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You can run two older game consoles on one television without moving cables every time, but there is no universal cable or box. First identify the video output from each console and the inputs your TV actually has. Then choose one of three paths: connect each console directly to a matching TV input, place an AV selector in front of a single matching input, or convert the consoles’ analog signals to HDMI with a compatible scaler. A selector chooses a source; a scaler changes the signal format for the display. Confusing those jobs is the most common cause of a setup that never shows a picture.
Start with a connector and signal inventory
Before buying anything, write down the exact console models, the cables you own, and every labeled input on the television. Plug colors are clues, not proof: a console may use a proprietary multi-out connector at its end, and two cables with similar RCA plugs can carry different signal types.
Identify each console’s output
- Composite (CVBS): Usually a yellow RCA plug for video plus red and white RCA plugs for stereo audio. Some systems expose composite through a proprietary socket and require a model-specific cable.
- S-Video: A separate round connector carrying brightness and color on different channels. It is not interchangeable with composite even though both are analog.
- Component (YPbPr): Green, blue and red video plugs, normally accompanied by red and white audio plugs. The three video colors are not the same as a red-white-yellow composite lead.
- SCART or RGB: A large multi-pin connector used on many European televisions and consoles. SCART wiring can carry different signal types, so the device receiving it must support the particular RGB, composite or sync arrangement.
- RF: An antenna-style connection that sends the console through a television tuner. RF is a different signal path from the line-level inputs above and often needs a tuner or a console-specific demodulator.
Identify the television’s inputs
Look for labels such as AV, Composite, CVBS, S-Video, YPbPr, Component, SCART, Antenna/RF and HDMI. A television may have a 3.5-mm breakout cable rather than full-size RCA sockets; check whether its pinout matches the supplied adapter. Also note whether the television has one physical input shared by several labels, or separate sockets that can be selected independently.
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Choose the wiring path that matches your equipment
Path 1: Connect each console directly to a matching TV input
This is the simplest arrangement when the television has two compatible inputs. Connect console A to one input and console B to another, connect their audio plugs to the corresponding audio jacks, power both systems, and use the TV’s Input, Source or AV button to select the desired socket. If one console is composite and the other is component, direct connection can still work when the TV provides both types.
- Turn off the TV and both consoles while making connections.
- Run each console’s video and audio cable to a matching, clearly labeled TV input.
- Turn on the TV, then the console you want to use.
- Press the TV remote’s Source/Input button and select the socket used by that console.
- Repeat the source selection when switching systems; you do not need to unplug either cable.
Direct connection avoids another powered device and introduces no additional conversion stage. Its limitation is physical: many newer televisions omit analog inputs, and a set may offer only one composite socket even though you have two composite consoles.
Path 2: Share one analog input with an AV selector
If both consoles output the same analog format and the TV has one matching input, use an AV switcher (also called an input selector). For two composite consoles, a composite AV switcher with at least two composite inputs is the appropriate category. Connect each console to an input on the switcher, connect the switcher’s output to the TV’s composite input, and press the switcher’s button for the system you want.
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- Verify that both consoles and the TV use the same format, such as composite video.
- Connect console A’s video and audio leads to switcher input 1.
- Connect console B’s leads to switcher input 2.
- Connect the switcher’s output to the television’s matching input.
- Set the TV to that input once, then select console A or B on the switcher.
A selector only changes which source is electrically connected. It does not turn composite, S-Video, component, SCART or RF into HDMI, and it does not repair an incompatible signal. A passive unit may not need its own power; an active unit may require USB or an adapter. Follow the model’s audio and video labeling so that red and white audio are not accidentally plugged into a video socket.
Path 3: Convert analog sources for an HDMI-only television
When the TV accepts HDMI only, an analog-to-HDMI scaler or converter must sit between the consoles and the display. The box must explicitly accept the signal produced by your consoles. A generic product described only as “retro” or “HDMI” is not enough evidence of compatibility.
There are two practical layouts:
- One selector, then one scaler: Use this when both consoles share a format that the selector and scaler support. The selector chooses a console; the scaler converts the selected analog signal and sends HDMI to the TV.
