4 in 4 out Composite Video Amplifier, RCA Connector
The 4 in 4 out composite video amplifier is designed to boost and distribute analogue video signals over long distances while maintaining image quality. With RCA connectors, 1000 m transmission range and image controls, it’s ideal for CCTV and AV installations that need reliable multi-channel video.
Quick definition: This device takes up to four composite video inputs, amplifies and equalises the signals, and then outputs them to four channels with adjustable sharpness and brightness for crystal-clear images even over long RG59 coaxial runs.
Use it to stabilise video feeds from cameras, DVRs, multiplexers, VCRs and other AV sources wherever cable length, splitting or interference would otherwise degrade picture quality.
4 in 4 out RCA composite 1000 m range Sharpness & brightness control HF compensation
What does this composite video amplifier do?
This amplifier improves and stabilises low-level or long-distance composite video signals so your monitors and recording devices receive a strong, clean picture.
- Amplifies video gain to compensate for signal loss over coaxial cables.
- Provides HF (high-frequency) compensation to recover fine image details.
- Lets you tune image quality via front-panel sharpness and brightness adjustments.
- Supports multiple devices thanks to four input and four output channels.
Where can you use the 4 in 4 out video amplifier?
The unit is purpose-built for security and AV environments where consistent video quality is essential, even when equipment is spread across a site.
Typical applications
- CCTV systems: Boost camera feeds running over long RG59 coax to DVRs or monitors.
- Security control rooms: Stabilise multiple analogue video feeds going into multiplexers.
- AV and broadcast accessories: Improve composite output from VCRs, DVRs or media players.
- Large venues: Extend video to distant displays in halls, campuses or retail spaces.
Because it uses standard RCA connectors, integration with existing analogue equipment is fast and straightforward.
Key features of the 4 in 4 out composite video amplifier
This compact ABS black module packs professional-grade amplification and image control into a simple, installer-friendly design.
- 4 RCA video inputs & 4 RCA video outputs for multi-channel setups.
- Wide bandwidth: 10 Hz – 10 MHz for accurate composite video reproduction.
- Video gain compensation: up to 10 dB adjustable image gain.
- HF compensation: restores lost high-frequency detail for sharper images.
- Adjustable sharpness and brightness: optimise each installation on-site.
- Long-distance support: transmission range up to 1000 m over RG59 coaxial cable.
- Power indicator: red LED clearly shows power on/off status.
- Included power supply: DC 12 V / 500 mA adapter in the box.
Technical specifications
Below is a summary of the main technical parameters for system designers and installers.
| Parameter |
Specification |
| Product name |
4 in 4 out Composite Video Amplifier, RCA connector |
| Video input channels |
4 |
| Video output channels |
4 |
| Video input level |
0.8 – 1.2 Vp-p, 75 Ω |
| Video output level |
1 Vp-p (standard), 75 Ω |
| Video bandwidth |
10 Hz – 10 MHz |
| Gain / image adjustment |
10 dB adjustable gain, sharpness & brightness control |
| Transmission range |
Up to 1000 m (RG59 coaxial cable) |
| Power supply |
DC 12 V / 500 mA (adapter included) |
| Power consumption |
Approx. 220 mA |
| Dimensions |
138 mm x 89 mm x 31.5 mm |
| Weight |
145 g |
| Material |
ABS, black |
What comes in the package?
Everything you need to get started is included in the retail box, making installation quick and hassle-free.
- Video Amplifier x1
- Screw set x1
- DC 12 V Adapter x1
- User Manual x1
How do you install the video amplifier?
Installation is straightforward for CCTV and AV technicians familiar with composite video systems.
- Mount the amplifier securely using the supplied screw set in a dry, ventilated location.
- Connect your composite video sources (cameras, DVR, multiplexer etc.) to the four RCA input ports.
- Connect the outputs to your monitors, DVR or other receiving devices using RG59 coaxial cables.
- Plug in the included 12 V power adapter; confirm the red LED lights to indicate power on.
- Use the front-panel sharpness and brightness controls to fine-tune the image.
Always follow local electrical and low-voltage wiring standards for safe, reliable operation.
4 in 4 out composite video amplifier FAQs
Yes. The amplifier is designed for composite video signals and works perfectly with analogue CCTV cameras, multiplexers, VCRs and DVRs that use RCA or BNC (with suitable adapters) connections. It boosts and equalises the signal before it reaches your recording or monitoring equipment.
The amplifier supports transmission distances of up to approximately 1000 meters when using RG59 coaxial cable and correctly terminated 75 Ω video equipment. Actual performance may vary depending on cable quality and installation conditions.
Yes. A matching DC 12 V / 500 mA power adapter is included in the package, so you don’t need to source a separate PSU. The red LED on the front panel confirms when the unit is powered on.
A basic splitter simply divides the video signal, often reducing its strength and quality across multiple outputs. This unit amplifies and equalises the signal with gain and HF compensation, ensuring that each output receives a clean, properly levelled video feed even over long cable distances.
The front panel includes separate controls for sharpness and brightness. While observing your monitor, slowly turn each control until the image looks clear, detailed and correctly balanced. Make small adjustments and allow the picture to stabilise before fine-tuning further.
