Your NES cartridges will work on a modern HDTV, but the original hardware was never designed for one. The three practical routes are: a clone console with a built-in HDMI port, a composite-to-HDMI adapter paired with the original hardware, or a dedicated upscaler for better signal quality. Each trades cost and complexity against picture quality and input lag, so the right answer depends on what you own and how much you care about fidelity.
The core problem is signal mismatch. The NES outputs a 240p analog signal, either RF or composite, and virtually no TV sold in 2026 has an RF input, while composite inputs are increasingly rare. Your TV also buffers and processes every frame before it hits the panel, which can add anywhere from 30 to over 100 milliseconds of latency on top of whatever the conversion chain introduces. Knowing that, here is how each method actually works.
What does a clone console do differently from original NES hardware?
A clone console replaces the original NES internals with a modern chip that accepts your cartridges and outputs a digital signal directly over HDMI. Because the signal never has to be converted from analog, there is no composite noise and no external adapter box to introduce lag.
Hyperkin’s RetroN line is the most widely available example of this approach. The RetroN 1 HD accepts original NES cartridges, both NTSC and PAL, and outputs in 720p over HDMI, with a physical switch on the unit to flip between the two regional standards. The RetroN 2 HD goes further, adding SNES and Super Famicom support alongside NES, and outputs 720p in either 4:3 or 16:9 aspect ratio. The RetroN 5 handles nine cartridge formats including NES, Famicom, SNES, Genesis, and all three Game Boy variants, adds save states and screenshot capture, and still outputs via HDMI. All three include an AV output as well, so connecting to a CRT remains an option.
The trade-off worth knowing: clone consoles use software emulation rather than original hardware, so color accuracy can differ slightly from what a real NES produced. One published review of the RetroN 1 HD noted that colors appeared somewhat more saturated than on original hardware. For most players revisiting Super Mario Bros. 3 or Mega Man 2, that difference is not meaningful. For someone who cares about pixel-perfect accuracy, it is worth factoring in.
Can you connect an original NES to an HDTV with an adapter?
Yes, though it takes more steps than a clone console. The original NES has two analog outputs: an RF port and a composite AV port (the yellow, red, and white RCA jacks on the front-loader model). RF delivers the worst picture quality and requires a channel-3/4 tuner input that most modern TVs no longer include. Composite is the better starting point.
If your TV still has composite inputs, you can plug the NES directly in. Most TVs sold in 2026 do not, so you will need a composite-to-HDMI adapter. These are small powered boxes that take the yellow video RCA and the red/white audio RCAs as input and output a standard HDMI signal. Budget options run roughly $15 to $25 and are plug-and-play. The image will be soft, since composite is an inherently noisy signal, but it is playable.
The bigger concern is lag. Modern TVs buffer frames for processing, and on a raw analog input that processing can stack up. Enabling Game Mode on your TV is the single most effective setting change you can make: it bypasses most of the TV’s image-enhancement pipeline and typically cuts latency by 10 to 30 milliseconds. Set the aspect ratio to 4:3 and reduce sharpness to zero, since the NES outputs 256x240 pixels and any artificial sharpening introduces artifacts that were never in the original signal.
When does it make sense to use a dedicated upscaler?
A dedicated upscaler sits between your console and your TV and handles the analog-to-digital conversion with hardware built specifically for retro video signals. Devices like the RetroTINK 2X Mini take composite or S-Video input and output clean 480p over HDMI, designed to handle the 240p signal the NES produces without the frame-buffering that causes TV-side lag. The OSSC (Open Source Scan Converter) is a step up from there, using line multiplication rather than full upscaling to preserve the original signal timing almost exactly.
For composite-only sources like an unmodified NES, the RetroTINK 2X Mini is probably the practical ceiling before the cost stops making sense. It runs $30 to $40 and produces noticeably cleaner output than a generic AV-to-HDMI box. The OSSC starts around $90 and is better suited to consoles that can output RGB or component video. An NES would need an RGB modification to take full advantage of it, which adds both cost and technical complexity.
