Sham Shui Po and Wan Chai Retro Gaming Hardware: Verified Shops and What to Expect

The Golden Computer Centre escalator doors open onto a smell of ozone and hot PCB. The first thing you see is not a machine but a stack of Sony PVM-20L5 monitors wobbling on a metal trolley beside the stairwell. That smell is the entire Sham Shui Po and Wan Chai retro-hardware circuit in one breath. It tells you more than any storefront sign ever will. The building at 146-152 Fuk Wa Street is a warren of stalls that mostly sell phone cases and laptop fans. The ground floor and the lower ground floor are where the retro hardware concentrates, and the concentration is the point.

How to Read a Stall in Thirty Seconds

Walk the lower ground floor slowly. A stall that looks like it sells discarded office printers will have a Super Famicom NTSC-J buried under a pile of AV cables. The stall two doors down that openly advertises "retro" will be asking double for a unit that has been tested with composite video only. The Hong Kong Retro Game Association publishes a list of member stalls that volunteer to verify their stock, but the list changes and the stalls move floors without notice. Your rule is simpler: the stall that hands you a screwdriver and lets you open the machine before you pay is the one you buy from. The stall that says "tested working" and points at a blurry CRT behind the counter is the one you skip.

The Three Things You Are Actually Hunting

You are hunting for three specific things inside the Golden Computer Centre, and none of them are the expensive units in the display cases. The first is a step-down transformer. Hong Kong mains voltage is 220V at 50Hz. A Japanese Super Famicom or a Japanese Sega Saturn runs on 100V. The stall that sells you the hardware without asking about your transformer is not your friend, because a 220V board will burn out the input cap in under a minute. The second is a genuine RGB SCART cable. The third is the power supply for the scaler you already own. If you do not know which scaler you own, that is the next section.

Ap Liu Street retro gaming Hong Kong is a different animal, and the difference matters more than the distance between the two markets. Ap Liu Street is the street market that runs parallel to the Golden Computer Centre. It is where the electronics stalls dump the stuff that did not sell indoors. You will find a box of Sega Mega Drive cartridges under a table selling used rice cookers, and the stall holder will quote you a price that is negotiable down by exactly the amount you would pay for a drink while you argue. The failure case is the stall that offers you a "bundle" of hardware, cables, and a generic AV2HDMI converter. That converter is the reason your Super Famicom looks like a smeared mess on your 4K OLED.

The Converter You Must Refuse

The generic AV2HDMI converter is the single most common piece of retro gaming hardware in Hong Kong, and it is the one you must refuse. It takes the 240p signal that the Super Famicom outputs, misdetects it as 480i, and runs it through a destructive deinterlace that discards half the vertical resolution and adds two to four frames of lag. The result is a picture that looks like wet newspaper and responds like a laggy emulator. The fix is not a better converter. The fix is a scaler that accepts the 240p signal directly. The two you should actually buy are the RetroTINK 5X-Pro and the Open Source Scan Converter, usually called the OSSC.

The RetroTINK 5X-Pro is the reference lag-free scaler. It costs about three times what a generic converter costs. It accepts composite, S-Video, component, and RGB SCART, so it will handle everything from a Famicom to a PlayStation 2. It has a menu system that lets you save profiles for each machine. The OSSC is the foundational lag-free line multiplier. It has no framebuffer, which means lag is measured in microseconds rather than milliseconds. What the OSSC does not have is composite or S-Video input. If your hardware only outputs composite, the OSSC will not accept it, and you will need the RetroTINK. If your hardware outputs RGB or component, the OSSC is the cheaper option that looks every bit as sharp.

The Wan Chai second-hand retro shop scene is a different geography entirely. The Wan Chai Computer Centre at 130-138 Hennessy Road and the 298 Computer Zone at 298 Hennessy Road are both vertical malls, and the retro stock is spread across floors that you would not find without asking. The 298 Computer Zone has a shop on the first floor that specialises in Japanese import units, and it is the rare shop in Hong Kong that will test a purchase with an RGB SCART cable in front of you, then sell you the step-down transformer you need. The Wan Chai Computer Centre has a stall on the second floor that sells used Sony Trinitron consumer CRTs. The PVM and BVM monitors they sometimes get are sold within hours of arriving. If you want a Sony PVM-20L5, check the Hong Kong Retro Game Association's meetup schedule and go to a swap event. That is where the collectors sell to each other.

