mClassic vs Cheap HDMI Converter Upscalers Compared on Lag and 240p Handling

You have just plugged a Super Famicom or a PlayStation 2 into a modern flat screen using a twenty-dollar HDMI adapter and are wondering why your favourite game looks like a smeared, shimmering mess. The mistake is almost universal. The mClassic vs cheap HDMI upscaler retro gaming comparison is the single most misunderstood topic in the entire retro gaming hobby. The difference between a great experience and a miserable one has nothing to do with the brand name on the box. It has everything to do with the video chipset inside and what that chip was designed to do. A cheap adapter from a stall in Sham Shui Po is not a cheaper version of an mClassic. It is a completely different category of device, built for a different job. Using one for retro games will actively destroy the image and add noticeable input lag.

To understand what goes wrong, you need to know what 240p actually is. In the 1980s and 1990s, consoles like the NES, SNES, and Mega Drive output a 240p signal. This is a progressive scan signal with a blank line between each field. It is not the same as 480i, which is true interlaced video used by DVDs and broadcast television. The problem is that most cheap HDMI adapter chips, like the MacroSilicon MS9282 or MS9288 found in no-name scalers, were designed for DVD players. They see a 15kHz SD signal and assume it is 480i. The chip then applies a deinterlacing process that is completely wrong for 240p. This is the failure mode known as 240p-as-480i misdetection. This destructive deinterlacing discards half the vertical resolution, combines the even and odd fields into combing artifacts on moving objects, and thoroughly ruins the scanline effect that makes retro games look crisp.

This is the core problem with a budget HDMI adapter 240p misdetection issue. It is not that the cheap scaler is low quality. It is that it applies the wrong algorithm to the signal. The chip does exactly what it was designed to do, but for the wrong input. Feed a 240p signal into a scaler expecting 480i, and the scaler weaves the two fields together. The result is a loss of resolution equivalent to watching a game through a pair of venetian blinds. The game becomes soft. Text becomes hard to read. Motion looks like it is being smeared with a wet cloth. This is the exact reason your NES looks terrible on a modern TV with a cheap adapter, while it looks fine on a CRT or a proper scaler.

How The Chipset Treats Your Game

When you buy a no-name scaler from a place like the Golden Computer Centre in Sham Shui Po, you are buying a device that contains a chip designed for video, not games. These devices claim to upscale to 1080p or even 4K. The claimed vs real performance is stark. The real signal treatment is a frame-buffer scaler that captures the entire frame, applies a simple bob or weave deinterlacing, and stretches the result to fill the screen. There is no anti-aliasing, no context-adaptive processing, and no attempt to preserve the original pixel structure. The scaler input max resolution is 1920×1080, so it cannot even handle a 4K signal natively. The 4K output is just frame-buffer scaling with no AA.

Latency You Can Feel

The deinterlacing method is bob or weave, and it is non-adaptive. Every frame gets the same treatment. This introduces combing artifacts in motion and a general softness to the image. The input lag is a significant problem. Independent testing by channels like My Life in Gaming measured no-name scaler latency at 1.5 to 3 frames at 480p. At 60 frames per second, that is between 25 and 50 milliseconds of lag. Enough to make a platformer like Super Mario World feel slippery and unresponsive. You will find yourself pressing jump a fraction of a second too late, and you will blame the game rather than the scaler. The scaler is the problem. No amount of tweaking your TV's game mode will fix it.

The Sham Shui Po upscaler vs mClassic comparison is not a fair fight because they are not fighting the same battle. The mClassic is an HDMI-native device from Marseille Inc. that processes an already-digital signal. It does not need to convert composite or S-Video. It sits in the HDMI chain between your console and your TV. The mClassic uses a proprietary context-adaptive anti-aliasing algorithm that analyses the image and smooths edges without blurring the entire picture. It also performs a mild upscale to 1440p, but the real value is in the anti-aliasing, which makes jaggies disappear while keeping the image sharp. The mClassic adds approximately 1-2ms of latency. Imperceptible. This is the mClassic retro mode vs AV2HDMI difference: the mClassic does not touch a 240p signal the way an adapter does because it is not trying to decode it.

