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Panamax M5300-PM

Power line conditioner and surge protector

Item # 299M5300PM

The Panamax M5300-PM does more than just protect your audio/video system from harmful power spikes.

The Panamax M5300-PM does more than just protect your audio/video system from harmful power spikes.

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Item # 299M5300PM

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About the Panamax M5300-PM

Ralph Graves

Protect your equipment and improve its performance

The Panamax M5300-PM does more than just protect your audio/video system from harmful power spikes. It also smoothes out minor current fluctuations and effectively eliminates electronic interference, giving you clear, pristine picture and sound. The M5300-PM can safeguard up to 11 components, and it includes a protected front-panel USB jack for your MP3 player, cell phone or another portable electronic device.
Back of Panamax M5300-PM

The 10 rear-panel AC outlets are divided into 5 isolated banks, which helps prevent noise created by one component from affecting your other gear.

Protect your equipment and improve its performance

The Panamax M5300-PM does more than just protect your audio/video system from harmful power spikes. It also smoothes out minor current fluctuations and effectively eliminates electronic interference, giving you clear, pristine picture and sound. The M5300-PM can safeguard up to 11 components, and it includes a protected front-panel USB jack for your MP3 player, cell phone or another portable electronic device.

Clean power for high-performance audio/video gear

This power conditioner has ten AC outlets on its back panel, divided into five isolated banks to minimize cross-interference between your components. Two of the outlets accommodate high-current components, such as an amplifier and powered subwoofer. These switched outlets operate on a delay to prevent "speaker thump" when powering your system on and off. A front-panel digital voltmeter and ammeter let you closely monitor the AC power coming into your system.

Ethernet and coaxial RF protection

The M5300-PM also has two sets of protected Ethernet jacks, including one jack on the front panel, so you can surf the web without worry of power surges. A pair of protected telephone jacks prevents spikes from coming in through your phone line, while three sets of coaxial terminals shield your satellite, cable TV and antenna connections.


Product highlights:

  • 11 AC outlets with 5 isolated banks:
    • two isolated banks of two switched outlets
    • two isolated banks of two always-on outlets
    • one isolated bank of two switched high-current outlets with delayed on/off
    • one front-panel convenience outlet
  • front-panel USB charger
  • surge and over- and under-voltage protection
  • filtration circuitry virtually eliminates line noise
  • three sets of coaxial RF connections for cable/satellite/TV antenna
  • two sets of RJ-45 Ethernet line inputs and outputs, including one front-panel connection
  • RJ-11 phone line input and output
  • 12-volt trigger input for delayed outlets
  • front-panel digital voltmeter and ammeter
  • 2125-joule surge protection
  • maximum current rating: 15 amps
  • 17"W x 4-1/4"H x 14-1/4"D
  • warranty: 3 years
  • $5 million connected-equipment warranty (covers equipment that is damaged by an AC surge while connected to a properly installed Panamax surge protector if protector shows signs of surge damage or is operating outside of design specifications)
  • MFR # M5300-PM

What's in the box:

  • Surge suppressor/power line conditioner
  • 10' AC power cord (IEC C-13 plug)
  • 2 Rack mount brackets
  • 4 Machine screws
  • 4 Plastic washers
  • 42" coaxial cable
  • 48" Ethernet cable (has an RJ45 connector on each end)
  • 49" Telephone cable (has an RJ11 connector on each end)
  • Owner's Guide (English/Spanish/French)

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More details on the Panamax M5300-PM

Mark G.

Features & specs

Type Component
Total AC Outlets 11
Total Current Capacity 15
High-Current Outlets 2
USB Connections USB-A
Coaxial RF Jacks Yes
Line Conditioning Yes
Joule Rating 2125
Powerline Network Compatible No
Connected Equipment Guarantee $5,000,000
Width (inches) 17
Height (inches) 4-1/8
Depth (inches) 14-11/16
Weight (pounds) 14
Parts Warranty 3 Years
Labor Warranty 3 Years
The Panamax M5300-PM replaces these items:

Product Research

Controls And Indicators


11 AC Outlets: The Panamax M5300-PM features 1 front-panel "Always On" AC outlet, 4 rear-panel "Always On" Linear Filtered outlets divided into two separate banks, 4 rear-panel "Switched" Linear Filtered AC outlets also divided into two separate banks, and 2 rear-panel "Switched/Delayed High Current" AC outlets.

