Retro-Bit Prism HDMI Adapter for GameCube - AV to HDMI Converter/Upscaler for 1080P Support

If you have a Gamecube with the digital port then this is the best way to play your favorite GC games. Although it's $80 it is money well spent once you see how good your games look. It's plug-n-play with any HDMI cable and requires no modding. Highly recommend!

Works great, no more blurry gameplay. What they don’t tell you is that for it to work properly you have to hold in the B button in your controller to put the game cube into progressive scan mode when you turn it on. then it’s 480p instead of 480i

This was money well spent! Seriously, I was using a scrappy $13 converter that made Twilight Princess look like Vaseline was smeared all over the TV and the game was so dark that I had trouble seeing some areas. But this converter is like putting on proper glasses for the first time after having been used to bad eyesight! It even took me 30 minutes to adjust and get used to the sharpness and great resolution. The remote allows for image tweaks. I set the tv to a 4:3 aspect ratio and it looks perfect. Still doesn't beat a good old CRT, but this is still fantastic.

You need to have the right model of Gamecube to use this (DOL-001) you can tell if your Gamecube can use this because there will be a second "digital out" port next to the SNES-style video port on the back. If you have that second port, you can use this. I have two Gamecubes, one of them it worked perfectly in, the other one was fiddly and I had to move the device around a bit to get it to be recognized. This is of course a problem with my Gamecube and not the device, but the reason I bring it up is this device is big and hangs out of the back of the gamecube so it can be a little finicky, if you get this and don't get a picture right away, fiddle around with it because it might still work. Be warned that despite the picture being digital, it is 480 lines of resolution and most games are interlaced, the picture just did not look as good as I thought it would, even knowing this limitation. However again this is a problem with the Gamecube and not this adapter, the picture is still much better than S-video and you can use it on a modern TV. If you really want a better picture for your gamecube games, there are software emulation options. It comes with a remote control that lets you change around options. It has a few useful options like the ability to output a framed widescreen image. But I didn't need to change anything to get best use of this device.

A little pricey but worked instantly

This is a huge step up from using composite cables. It makes games look HD in comparison. There are other "cheaper" HDMI adapters but they have nowhere near the quality as this product. I believe this is currently the cheapest product if you want 480p on your Gamecube and it doesn't disappoint for the price.

Got a GameCube in Japan and had no clue what the best way to get that image into my modern TV. I went on Amazon, picked a $20 adapter that needed it's own power supply, that was advertised to work with SNES, N64, and GC via composite out. When I plugged it in, the image quality was poor, colors washed out, gross taring. Then I did my research and found the Retro-Bit Prism. The Retro-Bit Prism doesn't need an external source of power. It connects through the digital port that came on all first series GC units instead of the composite. It comes with a little remote control that allows you to adjust all the settings. When I plugged it in, I added scan lines, and boy it was night and day improvement over the other adapter. Colors are vibrant, the image looks great considering there is no upscaling. All I have to do is learn Japanese and I'll be all set. Now, I accept that it's not going to look like modern gaming systems and if I want to improve the image more, I'll need to get an upscaler. Right now, I'm happy with how it is. Good news; the upscalers I'm looking into work well with the Retro-Bit Prism so it'll be an easy transition. Highly recommend!

This HDMI adapter is top notch. Picture and sound quality are 10/10. Ive compared this against the other well known gamecube HDMI adapter and have found zero difference personally. this one even has the added benefit of having a USB-C port to plug into your computer and apply firmware updates to it. Something the other one cannot do without physically modding it. The only thing keeping this from being 5 stars, and its ONLY downside is that it REALLY should come with a support bracket in-box. You either have to buy one for it online, or 3d print one yourself. If you dont, this adapter (when an hdmi cable is plugged in) runs a risk of adding a lot of downward pressure on the digital out port and potentially damaging it.