Sega Master System RGB Encoder Switcher Mod Kit


Mod Kit Includes:

  • 1 x RGB Encoder Switcher Mod-board


  • Allows composite video colour encoding in both PAL and NTSC
  • No more black and white video when in 60Hz

*Requires a region mod and DFO.

SKU: KIT-SMS-ES Categories: , ,


The world’s first encoder switcher mod kit for the Sega Master System. Finally it is possible to have a real multi-region Master System with correct colour encoding in both PAL/50Hz and NTSC/60Hz modes. Designed for those that enjoy gaming via composite video. Requires a PAL and NTSC compatible TV or upscaler as this mod creates real PAL and real NTSC to match the region of the console.

Primarily aimed at PAL Sega Master System 2 consoles with the SEGA 315-5237 IO Controller IC. Other revisions will need looking at and testing before confirmation of compatibility.

Compatible with the following Sega Master System consoles.

  • Model 2 / PAL / 171-6395A
  • Model 2 / PAL / 171-5922A

More will be tested soon.

I am not sure how the same mod can work in an NTSC SMS console that only has a 10.7MHz crystal. There is no available PAL subcarrier frequency to make it a dual format system. More research needed.

Product Instructions

Coming soon.

Additional information

Weight 0.003 g
Product Type

Mod Kit

Console Make


Console Model

Master System

Mod Attribute

Quick Solder Board, RGB Encoder Switcher

Designed by

Consoles Unleashed

Coded by

Not Applicable


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