Skip to main content
Panamax MR4300 MR4300 9-Outlet Home Theater Power Management with Surge Protection and Power Conditioning
Panamax

Panamax MR4300 MR4300 9-Outlet Home Theater Power Management with Surge Protection and Power Conditioning

Bottom line: The Panamax MR4300 MR4300 9-Outlet Home Theater Power Management: 9 protected outlets, split into 2 isolated filtered banks plus 2 high-current outlets; main trade-off: joule rating and clamping voltage are not listed in the product details.

Live pricing on eBay

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

🛒 See live eBay price Also on Amazon — Check price → Compare to similar power protection

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 9 protected outlets, split into 2 isolated filtered banks plus 2 high-current outlets
  • ✓ AVM Protect or Disconnect cuts power during surges and sustained voltage swings
  • ✓ Level 3 Noise Filtration aimed at cleaner picture and sound from AV sources
  • ✓ Coax, RJ-45 Ethernet and RJ-11 phone surge protection built in

Cons

  • ✗ Joule rating and clamping voltage are not listed in the product details
  • ✗ No battery backup, so it will not keep gear running through a power outage
  • ✗ AVM disconnect shuts off all connected gear, which can interrupt playback or recordings
  • ✗ Only one RJ-45 pair, so it protects just one Ethernet line

Manufacturer description

Your home theater gear is only as clean as the power feeding it. The Panamax MR4300 is a 9-outlet power management unit built for AV systems, combining surge protection with Panamax Level 3 Noise Filtration to guard your TV, receiver, and source components. The key feature is Panamax's patented Automatic Voltage Monitoring (AVM). It continuously watches incoming line voltage, and its Protect or Disconnect circuitry cuts power to your equipment when dangerous surges, spikes, or sustained voltage swings hit, then restores it once the line is safe. Filtering is split into 2 isolated…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored Panamax MR4300 MR4300 9-Outlet Home Theater Power Management using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. Panamax's power protection lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How many outlets does the Panamax MR4300 have?

It has 9 protected and filtered outlets: 2 isolated linear-filtered banks for sensitive AV sources and 2 high-current outlets for amplifiers or powered subwoofers.

What does Automatic Voltage Monitoring (AVM) do?

AVM continuously monitors incoming line voltage. When it detects surges, spikes, or unsafe voltage levels, the Protect or Disconnect circuit cuts power to connected gear and restores it once the voltage is back in a safe range.

Does the MR4300 protect cable, Ethernet, and phone lines?

Yes. It includes 2 pairs of universal CATV/satellite coax connectors, 1 pair of RJ-45 Ethernet jacks, and 1 pair of RJ-11 phone jacks for in/out surge protection.

What warranty comes with the Panamax MR4300?

Panamax provides a Lifetime Product Warranty and a Limited Lifetime Connected Equipment Protection Policy. Check Panamax's policy terms for claim requirements and coverage limits.

Is the MR4300 a battery backup or UPS?

No. The product listing describes surge protection, voltage monitoring, and noise filtration, with no battery backup. Your equipment will lose power during an outage, so pair it with a UPS if you need runtime.

Key Features

  • 9 protected and filtered outlets featuring exclusive Automatic Voltage Monitoring (AVM), Protect or Disconnect technology and Panamax Level 3 Noise Filtration.
  • Industries best protection - specifically designed and engineered to provide protected and filtered power to home theater systems.
  • Guards against damaging power spikes and current fluctuations that can harm your AV system components and impact performance.
  • $5,000,000 Limited Lifetime Connected Equipment Protection Policy; Lifetime Product Warranty
  • With over 30 years of innovation, millions of units sold, multiple patents granted and numerous industry awards, Panamax is the recognized leader in AV equipment protection.

Full Specifications

BrandPanamax
ColorBlack
Voltage120 Volts
Plug TypeType B
Unit Count1.0 Count
Model NumberMR4300
Mfr Part NumberMR4300
Number of Ports9
Power Plug TypeType B - 3 pin (North American)
Special FeatureSurge Protection, Usb Slot, Durable
Number of Outlets9
Compatible DevicesMonitor
Enclosure MaterialCopper, Plastic
Total Power Outlets9
Warranty Description1 year
Smart Home CompatibilityNot Smart Home Compatible
Global Trade Identification Number50050616008933
Other Special Features of the ProductSurge Protection, Usb Slot, Durable

Ready to buy?

Panamax MR4300 MR4300 9-Outlet Home Theater Power Management with Surge Protection and Power Conditioning is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

See live eBay listings → Check Amazon listing →

Related Power Protection

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
Panamax MR4300 MR4300 9-Outlet Home Theater Power Management with Surge Protection and Power Conditioning
View on eBay →