MartinLogan Motion 20i vs. Micca RB42

MartinLogan Motion 20i Tower Speaker Micca RB42 Reference Bookshelf Speakers
$2000 $150
Dimensions (H × W × D)
36.60” × 6.80” × 11.70”
930mm × 173mm × 297mm
8.70” × 4.90” × 7.90”
221mm × 124mm × 201mm
Power Type
Passive Passive
Frequency Response
46-25,000 Hz 50-20,000 Hz
ASR Score
n/a 4.4
ASR Score w/Subwoofer
n/a 6.6

Key Takeaways

TLDR Summary: In the high-fidelity battle, the MartinLogan Motion 20i tower speakers and the Micca RB42 reference bookshelf speakers cater to different audiophile desires. The Motion 20i, with its elegant electrostatic-like sound courtesy of the Folded Motion tweeters, offers room-filling acoustics and a lush midrange, tailored for the discerning ear with space to spare. Conversely, the compact Micca RB42s, with their rich tonality and surprising bass response for their size, provide an affordable yet high-quality option for the space-conscious listener. The choice hinges on one's room size, budget, and sonic preference between airy highs and intimate soundstaging.

Speaker Comparison

When it comes to the world of high-fidelity audio, the debate between towering floor-standers and compact bookshelf speakers is as old as the hi-fi itself. In this sonic showdown, we pit the elegant MartinLogan Motion 20i tower speakers against the diminutive yet robust Micca RB42 reference bookshelf speakers. Each has its unique selling points and fan base, but how do they really stack up against each other?

MartinLogan Motion 20i: An Elegant Powerhouse

Firstly, let's talk stature. The MartinLogan Motion 20i speakers are a significant presence in any room. These towers don't just stand tall; they command attention with their sleek design and the iconic folded-motion tweeter, a signature of the brand. This design allows for a lightning-fast response time and a broad yet controlled sound dispersion pattern. The result is a soundstage that is wide and enveloping. The twin 5.5-inch aluminum cone woofers in each tower ensure that the bass is tight and articulate, never muddy or overwhelming.

MartinLogan Motion 20i Tower Speaker
MartinLogan Motion 20i arrow (at

Micca RB42: Small but Mighty

In contrast, the Micca RB42 bookshelf speakers are the epitome of compactness, designed to fit into tight spaces or to serve as a discreet audio solution. But don’t let their size fool you; these speakers punch well above their weight. The 4-inch woofer and silk dome tweeter combine to produce a sound that is surprisingly full-bodied and rich for their size. With proper placement, these small wonders can fill a room with a warm and detailed sound that belies their modest dimensions.

Sound Quality: Clarity vs. Warmth

When it comes to sound quality, the MartinLogan Motion 20i exhibits a level of clarity and detail that is hard to match. Vocals come through with stunning realism, and the highs have a crystalline quality that adds airiness to recordings. The Motion 20i truly shines in reproducing the nuances of complex musical arrangements, delivering them with an effortlessness that is a hallmark of high-end audio. The bass response is impactful yet refined, making these towers incredibly versatile across various genres of music.

Micca RB42 Reference Bookshelf Speakers
Micca RB42 arrow (at

On the flip side, the Micca RB42 offers a warmth and musicality that will appeal to those who love a lush, engaging sound. The rich midrange makes these bookshelf speakers an excellent choice for vocal-centric music and smaller-scale compositions. While they may not have the same bass extension as the Motion 20i, the RB42s are no slouches, and their performance in the low end is commendable for their size. The treble is smooth and forgiving, making these speakers a great match for long listening sessions without fatigue.

Room Considerations and Placement

Room size and speaker placement are critical factors in the performance of any speaker. The MartinLogan Motion 20i towers are designed to thrive in medium to large rooms and require some breathing space to fully showcase their capabilities. These are speakers that love to spread out and immerse the listener. Conversely, the Micca RB42s are built for smaller spaces and can be placed on bookshelves or stands. They are less demanding in terms of room acoustics, making them a more flexible option for those with space constraints or who are looking for a secondary speaker system.

In conclusion, both the MartinLogan Motion 20i and the Micca RB42 reference bookshelf speakers offer distinct experiences that cater to different tastes and environments. The Motion 20i, with its superb detail and dynamic range, is a speaker that will satisfy the discerning audiophile with a larger space, while the RB42 is a champion of small spaces, delivering a rich, engaging sound that can easily serve as the heart of a more intimate listening setup.

Check Current Prices:

MartinLogan Motion 20i Tower Speaker
MartinLogan Motion 20i Tower Speaker
Micca RB42 Reference Bookshelf Speakers
Micca RB42 Reference Bookshelf Speakers

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Disclaimer: the speaker data listed on this website are correct to the best of our knowledge, but we do not guarantee the accuracy of the data. Please double-check any measurements with the manufacturer before making a final purchasing decision.