Humminbird PiranhaMAX 4 DI – 4.3" Fish Finder with Down Imaging and Dual Beam Sonar

Humminbird PiranhaMAX 4 DI is the next step in the PiranhaMAX series, delivering Down Imaging technology at an affordable price for anglers who want a clearer "X-ray" view beneath the boat. This version of the unit includes an additional Down Imaging element in its transducer, which operates at 455 kHz to draw a thin, detailed picture of everything directly below your boat – fish, bottom terrain, submerged branches or structure all appear on the screen with photo-like clarity.

In addition to Down Imaging, the PiranhaMAX 4 DI still provides the traditional dual-beam 2D sonar to give you a complete view. The Dual Beam PLUS sonar here covers 200 kHz (wide beam ~28°) for general searching and 455 kHz (narrow beam ~16°) for more detailed information – note that this 455 kHz for 2D is separate from the Down Imaging beam, but the unit intelligently combines the information. The maximum depth you can expect is similar to the base model – roughly 320 ft for 2D sonar, while Down Imaging is most effective in shallower waters (up to ~200 ft) where it provides the best detail.

For the user, the interface remains just as straightforward as the standard PiranhaMAX 4. You can choose to display only 2D sonar, only Down Imaging, or a split view of both. The Fish ID+ feature is included in this model as well, so if needed you can switch the traditional arches into fish icons. Audible alarms for fish and shallow water are present and are easily adjustable from the menu.

Installing the PiranhaMAX 4 DI is the same as others in the series – the compact transducer mounts on the transom, and the head unit on the console or a rail using the convenient bracket. Despite the added capabilities, the power draw remains minimal and the unit continues to be suitable for small batteries or extended use. Anglers who have used the basic model will find the DI variant a logical extension – they get extra information that can help differentiate, for example, fish from structure (Down Imaging will clearly show if that "fish" is actually a clump of weeds or a tree limb).

The Humminbird PiranhaMAX 4 DI upholds the series’ reputation for affordability and ease of use, while adding another tool to your underwater observation arsenal. If you're looking to step up from a basic fish finder and gain a clearer understanding of what's happening directly beneath you, without jumping to significantly higher-priced units, this fish finder is an excellent middle-ground choice.

• Recommended for anglers who want more detail than the base PiranhaMAX model – Down Imaging helps differentiate fish from structure
• Great for fishing in lakes with lots of underwater vegetation or rocks – you get a clearer picture to pinpoint where fish are hiding
• Suitable for small boats and kayaks, bringing a pro-level technology (DI) into a beginner-friendly unit – easily portable and power-efficient
• Good choice for those who fish near the bottom or around structures (submerged trees, docks) – Down Imaging will depict these clearly, making positioning easier