Gamecube GCDual DIY kit

Our GCDual kits now come pre-flashed with the latest firmware

GCDual is the ultimate AV upgrade for your classic Nintendo Gamecube console. Free yourself from expensive component cables and analogue only connections with this all in one solution. GCDual adds the following features to your classic console:-

HDMI output – Full HDMI output including audio, with optional line doubling of 240p/480i sources and optional scanlines. Note that GCDual uses a Mini HDMI port.

Full analogue output – Output ANY Gamecube resolution via the standard analogue port. Need 480p via SCART for your OSSC or XRGB Mini? No problem! It’s also possible to get RGB output for NTSC consoles.

No more rare and expensive component cables – Use a standard SNES SCART cable with a breakout adapter for component (YPbPr) video.

OSD control – Access GCDual’s settings from a convenient OSD which works via a standard Gamecube controller. To activate the OSD, hold the L, R, X and Y buttons down until the menu appears.

The Nintendo Gamecube GCDual upgrade powers up your classic console with a fully digital HDMI output port that supports both video and audio. All Gamecube screen modes are supported, 240p can be line-doubled to 480p for full HDMI compatibility, while interlace modes can be either line doubled or sent directly to the display. All line-doubling is done on the fly, there’s no frame buffer and therefore no input lag.

To learn more about this fantastic mod, check out our review of the original HDMI Gamecube mod here, and our updated review/overview of GCDual’s new features here.

Remember, in order for your Gamecube to be compatible with this mod, it MUST have the “Digital AV Out” port at the back of the console. Later model Gamecube consoles that do not have this port are unfortunately not compatible.

This mod provides audio and video through the HDMI cable, but a very small number of HDTVs may be incompatible with audio/video mode. In this case, audio can be disabled through HDMI and routed through the consoles analogue output to a suitable receiver as normal.

Fitting instructions

Please note this is not an easy modification to fit. Do NOT order this kit until you have read ALL of the fitting instructions and feel confident with carrying out the installation. Some community based support may be available in our forums but we CANNOT offer technical support with DIY fittings nor can we give refunds on components that have been damaged or destroyed due to incorrect use or failed installation attempts.

For fitting Instructions – click here.

If you require a fitting service for this part, click here.

Nintendo and Gamecube are trademarks of Nintendo Co., Ltd. GCDual is NOT an official Nintendo product.