Panamax MR4300 Review for 2020 – You can’t go wrong with this one!


Last updated on the 23rd. March 2020

From time to time people ask me what form of protection against power surges and spikes is best for audiovisual systems in the home. My answer has always been the same. Invest in an energy management and air conditioning system with surge protection. The Panamax MR4300 is at the top of my list of recommendations when people ask what brand and model to consider. It is a well-known brand trusted by most technology experts.

For more than 4 decades, Panamax has been protecting billions of dollars worth of electronics from harmful energy conditions such as power surges and spikes.

In this introduction to the Panamax MR4300 I will talk about the many possibilities and advantages of the MR4300.

I will also explain why this is a brand and model that we strongly recommend to our friends and customers.

Panamax MR4300 MR4300 9 Home theatre power management with peak protection and power conditioning

Panamax MR4300 Key features and benefits


9 Specially designed and prepared products

The MR4300 is supplied with nine outputs [5 with switched linear filtering and 4 with switched high current] that provide surge protection, power filtering and monitoring. It is an ideal candidate for use with a home cinema and a home audio system.

Patented automatic voltage control (AVM)

My team and I always recommend Panamax MR products, especially with AVM technology.

With AVM technology, you can be sure that the incoming power supply is constantly monitored.

In the event of undervoltage (brown) or surge (surge), the power supply to the connected devices and systems is switched off.

The power supply is automatically restored as soon as the safety voltage is reached again. When such an event occurs, a red blinking indicator appears on the display of the MR4300.

Protection or Shutdown™Technology

It was another exclusive Panamax core protection technology that made a special impression on me. Your Protect or Disconnect™ technology has a high-speed protection circuit to protect connected devices from unexpected power surges.

If the surge is very high and exceeds the protection capacity of the MR4300, the AC supply of all connected devices is permanently switched off. In this way, you protect all connected electrical devices against baking.

Fault and dangerous mains voltage indicator

With these two lights it is not necessary to guess when they will light up.

The Hazardous Voltage Indicator indicates that the input voltage is dangerous and that the surge suppressor has turned off the power to your device.

If the line error indicator lights up, have our plug checked by a qualified electrician to ensure that the wiring is correct and safe.

Digital Voltmeter

This display panel helps you control the voltages that power your home theater and audio equipment.

Flashlights for front panel

There are two switchable lamps that allow you to watch your media and home cinema system in the dark.

USB charging (0.5 V/5 V)

The Panamax MR4300 also has a unique USB port, which is useful for charging things like a mobile phone or a smart watch.

Protection of antenna, cable or satellite signals, LAN and TELCO signals

If you have antennas, TELCO, Ethernet and coax cables that need surge protection, the MR4300 will also cover them.

With this protection you can enjoy an endless stream of Full HD and broadband internet signals to your connected AV systems.

Level 3 linear filtration + outputs for high cure

Thanks to the Panamax MR4300’s double insulated connections with 4 high-current and 4 mains filter outputs, you can expect significant improvements in the picture quality and sound effects of your AV equipment.

Overview of the MR4300

8-foot power cable with blade clamps

8 feet is the ideal length to reach an AC power source in a remote location.

Panamax MR4300 9-Output Home Theater Power Management with Peak and Power Protection

Panamax MR4300 9-Home Theater Power Management Device with peak protection and power supply

  • 9 protected and filtered outputs with exclusive Automatic Voltage Control (avm), Panamax Level 3 protection or shutdown and noise filtering technology.
  • The best protection in the industry – specially designed and developed for protected and filtered home cinema power.
  • Protects against harmful power surges and fluctuations in current that can damage the AV system components and adversely affect performance.
  • 5,000,000 USD Protection policy for devices with limited lifespan; Lifetime product warranty
  • With more than 30 years of innovation, millions of units sold, numerous patents and industrial awards, Panamax is a recognized leader in the protection of audiovisual equipment.

What do we like?

Needless to say, Panamax’s patented Automatic Voltage Monitoring (AVM) and Protect of Disconnect™ are two features I love.

The power management and monitoring function as well as the surge protection make the Panamax MR4300 a much more cost effective investment than most Type 3 surge protection devices.

General assessment

The Panamax MR4300 is an excellent home cinema with power and climate control and an investment in surge protection that I highly recommend. They come with a lifetime warranty and an impressive protection policy for connected devices with a lifetime limit of $5,000,000.


  • Automatic voltage monitoring (AVM)
  • Technology protection or shutdown
  • Digital Voltmeter
  • Front lights
  • Indicators for line errors and dangerous voltages
  • 2 Insulated high-current connections and linear filter outputs
  • USB charging slot
  • 8-foot power cable
  • 15 One circuit breaker
  • Lifetime product warranty


  • 1 single USB charging slot
  • Supplied with Cat5 Ethernet cable
  • No sockets Always in use

Minor defects – What to expect

One customer noted that the orientation of the tree is 90 degrees compared to the standard tree, making it difficult to use all 8 trees without blocking the adjacent trees.

I think it’s all subjective when it comes to how we align the power cord when we plug it in.

Another person indicated that radio interference is poorly filtered because she experiences some static electrical interference in her system when she turns on the lights in the room.

Personally, I feel like it could have been a single incident. EMI/RFI malfunctions must be properly filtered out. The MR4300’s line filter function eliminates all contaminated flow, including loss of parts, cotton, noise and visual artifacts.

Who should buy it?

If you have an expensive home theater system to protect you from power surges and unexpected lightning strikes, you really should take a look at the MR4300.

Power management and conditioning functions can help protect all your equipment from hazardous voltages.

Who shouldn’t buy it?

If your budget is tight and you don’t have an expensive home entertainment system to monitor and manage your power supply, the APC P11U2 Network Filter should do it. You do not need to purchase the MR4300 if you want to connect critical devices such as your security camera or internet router. Always keep the sockets on. No, which means that if there is a dangerous voltage on your 7 x 24 equipment, there will be a malfunction.

If you are looking for an air conditioner with Always On socket, we strongly recommend that you read our article on the Panamax MR5100.

Is the MR4300 worth the price?

Given the related functions of power management, air conditioning and surge protection, the price of just over $200 is justified in my opinion.


If you appreciate the sound and picture quality in home entertainment, the Panamax MR4300 is definitely a valuable asset for you to invest in. With a lifetime warranty and many enthusiastic reviews, the MR4300 is a serious contender for everything on your shopping list.


Panamax MR4300 FAQs

Why are there two isolated branches?

Insulated sockets can contribute to the sound insulation, so that the noise generated by the A/V component cannot contaminate the power supply of the equipment connected via another socket.

Do I need to use the Panamax MR4300 with network or security equipment that needs to be activated 24 hours a day?

The MR4300 interrupts the power supply to the connected devices in case of a dangerous voltage, which means that your 24 x 7 service is switched off.

What are the automatic closures for surge and undervoltage?

Switching at 142 VAC +- 8 VAC | Switching at 86 VAC +- 6 VAC undervoltage

What is the maximum filter capacity for an MR4300?

The filters are arranged as follows:

The maximum filtering for bench 1 is -80dB at 150kHz.

The maximum filtering for Bank 2 is -63 dB at 250 kHz.



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