Spotting a Fake Cable

Verify every cable before you hand over money. The counterfeits are not subtle once you know what to look for, and the documentation from RetroRGB and the Shmups Forum is the reference. A genuine RGB SCART cable has all five pins populated on the SCART end and a shield that is connected to the source end. A fake cable, and this is the common one, has the SCART end wired for composite. The source's RGB signal is never carried at all. The symptom is a picture that looks like composite, because it is composite. The cable is the problem. The way to test: plug it in and look at a 240p test suite pattern. If the text is not razor sharp, the cable is fake. The same test will reveal a counterfeit mClassic, a dongle that claims to upscale to 1440p but actually outputs a 1080p active image area inside a 1440p frame. The fake mClassic will have the same blue LED, but it will not have the green LED processing mode, and it will add measurable lag because it is running a generic scaler chip.

The HDMI Power Problem

The HDMI port power problem is specific to the mClassic and its clones. The mClassic draws its power from the HDMI port. On a Hong Kong set-top box or an under-spec TV port, that power is not always reliable. The symptom is a signal dropout that happens every few minutes. The fix is a powered HDMI splitter. The counterfeit mClassic units have the same power draw profile, but they are worse because they often draw more power than the original. They drop out on hardware where the genuine unit would work. If you are set on the mClassic, buy it from a verified shop that can prove it is genuine, and budget for a splitter. If you want the same processing without the power problem, the RetroTINK 5X-Pro accepts the same inputs and does not need HDMI port power at all.

The HD Retrovision component cable is the exception to the rule that you should avoid the cheapest cable. For a Super Nintendo or a Sega Genesis, the HD Retrovision cable has an integrated transcoder that converts the native RGB to component video. It is the cleanest way to get a high-quality signal out of those machines without a SCART cable. The Insurrection Industries SCART cable is the alternative for units that output native RGB. It is the cable you want if you are plugging into a scaler that accepts SCART. Both are available from verified Hong Kong importers. Both are worth the money over a generic cable, because a generic component cable that is wired wrong will short the video chip.

If the Wan Chai Computer Centre does not have what you need, or it is 1am and every shop is shut, the failure case is the same: go home and buy the scaler online from a verified international retailer, and have it shipped to a Hong Kong PO box. The local retail premium for a RetroTINK 5X-Pro is usually 20 to 30 percent, and the wait for international shipping is about a week. What you should not do is buy a generic AV2HDMI converter from a 24-hour convenience store just because it is available at 2am. That converter will misdetect 240p as 480i, add 30ms of lag, and make Super Mario World feel like it is running through treacle. One bad purchase will cost you more than the good scaler would have cost you in the first place.

The Hong Kong Retro Game Association is your best resource for verification. It is the one event you should actually schedule your trip around. The association holds meetups and swap events on a regular basis, and the Retro.HK event is annual. At these events, the collectors bring their own gear. You can test a machine, a cable, or a scaler with your own eyes before you pay. The association also publishes a list of shops that have agreed to verify their stock. That list is the only retail endorsement worth following. If a shop is not on that list, the shop may still be honest, but you are taking a risk that the RetroTINK 5X-Pro in the display case is a counterfeit, or that the "genuine" mClassic has a green LED that does not work.

The 240p test suite is the tool that settles every argument. Load it on every unit you own. It is a homebrew ROM that displays test patterns for lag, geometry, and colour accuracy. It is the only way to know for certain whether a cable is carrying RGB or composite in disguise. Load the test suite, look at the scrolling text pattern, and check the colour bars. If the text is smeared, the cable is fake. If the colours are bleeding, the scaler is applying a destructive deinterlace. If the grid lines are not straight, the geometry is off. Every one of these failure modes is invisible in normal play, and every one of them is a reason the game looks wrong in a way you cannot quite name.

