Gallo Acoustics Nucleus Micro


The Nucleus Micro is our best-selling speaker for a reason – these 4” all-metal spheres deliver superlative sound, at an attractive price.

Sold Individually

*See also Gallo Acoustics Nucleus Micro on Stand

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Gallo Acoustics Micro Satellite Speaker

Our Best Selling Loudspeaker!

The Nucleus Micro is Gallo’s best-selling loudspeaker, and is sold at more than 150 dealers (in over 40 countries) worldwide. We helped introduce the world to the round speaker, and we’ve spent the last several decades further perfecting (and patenting) this technology.

The Nucleus Micro is one of our proudest achievements, because it delivers high-end sound at an entry-level price. If you’ve thought about high-end audio, we’ve got your show tickets right here. And this little 4” steel-housed number has been garnering accolades for more than 20 years.

They are small (literally the size of an orange), and have a dual effect on your décor – they can either be mounted to prominence (eliciting many “wow, those are cool speakers” comments), or they can vanish unobtrusively into any décor. The choice is yours.

But the sound does anything BUT disappear. Full, dynamic, and crystal clear, this little marvel will involve you with your music and movies like no other small loudspeaker, and even outperform box speakers many times their size and price. Use these as your main speakers, as rear satellites, or any combination of such. They are that good. You can also use them for desktop listening as well (they go great with music streaming services, and can also add some serious punch to your gaming rig!)

Often copied by cheaper adaptations, the Nucleus Micro’s sound can never be replicated because of Gallo’s U.S. patent protection (like our patented S2 damping control pods.) Yes, being an original has its advantages. You can only get Gallo sound from Gallo speakers.

“These speakers are the best I have heard in the Micro class. If a small, affordable, low visibility speaker is your desire, this high resolution gem is a perfect choice.”
~Tim Hart, AudioVideo Revolution

Additional information

Dimensions 4 × 4 × 4 in

Matte Black, Matte White, Stainless Steel

Mounting Option

In-Ceiling Mount (Paintable), Table Mount (Standard), Wall Mount


Model No
Frequency Response 100Hz to 18Khz (on wall)
120Hz to 18KHz (on stand)
Impedance 8 ohms (nominal)
Sensitivity 89 dB
Power Handling 100 watts (small enclosure)
Driver 3″ full range
Dimensions 4″ Sphere
Cone Material Mical Polypropylene Compound
Enclosure Material Mild Steel/Stainless Steel
Warranty 5 Years Parts & Labor
Crossover No
Connections No
Finish No
Phase No
Low Pass No
High Pass No
Bass EQ No
Power Auto On/Off No
Gain No
Tweeter No
Weight No
Woofers Cover No


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