  • High Current Outlets: The unit's two High Current Outlets provide power from a low impedance noise filtration circuit that does not limit the current to your equipment. Its output is noise isolated from all of the other outlets.
  • Linear Noise Filtration Outlets (Switched): The unit's four switched Linear Noise Filtration Outlets are divided into two separate banks and are controlled by the front panel Power Button or the DC Trigger input. These outlets will turn on immediately and turn off after 10 seconds. LiFT EMI/RFI noise filtration is provided by a two-stage balanced Pi filter which also provides noise isolation from the other outlet banks.
  • Linear Noise Filtration Outlets (Always On): The units four "always on" Linear Noise Filtration Outlets are divided into two separate banks and will only power off during a fault condition (under-voltage/over-voltage). Power is cleaned from these outlets by a two-stage balanced Pi filter which also provides noise isolation from the other outlet banks.
  • Gaming Outlet: The M5300-PM features a convenient AC outlet located on the front-panel for connecting your gaming system temporarily.

Level 4 Power Cleaning And Filtration: Level 4 Power Cleaning and Filtration eliminates common symptoms of contaminated power (including loss of detail, pops, hisses, hums and visual artifacts) and allows your A/V equipment to perform up to its full capability.

Automatic/Visual Voltage Monitoring Circuitry: Panamax's patent pending AVM circuitry continuously monitors the incoming power as displayed on the unit's digital voltmeter. In case of an under-voltage or an over-voltage, a flashing red lightning bolt will be displayed in the voltmeter, and power to the connected equipment is automatically turned off if either of these conditions is detected. When voltage returns to a safe level, power to the equipment is automatically reconnected.

Cross-Contamination Reduction: The M5300-PM is designed to provide noise isolation between 5 isolated outlet banks (including 1 bank with 2 high current outlets) so that any noise created by an A/V component cannot contaminate the power going to equipment plugged into another outlet bank

Power Sequencing: The M5300-PM features Power Sequencing to guard against blown fuses and potential damaging speaker thump by automatically power outlets on and off in sequence. This feature minimizes in rush current issues by allowing the components plugged into the Switched Outlet Banks to power-up and stabilize before any amplifier and powered subwoofers are turned on. This sequence is reversed during shutdown. The amplifier and powered subwoofers turn off, their power supplies drain and then the equipment plugged into the Switched Outlet Banks are turned off.

Voltage Sense Trigger Input/Output: The M5300-PM voltage sense trigger input and output uses a standard 3.5mm (1/8") mini-mono plug. This feature provides an On/Off trigger for the M5300-PM using a direct current voltage signal. You can connect the DC Trigger Input to a remote trigger device that uses a DC output to trigger a start-up/shutdown sequence. The DC Trigger Output can be connected to a remote trigger device that uses a DC trigger input to pass the M5300-PM's startup/shutdown sequence to an additional device.

HD Ready Coax Jacks: The unit's bi-directional coaxial protection circuits achieve optimum signal quality from newly designed connectors that have less than 0.5 dB of attenuation from 0Hz to 2.2GHz. The unit's clamping level of 75V will meet the demands of both cable and satellite voltage while minimizing exposure to damaging spikes and surges.

Phone Jacks: The unit features an RJ-11 input and output for protecting your standard telephone or pay-per-view lines. The Phone circuit is auto-resetting.

LAN Jacks: The M5300-PM is equipped with two RJ-45 LAN inputs and one RJ-45 LAN output on it rear panel; and a bi-directional RJ-45 LAN jack on its front panel. The LAN protection circuits are designed for 1-/100 baseT Ethernet lines. The front-panel bi-directional LAN jack is an Ethernet pass-thru connection between the units front and rear panel. The front panel LAN port is also great for on-line gaming.

