Kii Audio BXT Speakers Extension (Pair)
The THREE BXT system is a studio-grade full-range reference that brings main-monitor scale to any space — without sacrificing precision. Sixteen additional woofers form a vertical line array that shapes and controls the low end, focusing energy where it counts and minimizing floor and ceiling reflections. With over 7,000 watts per stereo pair, you get massive headroom, unshakable control, and the authority to work confidently on any project.
Advanced Control for the Critical Low End
The BXT integrates seamlessly with the THREE, sharing the same DSP brain for perfect time alignment and phase coherence. The cardioid dispersion from the THREE combines with the BXT’s line array effect to deliver bass that’s as accurate as it is powerful, even in challenging acoustic environments.
For Projects That Deserve the Best
From mastering orchestral recordings to producing bass-driven electronic tracks, the THREE/BXT gives you a full-bandwidth, high-SPL monitoring solution with zero compromise on detail or accuracy. It’s the clarity and control you need to make decisions fast — and know they’ll hold up anywhere.
At Home In Any Room
Hidden behind the beauty of the Kii THREE is a fantastic speaker that is small enough to fit easily into modern living spaces. It doesn’t take over your habitat like a huge old audiophile setup; there are no racks, no big towers, no cables to trip over. Instead, there’s intelligence! The clarity and detail, the impressive time coherence, and, most importantly, the handling of room acoustics let the listener dive right into the magical experience of an excellent record, more so than even the best conventional setups can.
All the innovations inside this speaker serve a single purpose: to be more true to the music. Kii brings more music into your life. Let’s face it: buying a second system for daily use because the “big” system is too impractical for background listening was never a solution. Even the best Hi-Fi set should be easy and intuitive to use for anyone in the house. Whenever there’s music on your mind, there should be great music in your home.
The BXT is an extension module that turns the Kii THREE into a veritable floor-standing loudspeaker with 16 additional drivers. The Kii THREE BXT System is absolutely unique as it combines a line source with horizontal directivity control! The BXT makes full use of the Kii THREEs technology, adding a wider frequency range and increased SPL to the game while still being a cardioid system that, despite its size, does not interact with the room. Astoundingly enough, small rooms benefit significantly from the line source concept.
What Makes Kii Audio Truly Unique
Founded in 2015 by acclaimed audio engineer Bruno Putzeys, Kii Audio has quickly become renowned for tackling long-standing challenges in speaker design. At its core lies a revolutionary Active Wave Focusing technology, which employs DSP-driven cardioid dispersion. This innovation allows compact speakers, like the Kii SEVEN, to deliver sound with grand-system clarity while minimizing unwanted room reflections—dramatically enhancing timing, bass precision, and spatial fidelity. What’s more, each Kii THREE BXT packs 3500 watts of Class D amplification across fourteen drivers (front, side, and back), achieving a level of performance and detail often associated with much larger systems.
Disruption and Decades-Long Innovation
Kii Audio is widely seen as a disruptive force in a traditionally conservative audio market. As noted by What Hi‑Fi?, “True innovation seems to be a rare quality in speaker design… But not at Kii.” Their approach not only overcomes typical acoustic compromises but also introduces entirely new paradigms for directivity and listener experience. With a steadfast commitment since 2015 to advancing both hardware and software—encompassing compact cardioid speakers and the newly unveiled Kii Seven wireless music system, complete with multi‑room smart control—the company demonstrates a decade‑long dedication to innovation and pushing boundaries.
Between their bold engineering breakthroughs, professional-grade performance in a refined form, and long-term devotion to innovation, Kii Audio stands out as a genuinely transformative presence in the audio landscape.
Specifications
| System Type: | Full-size floorstanding DSP-controlled monitor speaker system |
| Woofer: | 12 × 6.5” |
| Midrange: | 1 × 5” |
| Waveguided Tweeter: | 1 × 1” |
| Amplification: | 2,000 watt full custom Class D |
| Active Wave Focusing Crossover Filter: | Yes |
| Frequency Response: | -3dB: 20Hz; 100Hz–10kHz: ±0.5dB; 10kHz–20kHz: ±1dB |
| Integrated Tone Control: | Selectable correction for free-standing, near wall or in corner (14 positions) |
| Phase Response: | Selectable: linear phase or minimum latency |
| Protection Limiters: | Yes |
| Controlled Directivity: | 4.8dB (54Hz – 1kHz, slowly rising thereafter) |
| Size: | 20 × 120 × 40cm; 8” × 47” × 16” (W × H × D) |
| Weight: | 51kg (112lbs) |
| Inputs: | Analogue, AES/EBU, KiiLink; SPDIF, TOSLink, USB on Kii Control |
| Selectable Correction: | For free-standing, near wall or in corner (14 positions) |
| Automatic Standby Mode: | Yes |
| Standard: | IEC60268-5 Paragraph 20.6 |
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