Roland R-8 OS v2.02 EPROM Firmware Upgrade KIT / / New ROM Final Update Chip R8

Roland R-8M OS v1.04 EPROM Firmware Upgrade KIT / New ROM Final Update Chip

ROLAND R8 DRUM MACHINE Human Rhythm Composer

Roland R8 Drum Machine No Power Supply

Roland R-8 Human Rhythm Composer Drum Machine Rhythm Programmer Tested

Alesis HR-16 / HR-16B EPROM Upgrade - Original OEM Sound ROM + OS 2.0 Firmware

Roland TR-909 OS 4.0 EPROM Firmware Upgrade KIT [Midi Timing Fix] / New ROM Chip

Alesis D4 OS version 1.04 EPROM Firmware Upgrade KIT / New ROM Update Chip