USB Charger: The M5300-PM features a front-panel USB type-A port for charging your MP3 player, cell phone, or other small electronics.

Digital Voltmeter: The M5300-PM features a front-panel Digital Voltmeter which monitors the voltage supplying your home theater equipment. If line voltage drops below 90VAC, or if the line voltage exceeds 142VAC, the display will turn off and the "unsafe voltage" indicator will flash indicating and unsafe voltage condition.

Digital Ammeter: The M5300-PM features a front-panel Digital Ammeter which shows the actual current draw (0-15A) of the connected components system, giving you a visual reference as to how your system is functioning under a variety of conditions.

Outlet Bank Power LEDs: Each bank of outlets features a corresponding Blue LED indicator. These LEDs indicate the status of the corresponding rear panel outlets. The LED will be lit when the outlets are turned On. They will flash during the startup and shutdown process.

Circuit Breaker: A circuit breaker is located on the back panel of the M5300-PM. The circuit breaker will trip only if the total current draw exceeds the maximum current rating (15A). This means that collectively, all outlets must draw more than 15 amps before the circuit breaker will trip.

Rack-Mount Brackets: The M5300-PM comes with rack-mount brackets to mount it in a 1U rack space.

$5,000,000 Lifetime Connected Equipment Warranty: Panamax will replace, pay to replace at fair market value, or pay to repair, up to $5,000,000 of equipment that is damaged by an AC surge while connected to a properly installed Panamax surge protector, if the surge protector shows signs of surge damage or is operating outside of design specifications. For coverage conditions and information on how to make a claim, please see the warranty sheet.

Controls And Indicators

Front Panel:

  • Power Button: Powers Bank 3, 4 and 5 outlets on and off.
  • Dimmer Button: Adjusts brightness level of unit's front panel lights and voltmeter.
  • Digital Voltmeter: Digital LED voltmeter indicates the incoming line voltage.
  • Digital Ammeter: The unit's Digital Ammeter shows the actual current draw (0-15A) of the connected component system.
  • Outlet Bank Power LEDs: Bank 1, Bank 2, Bank 3, Bank 4 and Bank 5 each have a corresponding LED indicator to indicate they are turned on.
  • Wiring OK: This LED illuminates to indicate that the wall outlet is properly grounded and Line/Neutral polarity is correct.

Rear Panel:

  • Circuit Breaker: Resets M5300-PM.
  • Bank 1 & 2 On LED: This LED illuminates when there is power present on the Bank 1 and 2 receptacles.


Front Panel:

  • AC Outlet: Front panel outlet for gaming systems.
  • USB: USB port for charging portable devices such as MP3 players or cell-phones.
  • LAN: Bi-directional Ethernet pass-thru connection between the front and rear panel.

Rear Panel:

  • Linear Filtration Always On Bank 1: always on linear filtered outlets labeled DVR and VCR/AUX.
  • Linear Filtration Always On Bank 2: always on linear filtered outlets labeled HDTV/Monitor and HD Cable SAT.
  • Linear Filtration Switched Bank 3: Two switched outlets with linear filtration controlled by the front panel Power button or the DC Trigger input labeled Digital Radio and Pre Amp.
  • Linear Filtration Switched Bank 4: Two switched outlets with linear filtration controlled by the front panel Power button or the DC Trigger input labeled CD and DVD.
  • High Current Switch Delayed Bank 5: Two switched, high current outlets controlled by the front panel power button or DC Trigger input labeled Receiver and Sub/Amp.
  • Voltage Sense Trigger Input: 3.5mm mono mini-plug which connects to a remote trigger device that uses a DC output to trigger a startup/shutdown sequence.
  • Voltage Sense Trigger Output: 3.5mm mini-plug output which allows the input signal to pass through the M5300-PM to control the start-up/shutdown of an additional device.
  • LAN Jacks: Two RJ-45 inputs and  RJ-45 output for 10/100 baseT Ethernet lines.
  • Phone Jacks: One RJ-11 input and one RJ-11 output for standard telephone lines.
  • Coaxial Jacks: 3 pairs of bidirectional threaded female F-type coax terminals
  • Ground Lug: Gold-plated binding post that provides a common grounding point for equipment with separate ground leads.


