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Imagine gliding across deep offshore waters, spotting schools of trophy fish and pinpointing structure with razor-sharp precision. The premium sonar module delivers exactly that, serving as a powerful remote network add-on for serious anglers chasing big game. By integrating high-output dual-channel sonar alongside sweeping scanning capabilities, it paints a vivid picture of what's lurking below—even at extreme depths. This isn't basic echo sounding; it's a game-changer for discerning individual fish amid tight packs, helping you drop lines right where they bite.
What sets this module apart is its ability to blend traditional sonar prowess with innovative scanning views. You'll see bottom contours, wrecks, and bait balls in stunning detail, making every trip more productive and less guesswork.
At its core lies dual-channel 1kW CHIRP technology—a step beyond conventional sonar. CHIRP, or Compressed High-Intensity Radiated Pulse, sweeps across a broad frequency range in a single transmission. This results in exceptional target separation, where small fish stand out from larger ones, and closely grouped targets don't blur into noise. Tune it for low/medium, low/high, or medium/high ranges to match conditions, whether probing shallow reefs or plunging to 5,000 feet in open ocean.
Pairing CHIRP with ClearVü (downward scanning) and SideVü (sideways scanning) creates photo-like images of fish arches, ledges, and suspended bait. These views extend hundreds of feet to each side and straight down, revealing hidden hotspots traditional sonar might miss. A single compatible transducer handles all modes, simplifying your setup while maximizing coverage. Anglers report easier navigation around drop-offs and quicker hookups during drifts.
For sportfishermen targeting pelagics like tuna, billfish, or snapper, this module shines in demanding scenarios. Its robust power punches through thermoclines and murky water, maintaining clarity where lesser units fade. Network it seamlessly with multifunction displays for split-screen views—traditional sonar on one side, scanning on the other. Users rave about spotting bottom-huggers near wrecks or marking wrecks teeming with life, turning exploratory outings into limit-filling hauls.
Built tough for marine life, the polycarbonate housing withstands harsh elements with an IPX7 waterproof rating, operating reliably from chilly 5°F mornings to sweltering 158°F afternoons. Compact dimensions slip into tight console spaces without hassle.
| Specification | Details |
|---|---|
| Dimensions | 9.9" L x 7.6" W x 2.6" D |
| Transmit Power | 1kW |
| Frequency Support | Traditional: 50/200, 77/200, 83/200 kHz; CHIRP: 40-250 kHz (single/dual); SideVü/ClearVü: CHIRP 260/455/800 kHz |
| Max Depth | 5,000 feet |
| Input Voltage | 10-35 VDC |
| Operating Temperature | 5°F to 158°F |
| Waterproof Rating | IPX7 |
| Material | Polycarbonate |
| Connections | 8-pin and 12-pin transducer ports; Garmin Marine Network |
Kit includes right-angle power and network cables (6 ft each), plus mounting hardware for straightforward integration.
Connect via the Garmin Marine Network to compatible chartplotters, powering up a suite of sonar views without cluttering your helm. Opt for Garmin marine transducers optimized for these frequencies to unlock full potential—ensuring crisp HD-ID echoes alongside scanning sweeps. Power draw stays efficient at 27W max, fitting most onboard systems.
CHIRP transmits across a range of frequencies simultaneously, delivering superior resolution and target separation. This means clearer images of individual fish and structure, even in challenging depths.
It reaches up to 5,000 feet, ideal for deep-water offshore fishing where big game hides.
Yes, with CHIRP ClearVü for downward views and SideVü for sideways scans, providing comprehensive coverage using one transducer.
Absolutely—its IPX7 waterproof rating and wide temperature range handle harsh marine conditions with ease.
Garmin-designed transducers supporting 8-pin or 12-pin connections and the specified frequencies maximize performance across all sonar modes.
Yes, dual-channel CHIRP lets you select low/medium, low/high, or medium/high pairings to optimize for your fishing style and water conditions.
Right-angle power and network cables (6 feet), mounting hardware, and documentation get you up and running quickly.
The GSD 25 premium sonar module is a remote network solution that provides outstanding fishfinding and bottom tracking capabilities. It offers dual-channel 1 kilo Watt CHIRP, plus Garmin CHIRP ClearVü ™ and Garmin CHIRP SideVü ™ sonar scanning for the clearest scanning images on the water. The images sent to your compatible Garmin chartplotter have target details so clear and precise, you can actually distinguish between small and closely spaced fish at key fishing depths all the way down to 5,000 feet. CHIRP is the most sophisticated sonar technology available for use by the fishing and boating public. CHIRP is an acronym for Compressed High-Intensity Radiated Pulse. What it means to you is much better target resolution, clarity and crispness than any other sonar system. Having Garmin true dual 1 Kilo Watt CHIRP as your traditional sonar allows you to adjust CHIRP frequencies to low or medium, low or high, medium or high to further optimize your sonar performance. Adding CHIRP technology to ClearVü and SideVü scanning sonar further enhances the resolution, target separation and clarity of the sonar images of fish and structure that pass below and to the sides of your boat. Built-in to our new GPSMAP xsv combos and GSD 25 Premium Sonar Module, it uses 1 transducer for traditional CHIRP HD-ID sonar and CHIRP ClearVü and SideVü scanning sonar.
GSD™ 25 Premium Sonar Module
The GSD 25 premium sonar module is a remote network solution that provides outstanding fishfinding and bottom tracking capabilities. It offers dual-channel 1 kW CHIRP, plus Garmin CHIRP DownVü and SideVü sonar scanning for the clearest scanning images on the water. The images sent to your compatible Garmin chartplotter have target details so clear and precise, you can actually distinguish between small and closely spaced fish at key fishing depths all the way down to 5,000 feet.For the serious offshore sportfisherman, this "one-box" remote network sonar solution provides outstanding fishfinding and depth sounder capabilities for vessels with networked MFD installations.
True Dual-Channel 1kW CHIRP
CHIRP is the most sophisticated sonar technology available for use by the fishing and boating public. CHIRP is an acronym for Compressed High-Intensity Radiated Pulse. What it means to you is much better target resolution, clarity and crispness than any other sonar system. Having Garmin true dual 1 kW CHIRP as your traditional sonar allows you to adjust CHIRP frequencies to low/medium, low/high, medium/high to further optimize your sonar performance. Transducer sold separately.
Clearest Scanning Sonar Images on the Water
Adding CHIRP technology to DownV resolution, target separation and clarity of the sonar images of fish and structure that pass below and to the sides of your boat. Built-in to our new GPSMAP xsv combos and GSD 25 Premium Sonar Module, it uses 1 transducer for traditional CHIRP HD-ID sonar and CHIRP DownVü and SideVü scanning sonar. Transducer sold separately.
Choose a Garmin Transducer
This sonar is so unique Garmin has developed their own proprietary transducers that are specially designed to work with the sonar to provide the very best performance.
Features:
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
US$40
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