Alesis HR-16 / HR-16B Custom EPROM Upgrade – E-mu SP-12 Vintage Drum Sounds + OS

Alesis HR-16 v1.09 Firmware and Sound Chips

Roland R-8 MK2 OS v1.03 EPROM Firmware Upgrade KIT / New ROM Final Update Chip

Alesis HR-16 / HR-16B EPROM Upgrade - Full Roland TR Series: TR-505, 606, 626, 7

Alesis SR-16 OS v1.04 EPROM Firmware Upgrade KIT /Brand New ROM Update Chip SR16

Alesis HR-16 / HR-16B EPROM Upgrade - Casio RZ-1, Roland CR-78 & Cheetah MD16 So

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

Alesis HR-16 / HR-16B Custom EPROM Upgrade – Roland CR-78 & Boss DR-55 Vintage