Lowrance Fish Finder X4 Pro: 5 Best Lowrance Models Compared (2026)

Updated November 2026

Anglers searching for a lowrance fish finder x4 pro usually want to know which sonar unit gives the best mix of screen size, imaging, charts and mounting flexibility for their boat. This guide compares five Lowrance-family and related portable options using a research-based method: manufacturer specifications, brand reputation for sonar performance, and patterns in owner feedback. The selection criteria were screen size and usability, sonar technology (CHIRP, sidescan and downscan), built-in charting, transducer compatibility, and how well each unit suits its intended waters, from small kayaks to offshore saltwater boats.

Our Top Picks

Quick Comparison

Product	Best for	Key feature
Lowrance HDS PRO 16 Fish Finder, No Transducer, C-MAP	Larger boats and offshore use	16-inch SolarMAX HD touchscreen with ActiveTarget 2 XL readiness
Lowrance HDS PRO 12 Fish Finder with Active Imaging HD 3-in-1	Best overall balance	12-inch screen with HD CHIRP, sidescan and downscan
Lowrance HDS PRO 10 Fish Finder with Active Imaging HD 3-in-1	Mid-size boats	10-inch screen with HD CHIRP, sidescan and downscan
Lowrance HDS PRO 9 Fish Finder with Active Imaging HD 3-in-1	Small boats and tight helm space	9-inch screen with preloaded C-MAP charts
Deeper PRO+ 2 Sonar Fish Finder	Kayaks, portable and ice fishing	Castable sonar with GPS and a companion app

Lowrance HDS PRO 12 Fish Finder with Active Imaging HD 3-in-1

Best for: Best overall balance of screen size, imaging and price-to-feature fit for most freshwater and inshore boats.

This is the model most anglers with a center console or bay boat will find easiest to read at a glance. The 12-inch display gives enough room to split views between sonar, chart and sidescan without crowding the image.

Key specs:

• 12-inch SolarMAX HD touchscreen
• HD CHIRP, sidescan and downscan imaging (Active Imaging HD 3-in-1)
• Preloaded C-MAP charts
• ActiveTarget 2 XL ready

Pros:

• Good screen size for split-screen use at the helm
• Sidescan and downscan cover both structure and fish targets
• Preloaded charts reduce setup time on the water

Cons:

• Larger than needed for very small boats or kayaks
• Full feature set takes some time to learn for beginners

Bottom line: Pick this if you want the strongest all-around Lowrance option for a mid-size boat and do not want to give up imaging.

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Lowrance HDS PRO 16 Fish Finder, No Transducer, C-MAP

Best for: Larger boats and offshore use where a big, easy-to-read screen matters most.

Anglers running larger boats, or those who want a large display for chart work and sonar, will benefit most. Because this listing does not include a transducer, plan to match one to your hull and fishing style before you buy.

Key specs:

• 16-inch SolarMAX HD touchscreen
• Preloaded C-MAP DISCOVER OnBoard charts
• ActiveTarget 2 XL ready

Pros:

• Large screen is easy to read in bright sun and at a distance
• Good fit for bigger helms with room to mount it
• Ready for ActiveTarget 2 XL live-imaging when paired with a compatible transducer

Cons:

• No transducer included, so an extra purchase is needed
• Too large for small boats and many kayak setups

Bottom line: Best for anglers with a larger boat who already have, or plan to buy, a matching transducer.

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Lowrance HDS PRO 10 Fish Finder with Active Imaging HD 3-in-1

Best for: Mid-size boats that need more screen than a 9-inch unit without the footprint of a 12-inch one.

This model suits anglers with a mid-size center console or aluminum fishing boat who want Active Imaging on a screen that still fits a standard dash.

Key specs:

• 10-inch SolarMAX HD touchscreen
• HD CHIRP, sidescan and downscan imaging
• Preloaded C-MAP charts
• ActiveTarget 2 XL ready

Pros:

• Good middle ground in screen size
• Full Active Imaging feature set
• Preloaded charts for quick use

Cons:

• Less room for side-by-side views than the 12-inch model
• Owners often report that the menu takes practice

Bottom line: A sensible choice for mid-size boats that want imaging without a very large display.

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Lowrance HDS PRO 9 Fish Finder with Active Imaging HD 3-in-1

Best for: Small boats and tight helm space where a compact unit still needs full imaging.

Smaller jon boats, bass boats and skiffs often lack room for a large display. This 9-inch model keeps the Active Imaging feature set in a footprint that fits on tighter dashes.

Key specs:

• 9-inch SolarMAX HD touchscreen
• HD CHIRP, sidescan and downscan imaging
• Preloaded C-MAP charts
• ActiveTarget 2 XL ready

Pros:

• Compact size suits small boats
• Includes sidescan and downscan imaging
• Preloaded charts reduce setup time

Cons:

• Smaller screen can be harder to read with two windows open
• Limited room for additional split views

Bottom line: The right pick for small boats where space and budget both matter, as long as you accept a tighter display.

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Deeper PRO+ 2 Sonar Fish Finder – Portable Fish Finder and Depth Finder For Kayaks, Boats and Ice Fishing with GPS Enabled

Best for: Kayaks, portable use and ice fishing where a castable unit beats a fixed-mount display.

This is a different category from the Lowrance HDS units. It is a castable, phone-linked sonar for anglers who fish from kayaks, shore or ice and need a lightweight, portable option.

