Humminbird PiranhaMax 4 DI Review

Humminbird PiranhaMax 4 - Review Post
5/5 - (1 vote)

Humminbird Piranhamax 4 DI Review: Looking for a great fish finder that won’t break the bank? The Piranhamax 4 DI is an excellent option. This unit is packed with features, and it’s priced reasonably.

It’s no secret that fishermen are a passionate bunch. And when it comes to finding the best fish finder or another fishing gear, they’re not afraid to share their honest opinions.

That’s why we were excited to hear what some of our angler friends had to say about the Humminbird Piranhamax 4 DI.

According to them, this fish finder is a real game-changer. Keep reading to learn more about this innovative product and find out if it’s right for you.

Introducing the Humminbird Piranhamax 4 DI

Humminbird Piranhamax 4

Humminbird Piranhamax 4

Key Specs:

  • Brand Name: Humminbird
  • Type: Down Imaging
  • Sonar: Dual Beam & Down Imaging
  • Transducer: XNT 9 DI T
  • Display: 4.3-inch 256-color TFT display
  • Dimensions: 3.6 x 3.9 x 6.8 inches
  • Weight: 2.0 lbs
  • Depth Capability: Down Imaging = 320 feet – 2D = 600 feet.
  • Frequency: 2D = 200 and 455 kHz – Di = 455 kHz.
  • Power OutPut: Peak-to-peak – 2400W; RMS – 300W.
  • Power InPut: 10.8 – 20 VDC.
  • Waterproofed: IPX7
  • Transducer Mount Type: Transom Mount or Trolling Motor Mount

The Humminbird Piranhamax 4 DI is a must-have for any angler who wants the latest technology in a great-looking mount that’s easy to install. With the PiranhaMax 4 DI, you can now enjoy all of these features in one powerful package.

Use Down Imaging technology to get a clear view of what’s happening beneath the water surface or use Wide Beam for great detail when targeting structures and contours that are below the waterline.

With its unique styling and larger 4.3″ color LCD, the Piranhamax 4 DI has everything you need to keep your boat running smoothly. If you’re serious about catching fish and have a low budget, then look no further than Humminbird PiranhaMax 4!

With an innovative design that provides superior viewing angles, it’s designed with all of today’s most popular boats in mind.

It even features built-in Bluetooth connectivity so you can use your phone or tablet while on the water!

Our Video Review:

Advantages and Disadvantages PiranhaMax 4Di:


  • Comes with dual-beam sonar.
  • Include down imaging.
  • Simple to use.
  • Affordable.
  • Sonar capacity up to 600 feet.
  • Portable and long-lasting.
  • Lightweight and easy to install on a kayak or boat.


  • Does not include dual beam plus.
  • Does not include a unit cover.

Detailed Features of Humminbird PiranhaMax 4 DI


The display of the Piranhamax 4 DI is a 4.3-inch 256-color TFT display. The unit comes with an LED backlight that makes it possible to use the unit during the daytime or nighttime. The screen is also polarized and has an adjustable viewing angle so you can customize your view.

There is no touchscreen on the unit, but all of the buttons you need to control the unit are located on the front of the display. And it does not feature any split-screen function.

Sonar & Transducer

The Piranhamax 4 DI uses a dual-beam sonar with two beams: a wide beam and a narrow beam. The wide beam gives you a generous coverage area that is perfect for finding fish, while the narrow beam provides great detail when targeting structures and contours beneath the waterline.

The sonar device is a marvel of technological innovation. It has two beams, which are each made up of 200 kHz and 455 kHz frequency sounds with conical angles at 28° or 16 ° respectively- this allows for exceptional coverage when scanning underwater structures but it can only use one beam at a time!

The Di sonar is a specialized device for identifying underwater structures and differentiating between vegetation.

It features the CHIRP tech, which enables it to produce very thin beams that can go deeper into the water than other models with similar size or power output without producing excess noise interference from high-frequency signals like LOAs (Low-Oscillation Frequency).

With 2.5-inch target separation rates on both 455 kHz channels combined; there are plenty of opportunities when fishing around 50kHz but not if you’re using PiranhaMAX 4 dl because its narrow beam angle of 75 degrees won’t allow them in, limiting reach even further while still being effective at what they do that is essential for small, tight spots.

The transducer also includes a built-in temperature sensor that displays the water’s temperature on the display. This is a helpful feature if you are trying to determine what type of fish you are catching.


The DI has a transom mount/trolling motor mount transducer that lets you quickly adjust the viewing area angle. This is perfect for when you want to view the sonar from different angles or positions on your boat.

Down Imaging (DI)

The unit also uses Down Imaging technology, which gives you a clear view of what’s happening below the water’s surface. This is a great feature for seeing fish and identifying structures in murky water.


The Humminbird’s new PiranhaMAX 4 Di does not offer any traditional connectivity options. In other words, it lacks NMEA ports and Ethernet capabilities or microSD card readers which are common features in many sonars today.

