | www.dynaudiona.com |