The Hong Kong voltage standard is the one thing that catches every new collector. Hong Kong mains voltage is 220V at 50Hz, and the plug type is Type G, the three rectangular pins. A Japanese Super Famicom is engineered for 100V. A PAL unit is engineered for 220V. The frequency difference between 50Hz and 60Hz matters for hardware that uses the mains frequency to time its internal clocks. The Sega Mega Drive released in Hong Kong in 1990, and the Super Nintendo released in 1992. Both were the NTSC-J variants, which means they run at 60Hz. The PAL versions run at 50Hz. The game plays slower and the music plays lower. If you buy a PAL unit in Hong Kong, you are buying hardware that will run your imported NTSC-J games at the wrong speed. No scaler can fix that.

The Sony PlayStation 2 released in Hong Kong in 2001. It is the best value in retro gaming in the city today. The PS2 natively outputs 480i over component or RGB SCART, and a select number of titles support progressive scan at 480p over component. The PS2 is also the cheapest way to play the entire PlayStation 1 catalogue, because the system natively plays PS1 discs. The catch is that the PS2's video output is noisy. You need a good component cable or a good SCART cable to get a clean picture. The HD Retrovision component cable for PS2 has an integrated transcoder. It is the best cable for the system. The Nintendo GameCube released in Hong Kong in 2002, and it is the opposite story. The GameCube's maximum native output is 480p, but only the NTSC model DOL-001 with the digital out port can do it, and only through a component cable that costs more than the unit. The PAL model tops out at 480i over RGB SCART. The GameCube is not worth the component cable premium. The failure case is buying a DOL-001 and then discovering you cannot find a component cable for less than the price of a RetroTINK 5X-Pro.

The RetroTINK-4K is the upgrade that makes the RetroTINK 5X-Pro look like a budget option. It accepts SCART, component, S-Video, composite, and VGA via a DE-15 connector. The 4K model is overkill for a 4K OLED that processes 1080p signals internally, but it is the only scaler that does not rely on the TV to do the upscaling. It is the one that has the most accurate CRT simulation filters. The OSSC accepts SCART and component via a DE-15 connector. It is the scaler for the purist who wants to measure the lag in microseconds. The OSSC has no composite input, so it cannot accept a signal from a source that only outputs composite. The GBS-Control is the budget option that is not worth the money. It exhibits chroma artifacts on fast-moving red objects, and the motion-adaptive deinterlacing is not adaptive enough.

The composite versus S-Video distinction is the one that separates the casual from the committed. Composite carries luminance and chrominance on one wire, which causes dot crawl artifacts, a pattern of moving dots on the edges of colours. S-Video separates the two signals onto two wires, which eliminates dot crawl but still uses a shared clock. Component video carries the signal as three separate colour-difference signals. That is why it is the North American consumer standard. RGB carries four separate signals: red, green, blue, and sync. That is why it is the European standard. The scaler you choose must accept the signal type your source outputs. The RetroTINK 5X-Pro accepts everything except VGA. The OSSC accepts SCART and component, but not composite or S-Video. If your hardware only outputs composite, the RetroTINK is the only option. You should also buy an S-Video cable for the units that support it, because the difference is not subtle.

The 240p versus 480i distinction is the one that explains why your Super Famicom looks bad on a modern TV and why a scaler fixes it. 240p is a progressive scan mode that displays one field of 240 lines, then leaves a blank line before the next field. 480i is an interlaced mode that displays alternating fields of 240 lines. That is why it looks like it is flickering. The generic AV2HDMI converter sees the 240p signal and misdetects it as 480i, then deinterlaces it. This destroys the progressive scan structure and adds combing artifacts. The RetroTINK and the OSSC both detect 240p correctly and process it as progressive. That is why they produce a clean image. The 240p test suite is the tool that shows you the difference. It displays a test pattern designed to reveal the combing artifacts that the misdetection causes.