An upscaler earns its cost when lag on a 65-inch 4K panel is measurable: roughly 50ms or more after Game Mode is already enabled. At that point, a dedicated upscaler removes the TV’s conversion step entirely and brings latency down to single-digit milliseconds. For casual play on a mid-size screen, a $20 adapter with Game Mode enabled is enough.
What TV settings reduce input lag and improve the picture?
Start with Game Mode. It tells the TV to skip frame-buffering and image-enhancement processing, which is exactly what introduces lag. Most major TV brands include it; look for it in the picture or display settings for the specific HDMI input you are using. From there, fix the aspect ratio: set it to 4:3 or “Normal,” not “Full” or “Wide.” The NES was designed for 4:3 displays, and stretching it to 16:9 widens every sprite and distorts the geometry of every game.
Next, turn sharpness down, often all the way to zero. The NES outputs a soft analog signal, and artificial sharpening adds ringing artifacts around pixel edges that were not present on the original CRT. Finally, disable overscan if your TV offers the option. Some TVs crop the edges of the image, which cuts off parts of the NES picture, and turning overscan off shows the full frame.
One accessory limitation worth noting: the NES Zapper light gun will not work on any LCD or OLED panel. It relies on the CRT’s electron-beam timing to detect where the gun is aimed, and flat panels do not produce that signal.
The Right Method Comes Down to Your Cartridges and Your Tolerance for Setup
If you own a collection of NES cartridges and want them running on a modern TV with minimal setup, a clone console with a built-in HDMI port is the most direct path. You plug in an HDMI cable, insert a cartridge, and play, with no adapter chain, no signal conversion, and no extra boxes on the shelf.
If you already own original NES hardware and want to keep using it, a composite-to-HDMI adapter plus Game Mode gets you there for under $25. The image will be softer than a clone console’s output, but it is a workable solution for most games. A RetroTINK 2X Mini is worth the step up if lag or image quality bothers you on a larger panel.
For anyone who also wants a new controller that fits the original NES port and ships with a longer cable, the Hyperkin Trooper 2 Gamepad is a $19.99 option that pairs cleanly with any of the setups described above.
Frequently Asked Questions
Does the Hyperkin RetroN 1 HD work with PAL NES cartridges?
Yes. The RetroN 1 HD supports both NTSC and PAL NES cartridges, and switching between them requires only flipping a physical switch on the console. No menu navigation or settings change is needed. It outputs both regional formats in 720p over HDMI.
Will a cheap composite-to-HDMI adapter cause noticeable input lag on an NES?
It can, but the TV’s own processing is usually the larger contributor. Enabling Game Mode on your TV bypasses most frame-buffering and image-enhancement, cutting latency by roughly 10 to 30 milliseconds. A quality adapter plus Game Mode is sufficient for most NES games; only precision-heavy titles expose the remaining lag.
Can I use my original NES controllers with a clone console like the RetroN?
Most Hyperkin RetroN models include original NES controller ports, so your existing controllers plug in directly. The RetroN 5 also supports Bluetooth controllers. If you want a new wired option with a longer cable and a familiar layout, the Hyperkin Trooper 2 Gamepad is designed for exactly this kind of setup at $19.99.
Why does my NES look stretched on my HDTV?
Modern TVs default to a 16:9 widescreen aspect ratio, which horizontally stretches the NES’s native 4:3 image. Go into your TV’s picture or display settings and change the aspect ratio to “4:3,” “Normal,” or “Original.” That restores the correct geometry and stops characters and environments from looking wider than intended.
Is it worth buying an FPGA-based NES clone for better accuracy?
FPGA consoles like the Analogue NT Mini Noir replicate NES hardware at the circuit level rather than running software emulation, which produces more accurate color and timing. They typically cost $200 or more. For most players, the accuracy difference over a RetroN-class clone is minor in practice. FPGA makes sense if color fidelity and cycle-accurate behavior matter to you; otherwise the price gap is hard to justify.