AC Power:

  • Line Voltage: 120VAC, 60Hz
  • Maximum Current Rating: 15A
  • UL 1449 Surge Suppression Rating: 330V
  • Protection Modes: L-N, L-G, N-G
  • Initial Clamping Level: 200V
  • Joule Rating: 2125 Joules
  • Peak Impulse Current: 72,000A
  • EMI/RFI Noise Filtration:
    • Banks 1, 2, 3, 4: 80dB, 100KHz-2MHz
    • Bank 5 (High Current): 60dB, 100KHz-2MHz
  • Over-voltage Shutoff Threshold: 142V (+/-8)
  • Under-voltage Shutoff Threshold: 90V (+/-2)

DC Trigger Input:

  • Jacks: 3.5mm (1/8") mono mini-plug
  • Voltage And Polarity: 3-24V DC, bidirectional
  • Current Requirement: 4.5mA @ 3V, 58mA @ 24V

DC Trigger Output:

  • Jacks: 3.5mm (1/8") mono mini-plug
  • Pass Through: no delay

LAN Protection:

  • Clamping Level: 52V
  • Connectors: RJ-45
  • Wires Protected: 8 wires

USB Circuit:

  • Jacks: USB-A
  • Power Delivery: 500mA @ 5VDC

Telephone Protection:

  • Clamping Level: 260V
  • Capacitance: approximately 30pf
  • Suppression Modes: metallic and longitudinal
  • Connections: RJ-11
  • Wires Protected: 2 wires (4&5)

Universal Cable and Satellite Protection:

  • Clamping Level: 75V
  • Insertion Loss: <0.5dB
  • Bandwidth: 0MHz - 2.2GHz
  • Connections: Gold-plated female F-type