I was really disappointed when I found out that this model doesn’t come with either of those two things-a network connections so you can get data remotely via your phone app as some higher-end models do.


The PiranhaMax 4 DI weighs just 2.0 lbs and its compact size makes it perfect for portability. It also comes with a swivel power cord, so you can use the sonar in different areas of your boat without having to unplug everything.


The Humminbird Piranhamax 4 DI is built with a transom mount or trolling motor mount that lets you quickly adjust your viewing angle to whatever you need it to be, making it easier to use in a wider variety of boats.

The Piranhamax 4 DI also features a portable design that is lightweight and easy to install on any kayak or boat.

Best settings for Humminbird PiranhaMAX 4 DI

The PiranhaMAX 4 DI is a great fish finder that can be customized to fit your needs. The following are the best settings for the Humminbird PiranhaMAX 4 DI:

  • Depth range: The PiranhaMAX 4 DI has a depth range of 1-1,500 feet. This can be adjusted to suit your needs.
  • Sensitivity: The PiranhaMAX 4 DI has a sensitivity of 50-240. This can be adjusted to suit the conditions you are fishing in.
  • Display contrast: The PiranhaMAX 4 DI has a display contrast of 1-99.
  • Unit of measure: The PiranhaMAX 4 DI can be set to display in feet, fathoms, or meters.
  • Language: The PiranhaMAX 4 DI can be set to display in English, French, or Spanish.
  • Backlight: The PiranhaMAX 4 DI has a backlight that can be turned on or off.

These are the best settings for the Humminbird PiranhaMAX 4 DI. These settings can be customized to fit your needs.


Does the Humminbird PiranhaMAX 4 have Down Imaging?

Yes, the Humminbird Piranhax 4 has Down Imaging technology to help you see what’s going on below the water’s surface.

What are the tilt and swivel mounts?

The tilt and swivel mount is a feature that lets you quickly adjust the viewing angle of the unit, making it easier to use in a wider variety of boats.

What is Down Imaging?

Down Imaging technology gives you a clear view of what’s happening below the water surface, helping you see fish and identify structures in murky water.

Does the Humminbird PiranhaMAX 4 DI have GPS?

No, the Humminbird PiranhaMAX 4 DI does not have any GPS option.

How is the Humminbird Piranhamax 4 DI different from other fish finders?

The Humminbird Piranhamax 4 DI is different from other fish finders because it includes various features like Down Imaging technology, Dual Beam Sonar, Tilt and Swivel Mount, etc. And it’s also budget-friendly.

Does the Humminbird PiranhaMAX 4 DI come with a transducer?

Yes, The Humminbird PiranhaMAX 4 DI comes with an XNT 9 di T transducer.

Is the PiranhaMAX 4 waterproof?

The Humminbird PiranhaMAX 4 DI is water-resistant, meaning it can withstand light rain and snow. It is not, however, waterproof and should not be submerged in water.

Final Verdict:

The Humminbird Piranhamax 4 DI is a great choice for anglers who want an affordable, easy-to-use fishfinder with Down Imaging technology. This unit is perfect for kayaks and smaller boats, and it’s portable enough to take with you wherever you go.

So, if you’re looking for a new fish finder that will help you take your fishing game to the next level, the Humminbird Piranhamax 4 DI is worth checking out!


  1. Hi Gary!

    I understand that you’re having trouble with your Piranha Max 4DI not displaying any fish, and you’re looking for instructions on how to troubleshoot the issue. I’d be happy to help!

    When your fish finder is not showing any fish, there could be a few reasons behind it. Let’s go through some troubleshooting steps to try and resolve the problem:

    Check the transducer placement: Ensure that your transducer is installed correctly and positioned in an appropriate location on your boat. It should be submerged in the water and free from any obstructions or interference that could affect its performance.

    Adjust the sensitivity: Your Piranha Max 4DI might have a sensitivity setting that determines how it interprets sonar signals. Try adjusting the sensitivity level to see if it makes a difference. Setting it too high can lead to false readings, while setting it too low may cause you to miss fish.

    Verify the depth range: Make sure that the depth range setting on your fish finder is suitable for the area you’re fishing in. If the depth range is set too shallow or too deep, it may not detect fish accurately.

    Look for fish in the right areas: Keep in mind that fish tend to gather in certain locations, such as near underwater structures, drop-offs, or vegetation. Experiment with different areas and depths to increase your chances of finding fish.

    Update software or firmware: Check if there are any software or firmware updates available for your Piranha Max 4DI unit. Sometimes, updating the device can address performance issues and improve its functionality.

    Regarding finding instructions for your unit, the best source of information would be the user manual that came with your fish finder. It typically provides detailed instructions on installation, operation, and troubleshooting specific to your model. If you can’t locate the manual, you can try searching for it online using the model name and number.

    Additionally, you can reach out to the manufacturer’s customer support for further assistance. They should be able to provide you with guidance on troubleshooting steps or direct you to any available resources.

    I hope these suggestions help you get your fish finder up and running effectively. Happy fishing, and if you have any more questions, feel free to ask!

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