MartinLogan Motion 15i vs. Presonus Eris E3.5

MartinLogan Motion 15i Bookshelf Speaker Presonus Eris E3.5 3.5” Near Field Studio Monitor
$900 $100
Dimensions (H × W × D)
11.40” × 6.80” × 9.50”
290mm × 173mm × 241mm
10.24” × 7.00” × 7.68”
260mm × 178mm × 195mm
Power Type
Passive Powered
Frequency Response
60-25,000 Hz 80-20,000 Hz
ASR Score
n/a 1.5
ASR Score w/Subwoofer
n/a 4.3

Key Takeaways

TLDR Summary: In the world of high-fidelity audio, the MartinLogan Motion 15i and PreSonus Eris E3.5 represent two distinct philosophies. The Motion 15i, a luxury bookshelf speaker, boasts an intricate Folded Motion tweeter, delivering a detailed and expansive soundstage tailored for the discerning audiophile. In contrast, the Eris E3.5, a near-field studio monitor, offers pragmatic and precise sound reproduction aimed at content creators. While the Motion 15i shines in nuanced musicality, the E3.5 stands out for its flat frequency response for accurate monitoring. Budget, usage, and personal taste will guide listeners between these two sonic experiences.

Speaker Comparison

The ritual of selecting the perfect set of speakers is akin to choosing a fine wine - the nuances and subtleties of each brand and model can transform the experience from the mundane to the extraordinary. Today, we have before us a pair of contenders that, while both capable of producing exquisite audio, cater to distinctly different palates. The MartinLogan Motion 15i bookshelf speaker is a monument to audiophile-grade craftsmanship, designed to enchant the most discerning ears. Contrasting this, the PreSonus Eris E3.5 near-field studio monitor promises professional sound reproduction with a focus on accuracy, aimed at creators and sound engineers.

Design Philosophy and Audience

The MartinLogan Motion 15i, with its luxurious real-wood veneer and signature perforated steel grille, oozes sophistication and class. Every detail, from the Folded Motion tweeter to the precision-built woofer, is engineered with an uncompromising quest for sonic excellence. This speaker is for the audiophile, someone who not only listens to music but also revels in the intricacies of sound staging and imaging. On the flip side, the PreSonus Eris E3.5, with its utilitarian design, is built for function over form. Its compact nature and straightforward aesthetics are telltale signs of a speaker system designed for near-field monitoring, making it the go-to choice for audio production and mixing.

MartinLogan Motion 15i Bookshelf Speaker
MartinLogan Motion 15i arrow (at

Sound Characteristics

When it comes to sound, the MartinLogan Motion 15i stands out with its airy highs, thanks to the innovative Folded Motion tweeter. This technology allows for lightning-fast transient response, which translates to a high level of detail and clarity in the treble frequencies. The bass response, while not ground-shaking, is tight and nuanced, allowing these speakers to stand confidently on their own or to be paired with a subwoofer for a fuller range. In contrast, the PreSonus Eris E3.5 aims for a flat frequency response, a critical feature for audio mixing where accuracy is paramount. While these monitors may not deliver the 'wow' factor on first listen, they offer a true depiction of the sound, uncolored and unbiased, making them an indispensable tool for creators.

Performance and Use Cases

Performance-wise, the MartinLogan Motion 15i excels in a stereo setup, ideally in a medium-sized room where their sound can bloom and fill the space with an almost tangible sonic presence. They are perfectly suited for the listener who wants to sit back and be enveloped in a rich tapestry of sound. The PreSonus Eris E3.5, however, is at home on a desk or in a small studio, where its near-field design ensures that the sound is accurate and unadulterated, even in close proximity. They are the workhorse speakers that allow audio professionals and enthusiasts to hear every detail in their mix, making them crucial for critical listening applications.

Presonus Eris E3.5 3.5” Near Field Studio Monitor
Presonus Eris E3.5 arrow (at

When delving into the realm of connectivity and expandability, the MartinLogan Motion 15i prefers simplicity. With traditional binding posts that accommodate banana plugs, spades, or bare wire, these speakers are ready to be the centrepiece of a high-fidelity audio system. Conversely, the PreSonus Eris E3.5 comes equipped with multiple input options such as RCA, TRS, and even a front-panel AUX input, offering versatility for various audio sources and equipment.

Another significant aspect to consider is the price point. The MartinLogan Motion 15i represents a considerable investment, indicative of its premium status in the audio landscape. It's a speaker that says 'commitment' to the audiophile journey. The PreSonus Eris E3.5, on the other hand, is a testament to accessibility. It brings professional-level sound to the table without the need to break the bank, making it an excellent entry point for budding producers and mixers or those who need a reliable secondary monitoring option.

In summation, the MartinLogan Motion 15i bookshelf speaker and the PreSonus Eris E3.5 near-field studio monitor stand as testaments to their respective disciplines within the audio world. Whether you're after the lush, room-filling sound catered to the audiophile ear or the unvarnished truth of audio production, these speakers offer distinct paths to auditory bliss. The choice, as with any fine auditory instrument, lies in the ears of the beholder and the uses they envisage in their personal symphony of sound.

Check Current Prices:

MartinLogan Motion 15i Bookshelf Speaker
MartinLogan Motion 15i Bookshelf Speaker
Presonus Eris E3.5 3.5” Near Field Studio Monitor
Presonus Eris E3.5 3.5” Near Field Studio Monitor

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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.