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Customer Q&A

12 questions already asked

Can the Led display turn off?
thomas  Apr 28, 2023
1 answer
There is a dimmer button that adjusts the brightness level of unit's front panel lights and voltmeter, Thomas. There are four brightness settings available.
bo  Apr 28, 2023 (Staff)
I recently purchased one of these. It hums as soon as it gets plugged in without anything even hooked to it. Itâ??s supposed to hum or is it defective?
mike  Oct 23, 2021
7 answers
It should not hum, It may be defective, might be a ground issue. Check outlets in your home. If it still hums try bypassing ground plug.
frank  Oct 25, 2021
mine didnt hum. if its plugged into a grounded outlet and still hums i'd say its defective
marjorie  Oct 24, 2021
In my opinion, it shouldn't hum (mine doesn't). My advice: get Crutchfield to RMA it. S**t happens.
edward  Oct 23, 2021
Mine does not hum. The unit is supposed to eliminate any humming from any electronics that is plugged in to it. My uneducated guess is that something is wrong with it
jon  Oct 23, 2021
The unit must be defective. I've never had a hum out of mine and I had it for a year. It works great, protects against lightning strikes (especially in FL) and provides constant clean power all my components.
michael  Oct 23, 2021
I have this unit and have not noticed any loud humming noise.
christopher  Oct 23, 2021
Mine did not have the problem. It is working fine.
siew l.  Oct 23, 2021
Hi, I am researching and looking for a hi-end conditioner and surge protector for my high end system. Will the 5300 do the job? I have CJ MV50 amp, PV11 pre amp and a Lector CD player!!!! I want to have the best protection...
kevin  Aug 15, 2020
3 answers
I own two of these, and I have a total of 20 pieces of gear plugged into them, including a Marantz SR7012 AVR, an Emotiva 275w x 3 power amp, two UHD players, a DirecTV DVR, a Samsung 65" TV, a CD player, an Apple TV4K, several AC infinity fans, a Harmony remote hub, Definitive Technology speakers, etc., etc. These units have performed flawlessly; they are dead silent. I have not experienced any power surges or lightning strikes, but I am confident that the Panamax 5300s are solid pieces of gear.
michael  Aug 27, 2020
go with the 5400
richard  Aug 26, 2020
Yes I have a Marantz 5012 amp a sony 4k dvd an interga 6disk cd player 65 inch LG tv an sat receiver hooked up to it an no problem at all Frank aug 15th 1:30pm
frank  Aug 15, 2020
Can this unit be left on all the time?
john  Oct 23, 2018
11 answers
I always keep the unit on.
nimesh  Oct 24, 2018
I leave it on all the time to protect the system, no problems yet.
alfred collier  Oct 23, 2018
Sure, I never turn mine off....been on for about a year or so..
dennis  Oct 23, 2018
Yes, mine has been on since the day I installed it. The smaller one that it replaced had been left on for years.
michael  Oct 23, 2018
rodney  Oct 23, 2018
Yes it can
darrell  Oct 23, 2018
Yes, I haven't turned mine on since I installed it over a year ago.
herbert  Oct 23, 2018
I've left mine on 24/7 since buying it back in January. Just dim the blue lights otherwise it will light up your room pretty good!
michael  Oct 23, 2018
Yes this product can be on all day around u don't ever have to turn it off and it works amazingly would definitely recommend for u.
samuel  Oct 23, 2018
Yes. I've never turned mine off and I believe that's the only way you get protection around the clock.
kerry  Oct 23, 2018
bryan y  Oct 23, 2018
On the panamax 5300 pm , what is the coax in and protected out as there are a few to choose from and isn't clear in the pics ?
darren  Sep 02, 2018
1 answer
The coax connections are bi-directional so you can us either connector in each pair as the input or output. I hope that helps My bio:
ryan  Sep 10, 2018 (Staff)
I purchased a used model because I'm told it will work for a PA amp and associated equipment (sonic maximizer for example). The manual is short on information, what outlets on the unit should be used for live music and for what type of equipment? Thanks!
stuart  Apr 29, 2017
1 answer
The Panamax M5300-PM is typically recommended to protect home audio/video equipment--it *may* also work with your Professional Audio equipment, but you will want to contact one of our Pro Audio Advisors directly for more details. You can call them at 800.555.9369 or chat with them from our website:
david  May 04, 2017 (Staff)
How would a Turntable and grounding wire be connected?
eric  Mar 20, 2017
4 answers
If you are facing this unit on the right side and rear you will find a terminal marked GROUND LUG. It is also just below the units circuit breaker. On my system it is gold in color and has rough edges to make it easier to grab and to turn. Unscrew it just enough to place the turntable wire either under it or round the terminal post that is now exposed to you.
george  Mar 22, 2017
Perhaps I am misunderstanding the question, but here is how I view it. Often, the audio connection from turntable to pre-amp or phono amp includes a 3rd wire (in the case of an RCA type connection) to eliminate any ground loops. The power supplies of the turntable and pre-amp / phono amp may often terminate with a 3-prong style plug, containing a ground wire. The Panamax does not interfere with this arrangement, as far as I am aware. I do not believe that the audio out ground wire is to be connected to the Panamax directly.