The mClassic has a retro mode that forces a 4:3 aspect ratio on 16:9 inputs, useful for older games designed for CRT televisions. It also has a green LED that indicates passthrough mode. The device is firmware-updatable but rarely needs it. It is compatible with a wide range of consoles, including the Switch, Wii U, PS3, Xbox 360, GameCube, N64, Dreamcast, PS2, and PSP. The mClassic is powered by the HDMI port itself, so there is no external power supply to lose. It is a simple plug-and-play device that works as soon as you connect it. The input lag is so low it is undetectable, and the image quality improvement is immediate. If you have a console that outputs 480p or higher over HDMI, the mClassic is an excellent choice.

When you look at generic scaler input lag tested data, you need to understand what the numbers mean. A frame at 60Hz is 16.67ms. A scaler that adds 1.5 to 3 frames of lag is adding between 25ms and 50ms of delay. That is the difference between a game feeling responsive and feeling like you are playing through treacle. The mClassic adds less than 1ms of processing latency. Essentially nothing. The generic scaler's latency is caused by the frame buffer. The scaler must capture the entire frame, process it, and output it. This takes time. The more processing the scaler does, the more lag it introduces. A cheap scaler doing a poor job of deinterlacing and scaling is also doing it slowly.

Measure your own setup. If you are using a cheap adapter, test the lag using a Time Sleuth or a similar device. But you do not need a test device to know you have a problem. Play a game that requires precise timing, like Super Meat Boy or Celeste. Are you dying more than you should? The scaler is likely the culprit. Try the mClassic and see if your performance improves. The mClassic's processing is so fast you will not notice any difference in responsiveness, but you will notice a difference in image quality. The image will be cleaner. Jaggies gone. Text sharper.

The mClassic retro mode vs AV2HDMI debate comes down to signal type. An AV2HDMI adapter is a device that takes a composite or S-Video input and converts it to HDMI. It is a necessary evil if you have an old console that only outputs composite, such as the original NES or a Sega Master System. The problem is that most AV2HDMI adapters are just as bad as the cheap HDMI adapters. They use the same type of chipset that misdetects 240p as 480i, and they introduce the same amount of lag. A generic AV2HDMI adapter is not a solution. It is another problem.

If you have a console that outputs composite or S-Video, the best approach is to buy a separate line doubler or a scaler that can handle 240p correctly. The RetroTINK 2X-Pro is a line-doubling device that accepts composite, S-Video, and component. It has zero frame buffer and adds less than 1 frame of latency. It costs more than a cheap adapter, but it preserves the original pixels and eliminates combing artifacts. The mClassic is not a replacement for a line doubler because it does not accept analogue input. You need to pair an mClassic with a line doubler to get a clean 240p signal over HDMI. The process: console to line doubler to mClassic to TV. This is a valid setup, but it requires two devices.

Feature	mClassic	RetroTINK 5X-Pro	OSSC	Generic Scaler
Input Type	HDMI	Composite, S-Video, Component, SCART	Component, SCART, VGA	HDMI, AV
240p Handling	Requires external line doubler	Correct line doubling	Correct line doubling	Incorrect 480i treatment
Deinterlacing	None (passthrough)	Motion-adaptive	Bob (passthrough)	Bob or weave (non-adaptive)
Anti-aliasing	Context-adaptive AA	Optional smoothing	None	None
Latency	<1ms	<1 frame	<1 scanline	1.5-3 frames
Price Band (2026)	Mid-range, check Marseille Inc.	Premium, check RetroTINK	Mid-range, check OSSC	Budget, varies by stall

The fundamental difference: the mClassic is not a scaler. It is a post-processor. It takes an already-scaled, already-deinterlaced HDMI signal and applies context-adaptive anti-aliasing to it. It does not need to interpret a 240p signal because it never receives one. Feed the mClassic a 480i signal from a PS2 via a component-to-HDMI adapter, and it will pass it through and apply its AA to the 480i image. The result is a softer, cleaner image. But the underlying deinterlacing is still done by the component adapter, which may be using a simple bob or weave deinterlacer. The mClassic cannot fix a bad deinterlacing job. It can only smooth the jaggies after the fact.

The generic adapter is a different beast. It is a complete video processor that includes an ADC (analog-to-digital converter) for composite and S-Video inputs, a deinterlacer, a scaler, and an HDMI encoder. All these stages are cheap and poorly implemented. The deinterlacer is the biggest problem because it is not designed for game content. It uses a technique called "motion-adaptive" deinterlacing, but it does not work well with 240p. It sees the alternating blank lines as motion and applies a weave that creates combing artifacts. This is the root of the smeared look. The chip is doing the wrong job. No amount of tweaking will fix it.