- Separate conversion paths: Use this when the consoles use different formats or the scaler lacks one of them. Convert each source with a compatible unit, then select the resulting HDMI outputs with an HDMI switcher, or leave one converted source on a second TV HDMI input.
Typical wiring is console outputs to selector inputs, selector output to the scaler’s matching analog input, scaler HDMI output to the television, and scaler power connected before testing. If the scaler has several analog inputs itself, it may replace the separate selector, but confirm that its input selection supports the exact formats you use.
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Match signal type, resolution and region
Compatibility is three-dimensional: connector, signal standard and timing must all match. A plug can physically fit while the receiving device rejects the electrical signal.
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| Console signal | What the selector must accept | What the scaler must accept | Typical notes |
|---|---|---|---|
| Composite/CVBS | Composite input and corresponding audio | Composite input; output HDMI | Yellow video plus red/white audio is common, but proprietary console ends still need the correct cable. |
| S-Video | S-Video input, if switching is required | S-Video input; output HDMI | Do not substitute a composite cable or assume an adapter changes the signal. |
| Component/YPbPr | Component-capable switching | Component input and the console’s scan rates | Green, blue and red are video; red/white audio remains separate. |
| SCART/RGB | SCART or the documented RGB wiring | SCART/RGB support with the required sync | SCART is a connector standard, not one guaranteed video mode. |
| RF | RF-capable selector or tuner path | A scaler that explicitly accepts the demodulated or tuner output | Do not assume a line-level analog scaler can read an antenna signal. |
Also check the console’s video timing and regional version. NTSC and PAL systems can output different color and refresh standards, and some early consoles produce 240p or 288p signals that ordinary modern-video equipment handles poorly.
Example: what the RetroTINK-2X Pro specification does and does not mean
The manufacturer’s documentation for the RetroTINK-2X Pro lists composite, S-Video and component inputs, digital video output, and support for 240p, 288p, 480i and 576i inputs. It line-doubles supported standard-definition sources; it does not accept 480p or higher input. The page also identifies the 2X Pro as a legacy product and listed a price of $139.99 when accessed in 2026, so availability and price can change and should be checked before purchase.
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That specification makes the unit an example of a scaler for certain analog consoles, not a universal answer. The same documentation warns that 480i bob deinterlacing may flicker. It flags Sega Genesis and PS1/PSOne composite output as potentially problematic and gives different cable guidance. It also says the optional N64 S-Video cable is for NTSC consoles. If your system is PAL, uses an off-spec composite signal or outputs 480p, this particular legacy scaler is not an appropriate assumption; find a device whose input list and regional support explicitly match your hardware.
Build a two-console setup step by step
Two identical composite consoles and a TV with composite input
- Confirm that each console’s cable really outputs composite and that the TV has a composite video input.
- Choose a two-input composite AV switcher. Make sure it has enough audio channels for stereo if you want stereo sound.
- Connect console 1 to switcher input 1 and console 2 to input 2, matching video and audio labels.
- Connect the switcher’s output to the TV’s composite input.
- Power the switcher if its instructions require it, then select the corresponding switcher input.
- Set the television to its AV/CVBS source and test both consoles separately.
Two consoles with an HDMI-only TV
- Inventory whether each console is composite, S-Video, component, SCART/RGB or RF.
- Pick a selector that accepts both signals, or plan separate conversion paths when they differ.
- Pick a scaler whose analog input list includes the exact console formats and whose supported timings include the consoles’ output resolutions.
- Connect the console outputs to the selector or scaler, then connect the scaler’s HDMI output to the TV.
- Select the TV’s HDMI port, power the scaler and chosen console, and wait for lock-on before changing settings.
- Save or label the TV HDMI input if the television allows custom source names.
One composite console and one component or SCART console
Do not force both into a composite-only switcher. Use a scaler with separate selectable composite and component inputs only if its manual confirms both formats, or convert each console independently and switch the HDMI outputs. If one source is incompatible with your scaler, keeping that console on another TV input is safer than relying on an unverified adapter chain.
