Nintendo sold over 49 million Super Nintendo consoles, but not all of them were the same hardware-wise. Later versions received improved video output with improved image quality. Over three decades later, console modder Zach Henson, known as Voultar, found a way to provide the same enhancements to any Super Nintendo. He created a $60 upgrade kit for older consoles called the Edge Enhancer.

While Nintendo has made many changes to the Super Nintendo hardware during the console’s production, two versions of the SNES (Super Nintendo Entertainment System) stand out to retro gamers: the original, now called the SHVC or dual-chip model, and the later upgraded version known as the 1CHIP.

The dual-chip SNES had a digital-to-analog video converter in its picture processing unit (PPU), and players found that it couldn’t quickly switch between different colors. As a result, the video image appeared soft and blurry, with a halo appearing around graphic objects. The problem was most noticeable in the 90s when gamers used CRT TVs, but on a modern screen the differences are much more noticeable.

In the next version of the Super Nintendo with 1CHIP, the company combined two video chips and the original’s processor into a single processor. This was a move intended to make the console cheaper to produce, but it also had an unexpected result: the image became sharper and colors were visibly improved.

For retro gamers who prefer to play on original hardware, Super Nintendo 1CHIP consoles are now very popular and can sell for over $200. But that could soon change thanks to a kit developed by Henson.

Voultar’s Edge Enhancer mod is no easy feat, even for experienced electronics enthusiasts. To start, you’ll need to completely disassemble the console and then use a soldering iron to remove the original transistors, capacitors, and resistors from the console’s motherboard. Hanson plans to sell the Edge Enhancer kit once documentation and tutorials are complete, and for now, it’s being offered as an installation service to enable SNES functionality.

Final pricing has yet to be announced, but considering that 1CHIP Super Nintendo consoles are becoming increasingly difficult to find in aftermarket products, the Edge Enhancer mod could be a better deal despite the cost of sending the motherboard in for an upgrade.