Sunrise MoonSound
This page was last modified 00:33, 16 August 2023 by Mars2000you. Based on work by Gdx and Rderooy and others.



The MoonSound is the original OPL4 cartridge distributed by Sunrise.

Different versions of the MoonSound were made. Also the output connector in this first series is on a different place; on top of the cartridge. In version 2 the output connector is on the right side of the cartridge.

MoonSound version 1 has 128kB Sample-RAM (1 socket) and version 2 a socket for a second Sample-RAM IC. This can either be a 128kB SRAM chip (Part number: SONY CXK581000AP, Memory Capacity: 1M-bit, Function: (128k × 8-bit) LL, Access: 70 ns, Pins: 32, Package: DIP) or a 512kB SRAM chip (Part number: HITACHI HM628512LP-7, Memory Capacity: 4M-bit, Access: 70 ns, Pins: 32, Package: DIP).

The MoonSound comes with a cable (mini jack to 2 × cinch; stereo) to connect it to an amplifier. Also a black & white manual and the Moonblaster software is included.

Brand Sunrise
Model MoonSound
Year 1994
Region NL
Launch price ƒ390 introduction, ƒ449 afterwards
128kB S-RAM upgrade ƒ45
512kB S-RAM upgrade ƒ83
Package content
Emulation Emulated


MoonSound cartridge
MoonSound v1.0 PCB
MoonSound v2.0 PCB


  • Yamaha YMF278B OPL4 sound chip
  • Yamaha YAC513 DAC
  • 128 kB to 1024 kB Sample-RAM
  • Yamaha YRW-801 ROM
  • External stereo audio output (TRS 3.5mm jack)

See OPL4 page for more specifications.