Gallo Acoustics Micro Speaker (Race Red) – Used

Gallo Acoustics Micro Speaker (Race Red)

This listing is for a pre-owned, used unit of the Gallo Acoustics Micro, the compact spherical satellite speaker that has been the brand’s entry point for decades. The Micro built its reputation by doing something conventional small speakers do not: it puts a single 3-inch full-range driver inside a 4-inch metal sphere, removes the crossover entirely, and lets the shape of the enclosure do the acoustic work. Finished here in Race Red, this used example offers the same design and specification as the standard Micro, in a finish that was always intended to be seen rather than hidden. It is sold as a single satellite, ready to slot into a stereo pair, a home cinema system or a multi-room setup where a small, distinctive speaker is needed.

Key features

• Pre-owned unit of the original Gallo Acoustics Micro satellite speaker
• 3-inch full-range driver in a 4-inch spherical metal enclosure
• No crossover, for a single, coherent point source
• Patented S2 fill technology to extend low-frequency performance
• 89 dB sensitivity and 8 ohm nominal impedance
• 100 watts power handling, in the Race Red finish

Why a sphere

Gallo chose a sphere because it is the strongest and most acoustically neutral shape available for a small enclosure. A conventional box has parallel internal walls that set up standing waves, and sharp external edges that diffract sound as it leaves the cabinet. The Micro’s spherical steel enclosure has neither problem. There are no parallel surfaces inside to store and release energy as resonance, and no edges outside to smear imaging. The result, from a cabinet just 10.2 cm across, is a soundstage that is noticeably larger and more precisely placed than the speaker’s size suggests, which is why the Micro has long been used where visible box speakers would dominate a room.

One driver, no crossover

The Micro uses a single 3-inch full-range driver with a cone made from a mica and polypropylene compound, and there is no crossover network between the amplifier and that driver. Every frequency the speaker reproduces comes from the same cone, at the same moment, from the same point in space. That coherence is the main reason vocals and dialogue sound so direct through this speaker: there is no handover between a woofer and a tweeter to disturb the middle of a voice. Frequency response is rated at 100 Hz to 18 kHz when the speaker is mounted on a wall, ceiling or floor stand, and 120 Hz to 18 kHz on a tabletop, so a subwoofer is a normal part of a full-range Micro system.

Placement and system building

At 795 grams, the Micro can sit on a shelf or desk, mount on a wall or ceiling, or stand on dedicated floor stands, and its all-metal terminal area accepts standard banana plugs and speaker cable up to 4 mm in diameter. Two Micros make a compact stereo pair for a desk or small room. Five, partnered with a subwoofer, make a discreet home cinema front and surround set, and single units work well as surround, height or multi-room speakers. Its 8 ohm impedance and 89 dB sensitivity make it an easy load for most AV receivers and stereo amplifiers, provided the amplifier’s crossover sends the deepest bass to a subwoofer, as the rated response intends.

Buying a used Micro

Because this is a pre-owned unit, its value lies in the design rather than in box-fresh presentation: a solid steel sphere, a simple single-driver layout with no crossover components to age, and a finish that hides its size in plain sight. Checked over and connected with correct polarity like any passive satellite, it does the job the Micro has always done.

For listeners who want genuine high-end thinking in the smallest possible footprint, this used Gallo Acoustics Micro in Race Red remains a distinctive, flexible satellite for music, film and multi-room systems alike.