| Scanned instructions | /pub/sinclair/hardware-info/m/MUZIX81-AudioProcessor_UsersManual.pdf | 1,420,157 | - | | | Scanned English manual |
| Instructions | /pub/sinclair/hardware-info/m/MUZIX81-Digisynt_ReferenceManual.pdf | 17,774 | - | | | English manual |
| Instructions | /pub/sinclair/hardware-info/m/MUZIX81-MIDIAnalogueConverter.pdf | 14,618 | - | | | English manual |
| Instructions | /pub/sinclair/hardware-info/m/MUZIX81-Multisim_Manual.pdf | 12,497 | - | | | English manual |
| Instructions | /pub/sinclair/hardware-info/m/MUZIX81-Notewriter.pdf | 19,408 | - | | | English manual |
| Hardware picture | /pub/sinclair/hardware-pics/m/MUZIX81AudioProcessor_Back.jpg | 55,021 | - | | | |
| Hardware picture | /pub/sinclair/hardware-pics/m/MUZIX81AudioProcessor_Front.jpg | 48,557 | - | | | |
| Hardware picture | /pub/sinclair/hardware-pics/m/MUZIX81AudioProcessor_Side.jpg | 50,635 | - | | | |
| Hardware picture | /pub/sinclair/hardware-pics/m/MUZIX81AudioProcessor_Top.jpg | 54,136 | - | | | |