louis  Mar 21, 2017
I am not really sure, I have had this thing for a while now. But I do love it, it does protect the audio equipment that I have.
donald  Mar 21, 2017
Plug in the turntable and attach the ground wire to the ground lug on the Panamax.
w ross  Mar 21, 2017
Will the USB port on this model charge a cell phone? I read a comment on a review that said; "no consistency across different models in regards to the front USB port. On my M4300-PM the USB port can charge a cell phone, on the M5300-PM although it looks like a standard USB it won't charge a phone, it's only for gaming consoles."
mythicparty  Jun 03, 2016
4 answers
I would be reluctant to plug a cell phone into this unit or any other unit that has not been supplied by the cell phone manufacturer. Apple recently tested several charges, that were made by other companies, that it found on the web for use with their cell phones. Some of these units did not comply with their cell phone electrical specifications.
george  Mar 22, 2017
Yes, it does. The USB port is on the front face of the unit and in fact it is labeled with a little battery icon. I have used this to charge my phone.
louis  Jun 04, 2016
I am not sure I never have tried it. But I don't see why it wouldn't work
donald  Jun 03, 2016
I have never tried a cell phone. Mine is in a rack unit and I use the usb to power a cooling fan. I have never had a problem with it, but if you are charging a phone compare the output of your charger with the output on the Panamax before trying.
kurtis  Jun 03, 2016
Is the noise filtration on the high current bank any less effective than the noise filtration on the other banks?
allen  Feb 23, 2016
2 answers
I bought this unit to replace a cheaper Panamax that I had that kept shutting my system down when the vacuum ran. This unit has solved that problem. Whether that is due to less bleed from different banks is hard to say, but the voltage does not drop near as much with this bigger unit. I have not experienced anything that would lead me to believe the noise filtration is any less on one bank over another. I have been very happy with my choice.
kurtis  Feb 26, 2016
It is different but not any less effective. They are isolated from the other banks so there's no noise or interference from your other components. I hope that helps! My Bio:
ryan  Feb 25, 2016 (Staff)
If you have no device plugged into bank #1, would you use that for your cable box instead of plugging the cable box into bank #2 which has your TV plugged in too?
john  Jul 28, 2015
2 answers
bank 1 x 2 are identical, the current draw for a cable box and a TV is minimal. each bank is rated at 15amps, no where near the component need. So my answer is this-it does not matter which you use
john  Jul 28, 2015
Yes, you can do that. However, all banks are pre-labeled for the type of hardware that should be plugged into them. I'm sure you're aware of that already. Each bank is rated for that type of hardware and hence the reason to have them labeled for that hardware. But, if you're limited on banks to use, you can plug into that bank.
ed  Jul 28, 2015
In which outlet should I plug a 60" plasma TV?
jazzman  Mar 20, 2015
8 answers
Bsnk 3-4 and up, as I would want to keep modem and router always on (bank 1-2)
alex  Mar 22, 2015
Have not set up yet
john  Mar 21, 2015
Bank 2 top outlet, it should be printed HDTV/Monitor.
john  Mar 21, 2015
HDTV Monitor is where I have plugged in my lcd.
lisa  Mar 21, 2015
If I could, I wanted to also let them know how much of a difference in sound quality the Panamax makes in my home theater speakers. I have a 5.1 surround set-up with Deftech Sats and a Center. I use 1 SVS 10" ported sub. I have listened to this set-up prior to purchasing my Panamax and the difference in sound quality was night and day once I ran all of my hardware through the Panamax. The whole sound stage brightened up after I set up the Panamax. I run an Onkyo 727, Oppo BDP-93, Sony 5 Disc CD Changer and my HD cable set top through the Panamax and they all perform nicely. I've had about 4 power failures due to outages in my neighborhood and the Panamax shuts down, then sequentially powers each bank back up as advertised. I have had zero issues with the unit and it is a literally a powerhouse. Great product!
ed  Mar 21, 2015
I can't remember exactly which bank it is, but all banks are identified as to which piece of hardware plugs into which bank. That's one of the nice things about this unit, it actually identifies the bank to plug into on the back. I have a Panasonic ZT60 and it performs very well through the Panamax. So, turn the Panamax around and you'll see all banks are labeled for the type hardware that should plug into them.
ed  Mar 21, 2015
I use one of the linear filter, always on outlets. I have a plasma TV and it is normally in a standby mode where it is drawing some power. You can also turn the switched outlet on all the time. You can then use these too.
robert  Mar 21, 2015
Into a ac outlet
mark  Mar 21, 2015

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Power line conditioner, surge protector, and voltage regulator
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