The MiSTer FPGA is the alternative to original hardware. The Hong Kong Retro Game Association endorses it for the gamer who does not want to maintain a shelf of original units. The MiSTer is an open-source hardware emulation platform that uses a DE10-Nano board. It replicates systems at the logic level, which means the output is a perfect copy of the original hardware's output, not an emulation of it. The MiSTer accepts the same RGB and component output standards as original hardware. It is the only platform that can output a 240p signal that is indistinguishable from a real unit. The Analogue Pocket is the portable alternative, but it is not a replacement for a scaler, because it only outputs to its own screen or a dock. The MiSTer is the one that plugs into your scaler of choice.

The RetroTINK 5X-Pro versus OSSC decision comes down to one question: do you need composite input? The RetroTINK has composite and S-Video input, and it accepts component and RGB SCART. The OSSC has SCART and component input via a DE-15 connector. It has no composite. If you have a Famicom that only outputs composite, the RetroTINK is the only choice. If you have a Super Nintendo that outputs RGB, the OSSC is the cheaper choice that looks every bit as sharp. The OSSC also has a feature that the RetroTINK does not: a reference frequency that removes the colour bleeding that some hardware exhibits. The RetroTINK has a menu system that is easier to navigate, and it has profile saving that the OSSC lacks. The OSSC is the one that the Shmups Forum collective developed the lag testing methodology for. It is the one that has the most detailed documentation.

The mClassic 1440p output claim is the one that generates the most arguments. The reality is that the mClassic takes a 1080p active image area and outputs it inside a 1440p frame. That is not the same as a native 1440p render. The mClassic also has a green LED processing mode that applies an anti-aliasing filter. That filter softens the image in a way that some people like and some people hate. The genuine mClassic draws power from the HDMI port, and it has a blue LED that is always on when it is powered. The counterfeit mClassic has the same blue LED, but it has no green LED, and it often has a lower quality scaler chip that adds lag. The only way to be certain you have a genuine mClassic is to buy it from a verified shop and to test it with the 240p test suite.

The component versus RGB distinction is the one that trips up the North American gamer who moves to Hong Kong. Component video is the North American standard. It uses three RCA jacks. RGB SCART is the European standard. It uses a 21-pin connector. The two are not interchangeable. Plugging an RGB SCART cable into a component input will not work. The HD Retrovision component cable is the one that has an integrated transcoder. It converts the source's native RGB to component, so you can plug it into a North American TV. The Insurrection Industries SCART cable is the one that carries RGB directly. It is the one you want if you are plugging into a scaler with a SCART input. The two cables are not interchangeable. The failure case is buying a SCART cable for a TV that only has component input.

Sham Shui Po: Morning Versus Afternoon

The Sham Shui Po electronics market is the physical hub, and the Golden Computer Centre is the anchor. The building at 146-152 Fuk Wa Street in Sham Shui Po, Kowloon, has a concentration of retro hardware on the ground floor and the lower ground floor. Ap Liu Street is the street market that runs parallel. It is where the stalls dump the stuff that did not sell. Book a morning for the Golden Computer Centre. The stalls are open by 11am, and the serious collectors arrive at opening to get first pick. Ap Liu Street is better in the afternoon, when the day's deliveries arrive. The Wan Chai Computer Centre at 130-138 Hennessy Road and the 298 Computer Zone at 298 Hennessy Road are the vertical malls. Visit them when the Sham Shui Po stalls are closed, because the Wan Chai shops stay open until 9pm.

The Hong Kong Retro Game Association's meetups are the only place where the verification is not a gamble. At a meetup, you can bring a unit and test it against a RetroTINK 5X-Pro that the association has verified. You can ask the collector who owns the scaler whether it is worth the price. The Retro.HK event is the annual one. Plan a trip around it, because the swap meet tables have the best prices and the most authentic hardware. The failure case is a meetup that is cancelled, or a swap event that is moved. The fallback is the Golden Computer Centre on a Tuesday morning, when the stock is fresh and the stall holders are less busy. The meetups are the only place where a stall holder will hand you a screwdriver and let you open the unit. That is the test that separates the verified from the rest.

