| 1000279 | Multi Sound Generator | - | - |
| 1000286 | Ness Beep Amplifier | - | - |
| 1000299 | Orat | - | - |
| 1000694 | PSGIO Interface | - | - |
| 1000308 | Pellet Sound Amplifier | - | - |
| 1000833 | Personal Speech System | - | - |
| 1000309 | Petron Trichord | - | - |
| 1000311 | Pinnacle Sound Amplifier | - | - |
| 1001177 | Programmable Sound Generator (PSG) | ZX81 16K | - |
| 1000841 | Rainbow Sound Booster | - | - |
| 1000340 | Ricoll Action Replay | - | - |
| 1000342 | Ricoll RIFG Sound Generator | - | - |
| 1000344 | Ricoll RISG Sound Generator | - | - |
| 1000347 | RomSound | - | - |
| 1000396 | SS1 Speech Synthesiser | - | - |
| 1000363 | Saga Soundboost | - | - |
| 1000709 | Sound Booster | - | - |
| 1000711 | Sound Expander | - | - |
| 1000710 | Sound Expander | - | - |
| 1000712 | Sound Generator | - | - |