Marseille Inc. claims the mClassic can output 1440p. The reality is more nuanced. The device outputs a 1440p frame with a 1080p active image area that has been upscaled. It is not a native 1440p render. It is a 1080p image upscaled to fit into a 1440p frame. The upscaling is done by the mClassic's algorithm, which is designed to be high quality, but it is still an upscale. The mClassic also claims zero lag. Independent testing with a Time Sleuth shows approximately 1-2ms of processing latency. This is caused by the context-adaptive algorithm's analysis window, which needs to look at a few frames of motion before it decides how to apply the anti-aliasing. The gap is small, but it is real. If you are a competitive gamer sensitive to input lag, note this.

The mClassic's input max frame rate at 1080p is 60Hz, and it supports HDMI 1.4. Input a 4K signal, and it passes through without any processing. This is a passthrough mode for modern consoles that do not need the AA. The device has a toggle switch on the side that activates retro mode, forcing a 4:3 aspect ratio. It is a simple device with no menu system and no firmware updates. It is what it is: a plug-and-play dongle that makes games look better. The mClassic is available in Hong Kong at the Golden Computer Centre, 2000Fun, and HKTVmall. It sits in a different product category entirely from a cheap adapter.

Where To Look Inside

If you are in Hong Kong and want to buy a scaler, head to the Golden Computer Centre in Sham Shui Po. This is the place for retro gaming hardware, but you need to know what you are looking for. The ground floor is a mix of phone repair stalls and laptop vendors. The upper floors have a few dedicated retro game shops. These are small stores with shelves of loose cartridges and consoles wired to CRTs for testing. You can find original SNES, Mega Drive, and PlayStation consoles, as well as the games. Prices reflect the global retro market boom but remain reasonable.

What To Avoid And What To Ask For

These shops also sell cheap HDMI adapters. You will see them stacked on the counter, mislabeled as "HDMI Upscaler 1080p" or "4K Converter." Do not buy these. They are the exact same MacroSilicon chips ruining your games. Instead, ask if they have any used RetroTINK or OSSC units. They may keep them behind the counter. If they do not have one, you can order online, but you will wait. A good alternative is to ask about the GBS-Control, a community-developed firmware that turns a cheap GBS-8200 VGA scaler into a competent lag-free upscaler. It requires soldering skills. If you find a modded one, it is a great budget option. The key: avoid the cheap adapters and spend a little more on a proper scaler.

Before you even think about the scaler, get the best possible signal out of your console. The console video output hierarchy: RF is worst, composite is better, S-Video is better, RGB/component is best. Using a composite cable introduces dot crawl and a soft image from the start. The signal is a single wire that carries both luminance and chrominance, and they interfere with each other. S-Video separates these two signals onto separate wires, which eliminates the dot crawl and gives you a sharper image. Component and RGB SCART are the best options because they carry the video signal in its most complete form, with separate wires for red, green, blue, and sync.

The type of input you use matters more than the scaler. A good scaler cannot fix a bad signal. Feed a RetroTINK 5X-Pro a composite signal, and it will look better than a generic scaler, but it will not look as good as it would with an S-Video or component signal. The mClassic is different because it is HDMI-only, so you need a console that outputs HDMI natively or an adapter in between. For a PlayStation 2, use a component-to-HDMI adapter plugged into the mClassic. The quality of that adapter matters. Buy a high-quality one that does not add lag. The best option for a PS2 is a RetroTINK 5X-Pro with component cables, giving you a clean 480p or 960p image with motion-adaptive deinterlacing.

The PlayStation 2 is a great example of why deinterlacing quality matters. Most PS2 games run at 480i, which is interlaced. A generic adapter will deinterlace this with a bob or weave, creating a flickering image with combing artifacts. The RetroTINK 5X-Pro uses a motion-adaptive deinterlacer that reconstructs the full resolution from the interlaced signal. The result is a stable, flicker-free image. The mClassic is not a deinterlacer, so it cannot help with this. Feed it a 480i signal, and it passes it through and applies AA. The deinterlacing is still done by the adapter.

