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Earthquake Sound XJ-300ST Home Audio 300W Class drops to $394.95 on Amazon

Earthquake Sound XJ-300ST 300W amp drops to $394.95 on Amazon, a 28% savings below its 30-day average for compact, high-output home audio setups.

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Technobezz

Senior Editor

Aug 22, 2026
3 min read
Technobezz
Earthquake Sound XJ-300ST Home Audio 300W Class drops to $394.95 on Amazon

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Earthquake Sound XJ-300ST Home Audio 300W Class sees price cut to $394.95

$155.05 off right now.

Need clean, high-output amplification for passive speakers, subwoofers, or tactile transducers without burning through rack space? The Earthquake Sound XJ-300ST is a half-width, 1U modular amp that has been a go-to for installers.

Right now Amazon has it at its lowest current figure.

Earthquake Sound XJ-300ST Home Audio 300W Class drops to $394.95 - save $155.05. That 28% cut brings the amp in below its 30-day average of $445.31, so the discount is real even if the unit has dipped lower in the past.

THE DEAL

Earthquake Sound XJ-300ST Home Audio 300W Class

Earthquake Sound XJ-300ST Home Audio 300W Class

$394.95 (was $550) - Save $155.05 (28% off)

WhereAmazon

ExpiresNo end date listed

Get This Price

For just $394.95, down from its list price of $550, this sits below the 30-day average while staying above the all-time low of $343.14. The price history shows a 90-day average of $423.84 and a 180-day figure of $411.42, so the current tag undercuts what buyers have typically paid recently.

What You're Getting

The XJ-300ST is built around Earthquake's proprietary XJ technology, which allows a novel 2.1 configuration by connecting a third speaker between the two main channels for a two-satellite-and-subwoofer setup. Power handling tops out at 2 x 110 WRMS at 8 ohms, 2 x 170 WRMS at 4 ohms, and 300 WRMS at 4 ohms mono bridged. The half-rack chassis takes just 1U of rack space, and two units can be mounted side by side with optional rack ears. It runs cool, includes a +12V trigger and auto signal sensing, and delivers a signal-to-noise ratio above 97 dB with total harmonic distortion under 0.08%.

Who This Is For

This is aimed at custom installers and home theater builders who need flexible, multi-channel power in a small footprint. The modular design means you can stack multiple units for a full surround rig, and the 2.1 matrix mode makes it a strong fit for a compact satellite-and-sub setup.

If you only need a basic two-channel amp for a simple pair of bookshelf speakers, simpler and cheaper options exist.

Final Verdict

The 28% discount to $394.95 lands below recent averages, so if you are outfitting a rack or expanding a surround system. This is a fair price to act on. Use the savings to grab the rack-mounting ears and lock in the configuration you want.

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