Humminbird PiranhaMAX 4 Review

If you are wondering why you are not getting the expected fish to bite your angler, the reason might be you haven’t met the best fish finder yet! The fish finder is a handy device that makes your job easy and helps you to locate the targeted fish. But choosing the best one is always difficult.

Here, we have done in-depth research on this issue and from data and firsthand experience, found Humminbird PiranhaMAX 4 as the best fish finder to have.

Humminbird PiranhaMAX 4 Review


  • Depth capability: 600 feet
  • Transducer: XNT 9 28 T transom mount, built-in temperature sensor
  • Operating frequency: 200/455 kHz
  • Screen: 272H x 480V resolution, 4.3 inch color TFT with 256 colour range, LED-backlit
  • Sonar Coverage: DualBeam, 28 / 16 degrees
  • Maps: UniMap
Humminbird PiranhaMAX 4 Review

Keep reading this article for Humminbird Piranhamax 4 review in detail! A little investment in this top-notch device is always worth it if you love to catch fish year-round.


Humminbird Piranhamax 4 comes with the XNT 9 28 T transducer. A transducer is the core of a fish finder that changes the electrical pulses into sound waves and sends them back and again receives the echoes. Its Transom Mount is popular for its versatility. You can use it on wood, aluminum, fiberglass, or steel hulls with its single or dual beam.


Sonar is the short form of Sound Navigation and Ranging. With Sonar technology you can detect and determine the distance and direction of underwater objects.

Humminbird Piranhamax 4 has Dual Beam Sonar that helps to see the water by using sound waves. With the narrow beam, you can have great detail of the underwater object and with the wide beam, you can have an excellent coverage area that will help you identify the fish and its structure. Depending on strength this product offers 3 colors reading where blue means weakest, yellow is strong, and red is the strongest. Understanding the Sonar may need a little practice but once you are a pro at it, you will love it as your sea language.


Perfect navigation is the key to fishing. Though it is a budgeted model, still Piranhamax 4 is fantastic in detecting depth and fish with its outstanding navigation system and optional Down Imaging. The combination of Sonar technology along with live-mapping features makes it a true game-changer.

Display and Resolution:

No one would love a hazy and foggy picture despite having a fish finder. Piranhamax 4 offers you a 16° wide, 455 kHz cone and a 28° wide, 200 kHz cone for clear imaging. With a modern style, its 4.3″ color LCD provides you with a sharper image and gives you a clear perspective of what’s below your boat. If you are a kayak lover this 4.3 inches wide display is just perfect for you.

Portability and Weight:

As a bohemian traveler, I prefer my gadget to be lightweight. Piranhamax 4 is a small lightweight model that is an ideal fish finder for small boats and Kayaking. One of the amazing facts about this model is that it is very easy to use and carry. It will fit in your small bag pack and you can adjust the position of the display screen in any direction.

Battery Life:

Humminbird continuously improves the quality of life and the performance of their finders while keeping the price affordable, and the PiranhaMAX 4 is no exception. This simple model is reviewed as one of the most durable fish finders even in rough weather.


Despite being a budgeted model Piranhamax 4 provides top-notch performances in terms of accuracy and efficiency. With color LED-backlighting, it’s very easy to understand that’s why many anglers prefer this model to others.

Other Specifications:

I think Noone wants to miss any opportunity to grab a fish when they are on the water. But being a human being it’s not always possible to be alert to notice a fish. For you, this little device comes with three alarms. The first alarm is the Fish Alarm which will give you a single when the system finds any fish. The most interesting part is you can adjust fish size as your requirements for the alarm to ringing like small, medium, or large.

So, if you only want to catch giant fish, you can select it on large and the rest will be taken care of by your little friend! The second alarm is the Depth Alarm which will make the sound when the sonar touches a specific depth. Last but not least alarm is exactly what we all look for when we plan to spend a long day out fishing: Battery Alarm will inform us when we’ve to rejuvenate the fish finder!

Humminbird PiranhaMAX 4 Review

Pros And Cons


  • Very easy-to-use and easy-understanding technology
  • Sharp and Clear image
  • 4.3″ large color LCD display
  • High accuracy in SONAR reading
  • Light-weight and easy to carry
  • Perfect for the solo angler and small boat
  • One of the lowest-priced models
  • 1-year warranty


  • Not suitable for big boats and professional use in a large setup.

Difference between Piranhamax 4, DI, and PT:

You might be interested to recheck the distinguishing features of the other model of the Piranhamax series. To make your purchase decision more convenient we have made a comparison of the other model with Piranhamax 4.

Model Name Piranhamax 4 Piranhamax 4 DI Piranhamax 4 PT
Max depth Max Depth is 600ft Max Depth is 320ft (DI) Max Depth is 600ft
Transducer XNT 9 28 T Transducer is used XNT 9 DI T XNT 9 28 T with portable mounting kit
Mounting style Transom Mount Tilt and Swivel Mount: Tilt and Swivel Mount:
Warranty 1-year warranty (limited) 1-year warranty (limited) 1-year warranty (limited)
SONAR coverage Sonar Coverage is 28° & 16° @ -10dB Sonar coverage is 28°, 16°, & 74° @ -10dB Sonar coverage is 28° & 16° @ -10dB
Affordability Most affordable one Slightly more expensive than piranhamax4 Most expensive one in the series
Does it include a portable carrier (case) and a wall charger? NO NO Yes
Type of waterproofing IPX7 (The light is waterproof for 30 minutes when it is submerged in the water at a depth of one meter) IPX7 (The light is waterproof for 30 minutes when it is submerged in the water at a depth of one meter) IPX7 (The light is waterproof for 30 minutes when it is submerged in the water at a depth of one meter)
Does it have a down imaging option? NO YES NO
Are Batteries Included in the package? NO NO NO
Type of Map North America North America North America


Humminbird is a well-known fish finder brand for manufacturing tailor-made fish finders for different purposes. Their Piranha series offers competitive prices with top-notch quality and the PiranhaMAX 4 is no exception in this case. If you love something simple and easy to use this model is just ideal for you. All you need to do is set it in your boat and focus on fishing! So, what are you waiting for?

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