8bits4ever MSX-Blaster OPL4
This page was last modified 13:50, 14 June 2021 by Mars2000you. Based on work by Gdx and Grauw.



The MSX-Blaster OPL4 is a MoonSound-compatible cartridge manufactured by 8bits4ever.

It is actually based on the Wozblaster, originally made by Gustavo Iriarte and later reworked by Eugeny Brychov. Unlike the Wozblaster, the MSXBlaster runs with a CPLD chip, thus reducing heat and power consumption

The first version had 1MB Sample-RAM, but it has been upgraded to 2MB since version 2.

Official price: €100.00


8bits4ever MSX-Blaster OPL4
8bits4ever MSX-Blaster OPL4
8bits4ever MSX-Blaster OPL4 left side
8bits4ever MSX-Blaster OPL4 PCB Rev.1
8bits4ever MSX-Blaster OPL4 PCB Rev.2
MSX-Blaster OPL4 PCB Rev.2 (underside)


  • Yamaha YMF278B OPL4 sound chip
  • YAC513-M DAC
  • 1 MB or 2MB Sample-RAM
  • Yamaha YRW-801 ROM
  • External stereo audio output (TRS 3.5mm jack)
  • Internal mono audio output to MSX

Since revision 2.5, it includes a high signal-to-noise ratio circuit fix for better audio output.

See OPL4 page for more specifications. .