If you are a PS2 player, do not rely on the mClassic alone. You need a proper scaler like the RetroTINK 5X-Pro or a GBS-Control. These devices have the processing power to handle interlaced content correctly. The GBS-Control's motion-adaptive deinterlacing works well, but it exhibits chroma artifacts on fast-moving red objects. This is a known quirk of the system. The OSSC is a line-doubler. It does not deinterlace; it just doubles the lines. This works well for 240p content but causes flicker on 480i. The OSSC Pro adds a frame buffer and adaptive line multiplication, but it is expensive. For a PS2, the RetroTINK 5X-Pro is the best choice. It balances quality and cost.

Another issue with cheap scalers is frame lock speed. When a PS1 game switches from a 240p menu to a 480i gameplay sequence, the scaler needs to re-sync. A cheap scaler takes 2-3 seconds to lock onto the new signal. That means a blank screen every time the resolution changes. This is a common problem with games that have dynamic resolution changes or that switch between progressive and interlaced modes. The RetroTINK 5X-Pro and OSSC handle these switches almost instantly. You do not notice them. The mClassic is also fast because it does no resolution detection. It just passes through the signal.

Sync drop on white flash is another failure mode. During a SNES game, a flash of white can cause the scaler to lose sync. The screen goes black for a few seconds. This is caused by the scaler's tolerance for sync signal variations. A scaler with tight tolerance drops sync during these events. This is not a problem with the mClassic because it does not process the sync signal. It is a problem with cheap adapters and some scalers. The OSSC has a reputation for being tolerant of sync variations, which is why it is a favourite among the retro community. If you are experiencing sync drops, try adjusting the sync threshold on your scaler or using a different cable.

For Modern Consoles

What should you buy? It depends on your budget and your needs. If you have a modern console like a Switch or a PS5 that outputs 1080p or 4K over HDMI, the mClassic is an excellent choice. It cleans up the image, reduces jaggies, and adds minimal lag. It is a simple plug-and-play device you can move between consoles. Check Marseille Inc. for the current price in Hong Kong. It costs more than a cheap adapter but much less than a RetroTINK 5X-Pro.

For Original Hardware

If you are a retro gamer with a collection of original consoles, you need a proper scaler. The RetroTINK 5X-Pro is the best all-around choice because it accepts composite, S-Video, component, and RGB SCART. It has a menu system, profile saving, and CRT simulation filters. Check RetroTINK for the current price. It is an investment justified if you have multiple consoles. The OSSC is a good budget option, but it lacks composite and S-Video inputs. The GBS-Control is the cheapest option, but it requires technical skills to set up. Avoid the cheap HDMI adapters. They are a waste of money and will ruin your gaming experience.

1. What is the biggest mistake people make with HDMI adapters? The biggest mistake is buying a cheap adapter from a market stall that treats 240p as 480i, which ruins the image. Invest in a proper scaler like a RetroTINK or an mClassic for a clean picture.
2. Does the mClassic work with 240p consoles like the SNES? The mClassic does not accept analogue input, so you need a separate line doubler like a RetroTINK 2X-Pro to convert the signal to HDMI first. Then the mClassic will apply its anti-aliasing.
3. How much input lag do cheap HDMI adapters add? Cheap adapters typically add 1.5 to 3 frames of lag, which is between 25ms and 50ms. This is enough to make games feel unresponsive.
4. What is 240p-as-480i misdetection? It is when a scaler mistakes a 240p game signal for 480i video and applies deinterlacing, discarding half the resolution and adding combing artifacts.
5. Is the mClassic a good choice for PS2 games? The mClassic can help with anti-aliasing, but it does not deinterlace. For PS2, you are better off with a RetroTINK 5X-Pro for its motion-adaptive deinterlacing.
6. Where can I buy a reliable scaler in Hong Kong? Visit the Golden Computer Centre in Sham Shui Po or Wan Chai Computer Centre. Ask for a RetroTINK or OSSC, not a generic adapter.
7. Can a cheap scaler damage my console? No, it will not damage your console, but it will ruin the image quality and add lag. It is a waste of money.

The Golden Computer Centre in Sham Shui Po sells a fifty-dollar adapter that will instantly ruin your Super Famicom image, but the same building has a RetroTINK 5X-Pro behind the counter if you ask for it by name.