The 240p test suite is the lingua franca. Download it before you leave the house. The test suite is a homebrew ROM that displays lag, geometry, and colour test patterns. It is the only way to know whether a scaler is adding lag, whether a cable is carrying RGB, and whether a CRT is converging correctly. Load the test suite onto a flash cart. Run it the moment you get home with any new purchase. The test suite will show you a 240p pattern that is designed to reveal the difference between 240p and 480i. It will show you a scrolling bar that reveals lag in milliseconds. The test suite is the difference between guessing and knowing. It is the only way to be certain that the RetroTINK 5X-Pro you just bought is not a counterfeit.

The Hong Kong mains voltage is 220V, and the plug type is Type G. That is the one fact that the uninitiated get wrong. A Japanese unit from the 1990s expects 100V at 60Hz. A PAL unit expects 220V at 50Hz. The frequency difference matters. Some games use the mains frequency to time their internal clocks, and a PAL machine will play a 60Hz game at the wrong speed. The step-down transformer is the permanent requirement. It is not optional. The failure case is buying a unit that has been region modded. The region lock has been bypassed, but the power supply has not been changed. The unit will blow up the moment you plug it in without a transformer. The 240p test suite will not save you from a blown input cap. A verified shop will not sell you hardware without asking about your transformer.

The Wan Chai second-hand retro shop scene is not the place to buy a scaler. The markups are higher and the stock is thinner. The Wan Chai Computer Centre has a stall on the second floor that sells used Sony Trinitron consumer CRTs. The 298 Computer Zone has a shop on the first floor that specialises in Japanese import units. The 298 shop is the one that will test a purchase with an RGB SCART cable in front of you. It is the one that stocks the Insurrection Industries SCART cable and the HD Retrovision component cable. The Wan Chai shops are the place to buy a unit, because the selection of Japanese import hardware is better than in Sham Shui Po. The scaler you buy from the verified international retailer will be cheaper than the scaler you buy from the Wan Chai shop, even with the shipping cost.

The RetroTINK-4K is the one that costs more than a used machine. Skip it unless you have a 4K OLED and a need for the absolute best image quality. The RetroTINK-4K accepts SCART, component, S-Video, composite, and VGA via a DE-15 connector. It processes every signal type without a single compromise. The RetroTINK-4K is the one that has the most accurate CRT simulation filters. It is the one that the Hong Kong Retro Game Association uses at its meetups as the reference. The OSSC is the one that is good enough for most people. The RetroTINK 5X-Pro is the one that is good enough for everyone else. The 4K is the one that is for the collector who has already spent more than the scaler costs on a single PVM.

The GBS-Control is the budget option that is not worth the money. The Hong Kong Retro Game Association explicitly warns against it. The GBS-Control is a modified GBS-8200 board that has been reflashed with custom firmware. It claims to do motion-adaptive deinterlacing. The reality is that the motion-adaptive deinterlacing exhibits chroma artifacts on fast-moving red objects, and the 240p detection is not reliable. The GBS-Control costs about half the price of an OSSC. It is not half as good. The failure case is buying a GBS-Control, discovering that the 240p test suite shows combing artifacts, and then buying an OSSC anyway. The total cost is higher than if you had bought the OSSC to begin with. The verified shops in Sham Shui Po will not stock the GBS-Control, because they know it fails the 240p test.

The Sony BVM-D24E1WU is the absolute peak of CRT image quality. The Hong Kong second-hand market prices it at a premium that has no ceiling. The BVM is a broadcast monitor that was used in post-production suites. It supports 240p to 1080i, which makes it the perfect display for retro gaming. The BVM is the one that the CRT-curious enthusiast in Hong Kong dreams about. It is the one that the collectors at the Retro.HK event talk about in hushed tones. The failure case is finding a BVM at a price that seems too good to be true, and then discovering that the tube has burn-in, or that the power supply is dead. The BVM is the one that you should only buy from a verified shop. A BVM is a weighty piece of glass that costs more to ship than it does to buy.