Key specs:

• Castable portable sonar with GPS enabled
• Works with a free companion app

Pros:

• Light and portable for kayaks and shore fishing
• Works for ice fishing as well as open water
• Companion app keeps the setup simple

Cons:

• Not a substitute for a fixed Lowrance chartplotter on larger boats
• Screen and imaging depth are limited compared with HDS units

Bottom line: Choose this for kayak, shore or ice use rather than a permanent boat install.

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Buying Guide

Screen size and helm fit

Measure the space on your dash before you compare models. A 9-inch screen suits small boats, while 12 inches or more is easier to read for split-screen views. Check the bezel dimensions in the manufacturer specifications, not just the diagonal size.

Good picks for this: Lowrance HDS PRO 9 Fish Finder with Active Imaging HD 3-in-1, Lowrance HDS PRO 12 Fish Finder with Active Imaging HD 3-in-1

Sonar and imaging technology

Look for CHIRP sonar, sidescan and downscan imaging if you fish structure and suspended fish. Active Imaging HD combines these in one unit, which many owners report makes finding fish quicker than using standard sonar alone.

Good picks for this: Lowrance HDS PRO 10 Fish Finder with Active Imaging HD 3-in-1, Lowrance HDS PRO 12 Fish Finder with Active Imaging HD 3-in-1

Built-in charts and GPS

Preloaded charts save setup time and help when you are learning new water. Check whether the chart coverage matches your home waters, and whether you can add or update charts later.

Good picks for this: Lowrance HDS PRO 16 Fish Finder, No Transducer, C-MAP, Lowrance HDS PRO 9 Fish Finder with Active Imaging HD 3-in-1

Transducer compatibility

Transducers matter as much as the display. Confirm which transducers are compatible with your chosen model, especially if the unit ships without one. Matching the transducer to your hull type and water depth is often more important than screen size.

Good picks for this: Lowrance HDS PRO 16 Fish Finder, No Transducer, C-MAP, Deeper PRO+ 2 Sonar Fish Finder

Use case and boat type

A unit for a bay boat is not the same as one for a kayak. Decide whether the fish finder will be fixed to a hull, moved between boats, or used from shore or ice. Portable units trade screen size and imaging depth for flexibility.

Good picks for this: Deeper PRO+ 2 Sonar Fish Finder, Lowrance HDS PRO 10 Fish Finder with Active Imaging HD 3-in-1

Durability and sunlight readability

Marine displays need to handle spray, UV exposure and vibration. SolarMAX-type screens are designed for daylight readability, and manufacturers generally specify water-resistance ratings you should check. Mount the unit so it is not exposed to direct spray where possible.

Good picks for this: Lowrance HDS PRO 12 Fish Finder with Active Imaging HD 3-in-1, Lowrance HDS PRO 16 Fish Finder, No Transducer, C-MAP

Care and setup

Plan on a clean installation with proper power wiring and a fused circuit. Keep software updated, clean the screen with a soft cloth, and store portable units out of direct sun when not in use. Consult a marine electrician for hardwired installs.

Good picks for this: Lowrance HDS PRO 9 Fish Finder with Active Imaging HD 3-in-1, Deeper PRO+ 2 Sonar Fish Finder

FAQ

Is the lowrance fish finder x4 pro a real model I can compare with these units?

The model name is often used by shoppers, but for this comparison we focus on the Lowrance HDS PRO line and one portable alternative, since those are the models with the clearest specifications. Check the exact model name on the box before buying.

Do I need a transducer with a Lowrance HDS PRO unit?

Some listings include a transducer and some do not. The HDS PRO 16 listed here does not include one, so check the package contents and compatible transducer list before you buy.

What is the difference between CHIRP, sidescan and downscan?

CHIRP sonar uses a range of frequencies for clearer target separation. Sidescan shows the bottom and structure to each side of the boat, and downscan shows what is directly below. Together they help locate fish and cover.

Which screen size is best for a small boat?

A 9-inch display usually fits small boats and tight dashes. Larger screens are easier to read but need more mounting space, so measure before you buy.

Can a portable fish finder replace a fixed unit?

For kayaks, shore fishing and ice fishing, a portable unit like the Deeper PRO+ 2 can be a practical choice. On larger boats, a fixed chartplotter with imaging usually gives more screen space and depth coverage.

How should I mount a fish finder on a boat?

Mount it where you can see the screen from the helm and away from direct spray. Follow the manufacturer’s mounting instructions, and consult a marine professional for wiring or transom installs.

Conclusion

For most anglers comparing a lowrance fish finder x4 pro style unit, the Lowrance HDS PRO 12 offers the best balance of screen size, Active Imaging and usability. Choose the HDS PRO 16 for larger boats and offshore use if you can source a compatible transducer, the HDS PRO 10 for mid-size boats, and the HDS PRO 9 when space is tight. The Deeper PRO+ 2 suits kayak, shore and ice fishing where portability matters more than a fixed display.

Sources

• Boating safety guidance, including electrical and equipment standards for recreational vessels (uscg.mil)
• Charting and nautical data resources for coastal and offshore navigation (noaa.gov)
• Fishing regulations and habitat information for U.S. waters (fws.gov)

Related reading

• Lowrance HDS 12 Fish Finder: 6 Best Models Compared for 2026
• Lowrance Fish Finder Hook 4x: Setup, Settings and Buying Tips (2026)
• Lowrance Elite FS 9 Fish Finder Review: Key Features Explained

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