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Selectors, scalers and converters: what each box does
| Device | Primary job | What it cannot do | Use it when |
|---|---|---|---|
| Analog AV selector | Chooses one of several analog sources and forwards it | Does not change resolution or convert analog to HDMI | Several same-format sources share one matching TV input. |
| Analog-to-HDMI scaler/converter | Accepts specified analog formats and outputs a display-compatible digital signal | Cannot accept formats or timings absent from its specification | The TV lacks the console’s analog input, especially on HDMI-only sets. |
| HDMI switcher | Chooses among already-converted HDMI sources | Cannot read a console’s analog output directly | Separate scalers produce multiple HDMI outputs. |
Some products combine these functions. Treat the input list, output type and supported resolutions as separate checks; a box can switch two HDMI sources without scaling analog video, or scale one analog source without switching two consoles.
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Troubleshoot in the order that eliminates the most causes
No picture or “no signal”
- Confirm the TV is on the source connected to the final output. A working console on AV will appear blank while the TV is set to the wrong HDMI port, and vice versa.
- Trace the cable in one direction: console output, selector input, selector output, scaler input, scaler HDMI output, TV HDMI input. Correct any cable placed in an input instead of an output.
- Check power for the console, active selector and scaler. Some units do not pass video until their power supply is connected.
- Test one console directly, if the TV has a matching input, to determine whether the console and cable produce a usable signal.
- Verify that the scaler explicitly supports the console’s format and timing. A TV fault is less likely than an unsupported 240p, PAL, RGB or RF signal.
Picture appears in black and white or with unstable color
Check for a composite/S-Video mismatch, NTSC/PAL incompatibility, or a component cable connected to composite jacks. A connector adapter cannot necessarily translate the underlying color encoding. Recheck the console region and the scaler’s supported standards.
Picture rolls, flickers or drops out
Remove unnecessary adapters and test the console-to-scaler connection alone. Some deinterlacing modes flicker with 480i; the RetroTINK-2X Pro documentation specifically warns about possible 480i bob-deinterlacing flicker. Try the scaler’s documented mode options, but do not expect a setting to make an unsupported resolution compatible.
Sound works but video does not, or the reverse
Inspect each channel independently. Red and white are normally audio, while yellow is composite video; component uses green, blue and red for video and still needs separate audio. On proprietary console cables, verify the cable is made for the exact model rather than relying on plug color alone.
One console works through the switcher and the other does not
Swap the two switcher inputs. If the failure follows the console, investigate its cable, output standard or hardware. If it stays with one switcher port, inspect that port or the switcher’s compatibility. Test the failing console directly into a matching TV or scaler input before replacing the switcher.
How to select equipment without guessing
- For two same-format analog sources and an analog TV input: Buy only a selector with the required number of inputs and matching audio/video connectors.
- For an HDMI-only TV: Budget for a scaler or converter that names every console signal you need; a selector alone cannot solve this.
- For mixed formats: Prefer a documented multi-input scaler, or plan separate converters and an HDMI switcher.
- For unusual or regional consoles: Check NTSC/PAL, RGB sync, 240p/288p, 480i/576i and cable-specific notes before purchase.
- For future expansion: Count actual console inputs, not just the number of buttons. Leave one spare input if you expect to add another system.
Image quality, latency and price can influence the final choice, but no current market-wide price or hands-on performance comparison is established here. Treat the published compatibility list as the minimum requirement and verify availability at the time you buy.
Safety and reliability practices
- Power down consoles before inserting or removing unfamiliar analog connectors.
- Label both ends of every cable, especially when several systems use similar proprietary multi-outs.
- Keep the scaler and active switcher on stable power supplies; intermittent USB power can resemble a bad video cable.
- Do not stack several unpowered adapters and expect them to preserve signal quality or sync.
- Store the original direct cables so you can bypass the selector and scaler during diagnosis.
A practical decision checklist
- What exact output does console 1 produce?
- What exact output does console 2 produce?
- Which matching inputs are physically present on the TV?
- Can each console connect directly, or is only one matching TV input available?
- If sharing an analog input, does the selector support both formats and stereo audio?
- If the TV is HDMI-only, does the scaler accept both consoles’ signals and regional timings?
- Does the final chain have the correct number of outputs and power connections?
- Can you test each console separately before introducing the next box?
Answering those questions produces a wiring plan specific to your consoles and television instead of assuming that every retro system uses the same cable.
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