The Sega Dreamcast released in Hong Kong in 1999. It is the one machine that does not need a scaler at all. The Dreamcast has a VGA output that natively supports 480p. It is the one unit that looks perfect on a modern LCD without any processing. The Dreamcast also has a composite output that is terrible. The VGA output is the one you should use. The Dreamcast is the one that the retro gaming community agrees is the easiest to set up on a modern TV. A VGA cable and a VGA-to-HDMI converter will produce a picture that is indistinguishable from a scaler with all the processing turned off. The Dreamcast is the one you should buy before you buy a scaler, because it is the one that does not need one.

The Nintendo GameCube released in Hong Kong in 2002. It is the one that is not worth the component cable premium. The GameCube's maximum native output is 480p, but only the NTSC model DOL-001 with the digital out port can do it. The component cable for that port costs more than a RetroTINK 5X-Pro. The PAL GameCube tops out at 480i over RGB SCART. Buy that one if you want to play GameCube games on a budget. The GameCube is the one where the scaler does not help, because the output is already limited by the cable. The failure case is buying a DOL-001, discovering that the digital out port is covered by a plastic cap, and then losing a week of your life trying to find a component cable that does not cost more than the unit.

The Super Nintendo released in Hong Kong in 1992. It is the one that every collector owns. The Super Famicom NTSC-J is the Japanese variant, and it is the one that runs at 60Hz. The PAL Super Nintendo runs at 50Hz. The game plays slower and the music plays lower. The Super Nintendo outputs native RGB via a multi-out connector. It is the one that benefits the most from an RGB SCART cable and a scaler. The Super Nintendo is the one that the Hong Kong Retro Game Association recommends as the first purchase. It is easy to repair, easy to mod, and easy to find. The failure case is buying a Super Nintendo that has been region modded. The region lock has been bypassed but the RGB output has not been restored. The picture is a black and white mess.

The Sega Mega Drive released in Hong Kong in 1990. It is the one that has the most confusing video output of all. The Mega Drive model 1 has a proprietary video output connector that carries composite, RGB, and S-Video. The pinout is different from every other unit. The Mega Drive model 2 uses a standard 9-pin connector that is compatible with Sega Saturn and Sega Genesis cables, but the RGB signal is wired differently. The HD Retrovision component cable for the Mega Drive has an integrated transcoder that converts the native RGB to component. It is the one cable that works with every model. The Insurrection Industries SCART cable is the alternative. It is the one that the Shmups Forum collective recommends for the Mega Drive. The Mega Drive is the one where you should spend the extra money on a verified cable. A generic cable will short the video chip.

The Sony PlayStation 2 maximum native output is 480i. It is the workhorse of the Hong Kong retro scene. The PS2 plays every PS1 game. It has a huge library of exclusive titles that were never released outside Asia. The PS2 outputs component video. The HD Retrovision component cable is a significant upgrade over a generic cable, because the generic cable is often wired for composite and the difference is visible. The PS2 also supports progressive scan at 480p for a select number of titles, but only through component. Buy the PS2 before you buy a scaler. It benefits the most from a good cable. The failure case is buying a PS2 slim, discovering that the component output is noisy, and then realising that the noise is caused by the power supply.

This guide is best for the traveller who wants to buy a scaler, connect a Super Famicom, and play on a modern OLED without any of the research. It is also for the CRT-curious enthusiast who has a Sony PVM-20L5 and wants to understand the RGB modding and the 50/60Hz regional pitfalls. It is not for the emulation pragmatist who is happy with a Raspberry Pi, because the MiSTer FPGA is a better fit for that traveller. It is also not for the first-time buyer who just wants to play a game and does not care about the difference between composite and RGB. That traveller should skip the scaler entirely and buy a Dreamcast with a VGA cable, because it is the one unit that works on a modern TV without any processing.