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Motion Sound PRO-3

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Page last updated Mar 30, 2026

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Description

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Discover a new dimension in sound with the Motion Sound PRO-3, a guitar amplifier cabinet designed to elevate your music. Perfect for musicians who crave rich, dynamic tones, this cabinet combines innovative technology with exceptional craftsmanship. Unlike traditional cabinets, the PRO-3 is equipped with a rotary horn system, providing a signature rotating speaker effect that simulates the classic Leslie sound. This feature is particularly appealing for guitarists seeking the warmth and motion of vintage tone in a modern rig.

The PRO-3 is built to work seamlessly with your existing amplifier setup, enhancing your sound without overpowering it. With its easy-to-use interface, you can effortlessly dial in your desired tone, allowing you to focus on what's truly important – your music. From intimate practice sessions to lively stage performances, the PRO-3 adapts with ease, providing consistent sound quality across all environments.

Made with durable materials, the Motion Sound PRO-3 is not only about stellar sound; it's also built to last. Whether you're a touring musician or a studio enthusiast, this cabinet is designed to withstand the rigors of the road while delivering uncompromised audio fidelity.

Key Features:

Rotary horn system for authentic rotating speaker effect
Compatible with existing amplifier setups
Easy-to-use control interface
Durable construction for long-lasting use
Suitable for both live performances and studio recordings

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Motion Sound PRO-3.

Features and functionality

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The Pro3T allows for control over the speed of the drum, including acceleration and deceleration, enhancing realistic rotary effects.
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The Pro 3T's line level output is hotter than typical instrument levels, necessitating careful volume management when connecting to guitar amps.
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Mods and upgrades

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Replacing the Low Pro's original speaker with a Peavey Black Widow can significantly improve bass punch.
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Setup and maintenance

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Drive belts in the Pro 3 and Low Pro may wear out over time and require replacement for optimal performance.
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For hybrid amps with tube preamps, the Pro 3T's high-level output does not adversely affect the tubes when managed properly.
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Use cases and applications

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The Pro3T and Low Pro combination offers a noticeable separation of horn and drum sounds, enhancing realism for users of B3 clonewheel organs.
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Users have successfully integrated the Pro 3T with hybrid amps, ensuring the solid state power amp handles the line level output without damage.
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Despite its bulk, the KBR-3D is conveniently the right height for sitting and playing pedals, offering a practical advantage for some users.
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Value and pricing

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A Pro3T alone typically ranges from $400 to $800, suggesting the $1000 price for a working Pro3T and Low Pro is reasonable.
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Owners have found Leslie 760s with preamp pedals for less than $500, offering a more affordable alternative to the Pro 3 series for those seeking rotary effects.
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Comparisons

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Solid state amps are deemed safer for use with the Pro 3T's line level output compared to full tube amps, due to potential output level sensitivity.
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Build quality

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The KBR-3D is made of particle board and is less portable due to handles not aligning with its center of gravity, making it cumbersome for gigs.
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Critic Reviews

Review: Motion Sound PRO-3

theatreorgans.com

The Motion Sound PRO-3 impresses with its effective Leslie simulation, offering live organ players a portable and maintenance-free alternative to traditional Leslies. It shines with its real rotating treble horn, providing a lively and dynamic sound that outperforms conventional electronic simulators. However, purists might miss the warmth and overdrive of tube Leslies, and the bass rotor is only a simulation, which may not satisfy those with discerning ears. The lack of MIDI control and some physical design quirks are minor drawbacks. Despite these, the PRO-3 is a convincing, cost-effective solution for a live setting, garnering praise for its exceptional customer service and dedication to user feedback.

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Dan Palmer

Guitarist

Zebrahead

Verified via Photo

"Today was a clean guitar day! My toys consisted of a 1970 Fender Deluxe Reverb amp, Jameson Irish Whiskey, Roland JC120, Motion Sound Leslie, and an American made Fender Start with lace sensors pickups!"