THIS PRODUCT DOES NOT SHIP TO THE UNITED STATES. Any orders to the US containing this product will be cancelled. It can be purchased in the US here.
The SEGARGB Bypass kit is a DC coupled RGB video circuit that Voultar put together primarily for any/all revisions of the Sega Genesis, but he has also used it in the Sega Master System to remedy video problems. The circuit includes a buffered C-Sync output that's designed to work with RGB cables that have either A) 470Ω resistor on the C-Sync line or B) a 75Ω resistor on the C-sync line. Also included is a Low-Pass Filter that can be toggled.
Check out this video of what was once a very noisy Sega CDX that's been fitted with the SegaRGB Bypass kit:
This is a "before" picture of a Model 1 Sega Master System that was outputting a "dark" picture with jailbars (click to embiggen):
Here's the same SMS with the SegaRGB Bypass (click to embiggen):
This SegaRGB kit is strictly as/is. This kit will not fix all video problems for every and/or all main-board revisions of the Sega Genesis or Sega Master System. No installation documentation is provided. The Sega Master System isn't officially supported as there are a few different revisions that I haven't gotten to yet, therefore I can't guarantee absolute drop-in compatibility.
Voultar's SegaRGB kit is provided as-is without any guarantees or warranty. In association with the product, we make no warranties of any kind, either expressed or implied, including but not limited to warranties of merchantability, operational failure and/or damage as a result of end-user installation. Use of the product by a user is at the user’s risk.