Audioengine A2+ vs. KEF Q150

Audioengine A2+ Wireless Bluetooth Speakers KEF Q150 Bookshelf Speakers
$270 $600
Dimensions (H × W × D)
6.00” × 4.00” × 5.25”
152mm × 102mm × 133mm
11.92” × 7.08” × 10.94”
303mm × 180mm × 278mm
Power Type
Powered Passive
Frequency Response
65-22,000 Hz 51-28,000 Hz
ASR Score
n/a 4.8
ASR Score w/Subwoofer
n/a 6.9

Key Takeaways

TLDR Summary: The Audioengine A2+ Wireless speakers offer a compact, versatile solution for desktop and intimate spaces, blending the convenience of Bluetooth with a punchy, clear sound signature. On the other hand, the KEF Q150s, with their Uni-Q driver array, bring a superior soundstage and detail to the table, suited for larger rooms and critical listening but lack built-in wireless capabilities. The A2+ appeals to those prioritizing ease of use and space-saving designs, while the Q150s cater to audiophiles seeking audio fidelity and expansion potential in a traditional bookshelf format.

Speaker Comparison

When embarking on the journey to find the perfect set of bookshelf speakers, the discerning listener is often faced with a choice between aesthetic, performance, and the modern convenience of wireless technology. In this sonic standoff, we have two contenders: the Audioengine A2+ Wireless Bluetooth Speakers, a sleek, compact pair that embraces the wireless revolution, and the KEF Q150 Bookshelf Speakers, which hold the banner for traditional, high-fidelity audio. Both units cater to different ends of the audio enthusiast spectrum, yet they share the common goal of delivering an exceptional listening experience within the confines of a compact form.

The Wireless Wonder: Audioengine A2+

The Audioengine A2+ is a true marvel for those who prioritize convenience and the minimalist aesthetic of wireless setups. Bluetooth connectivity ensures that your listening area is devoid of the clutter of cables, offering a clean, streamlined look that is perfect for the modern workspace or living area. What's more, the A2+ doesn't just rely on its wireless features to win over users; it brings forth a sound quality that is remarkably full-bodied and clear for speakers of such modest size. The built-in DAC is a significant addition, allowing these speakers to bypass the often subpar digital audio converters found in many computers and mobile devices.

Audioengine A2+ Wireless Bluetooth Speakers
Audioengine A2+ arrow (at

The Audiophile's Choice: KEF Q150

On the other side of the spectrum, we find the KEF Q150 Bookshelf Speakers, a pair that has been engineered with the audiophile's critical ear in mind. Unlike the A2+, the Q150 speakers don't offer Bluetooth connectivity, but what they lack in wireless technology, they more than make up for in acoustic performance. At the heart of each speaker lies KEF's signature Uni-Q driver array, which unifies the tweeter and mid-range driver, resulting in a more detailed, cohesive sound. This design choice leads to an impressive soundstage that gives the illusion of a live performance right in your room—a trait that is highly sought after by those who crave an immersive listening experience.

Design and Build Quality

In terms of design, the Audioengine A2+ speakers exude a modern charm with their compact form factor. They are available in a variety of finishes, which allows them to blend into or stand out from your decor, depending on your preference. The build quality is robust, with the speakers feeling solid and well-constructed, despite their small footprint. The KEF Q150, conversely, boasts a larger size, which is indicative of their more traditional approach to bookshelf speaker design. The Q150's finish is refined and understated, exuding an air of classic sophistication that will appeal to traditionalists and modernists alike. The attention to detail in the construction ensures that the speakers are not only visually appealing but also acoustically inert, minimizing unwanted resonances that might color the sound.

KEF Q150 Bookshelf Speakers
KEF Q150 arrow (at

When it comes to sound, the Audioengine A2+ impresses with its ability to deliver a robust low end, despite the absence of a dedicated subwoofer. The bass is punchy and more than adequate for casual listening sessions, though it might fall short for bass-heavy genres or for those who desire the chest-thumping experience of larger speakers. The KEF Q150, with its larger cabinet and driver design, provides a deeper and more authoritative bass response. The low frequencies are well-defined and controlled, lending a sense of power and depth to music that the A2+ simply can't match. This makes the Q150 a preferable choice for those who are looking for a more dynamic and full-bodied sound.

High-frequency reproduction is an area where both speaker sets shine, but in different ways. The A2+ offers crisp and clear highs, which complement the overall balanced sound signature. The detail retrieval is commendable for speakers of this size. KEF's Q150, with its Uni-Q driver, takes the high-frequency clarity to another level. The dispersion of sound is even and consistent, thanks to the concentric placement of the tweeter within the mid-range driver. This results in a treble that is not just precise but also smooth, without the harshness that some speakers exhibit at higher volumes.

User Experience and Functionality

The user experience also diverges significantly between these two models. The Audioengine A2+ caters to those who value ease of use and flexibility. Its wireless functionality, combined with multiple input options, including USB and RCA, means it can serve as the audio hub for a variety of devices. For the KEF Q150, the focus is on pure performance, with the assumption that the listener will have a dedicated amplifier or receiver to drive them. This means a bit more complexity in setup and potentially additional cost, but also the opportunity to tailor the sound to personal taste with different amplifier pairings.

Finally, the price point and value proposition of the Audioengine A2+ and KEF Q150 will play a pivotal role in the decision-making process. The A2+ speakers offer great value for those seeking a versatile, all-in-one solution that demands minimal space and setup effort. They are ideal for desktop use or smaller rooms where space is at a premium. The KEF Q150, being more expensive, requires a significant investment, not just financially but also in terms of space and additional components. However, for the audiophile willing to make that investment, the Q150 offers a listening experience that is truly high-end, rivalling speakers that are often much pricier.

In conclusion, whether you lean towards the modern, wireless convenience of the Audioengine A2+ or the audiophile-grade performance of the KEF Q150, both sets of speakers offer compelling reasons to take them home. The A2+ will charm you with its simplicity and adaptability, while the Q150 will seduce you with its acoustic prowess and the promise of an enveloping soundstage. In the end, your choice will come down to what you prioritize in your personal listening experience: the ease and flexibility of wireless technology or the depth and richness of traditional, high-fidelity sound.

Check Current Prices:

Audioengine A2+ Wireless Bluetooth Speakers
Audioengine A2+ Wireless Bluetooth Speakers
KEF Q150 Bookshelf Speakers
KEF Q150 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.