These sit in different size classes, so this is not a straight ranking comparison. The Genelec 8381A ranks #1 of 15 powered floorstanding speakers by sound quality at $64,000; the Kii THREE ranks #3 of 119 powered bookshelf speakers by sound quality at $16,970.
Why pick the Genelec 8381A: A giant flagship studio main monitor with full range bass and enormous output, so it needs no subwoofer, plus room calibration. The tradeoff: Only listening reviews have been published, so its tonal balance and directivity can’t be compared with ranked speakers.
The case for the Kii THREE: Compact cardioid active speakers with extremely accurate sound and full range bass that walls barely color. The catch: Deep-bass output has limits: demanding low-frequency material at high levels can trigger compression or audible distress.
Buy the Genelec 8381A at $64,000 if you want a powered floorstanding speaker. Buy the Kii THREE at $16,970 if you want a powered bookshelf speaker instead.
About the ratings: the Genelec 8381A’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 4.7 to 5.0, so this verdict could change once it is measured.
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Specifications Side By Side
| Genelec 8381A | Kii THREE | |
|---|---|---|
| Price | $64,000 per pair | $16,970 per pair |
| Ranked | #1 of 15 in Large Size Powered Floorstanding Speakers Estimated | #3 of 119 in Large Size Powered Bookshelf Speakers |
| Dimensions | 57.4”H x 19.7”W x 27.3”D (1458 x 500 x 694 mm) | 15.7”H x 7.9”W x 15.7”D |
| Weight | 357.1 lbs (162 kg) each | 42.1 lbs (19.1 kg) each |
| Drivers | 3x 15” (380mm) woofers, 4x 5” (125mm) midrange, 5” (125mm) coaxial midrange with 1” (25mm) coaxial tweeter | Four 6.5” woofers; 5” midrange; 1” waveguided tweeter |
| Amplifier Power | 5426W Class D (external 3U rack amplifiers) | 1,500W total per speaker; Six Ncore channels |
| Frequency Response | 20Hz - 35kHz (±1.5dB) (Manufacturer specified) | 20Hz - 20kHz (-6dB at 20Hz; ±0.5dB 100Hz-10kHz; ±1dB 10kHz-20kHz) (Manufacturer specified) |
| Maximum SPL | 126dB @ 1m (manufacturer specified) | - |
| DSP | Yes | Yes; boundary, contour, phase-exact and low-latency modes |
| EQ | Yes (via GLM software) | - |
| App | Yes (GLM) | - |
| Inputs | XLR, AES/EBU | XLR (analog), XLR AES/EBU (digital), proprietary KiiLink digital multi-pin |
| Bluetooth | No | No |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| AES Input | Yes | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| Aux Input | No | No |
| Bass Extension (-3dB) | - | 28Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | - | 20.5Hz (measured, Erin’s Audio Corner) |
| Coverage | - | DSP-controlled cardioid above approximately 70-90Hz |
| Spinorama Preference Score | - | 7.70 |
| Spinorama Preference Score with Perfect Sub | - | 8.35 |
Where the Ratings Come From
- Genelec 8381A: reviews by Erin’s Audio Corner, Sound On Sound and What Hi-Fi?.
- Kii THREE: Spinorama.org measurements and reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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