Short answer: the Genelec 8331A. It ranks #1 of 108 powered bookshelf speakers by sound quality (rated 4.8/5) at $5,750 and is still sold new; the Devialet Phantom II 98 dB ranks #11 (rated 4.4/5) and is discontinued, so it is only an option used. The Devialet Phantom II 98 dB’s replacement, the Devialet Phantom Ultimate 98dB, is rated 4.4/5 at $3,998.
The Genelec 8331A is the better-sounding pick. Compact studio monitors with reference level accuracy and automatic room calibration, for critical listening and mixing. Watch for: Expensive, with studio-oriented XLR connectivity rather than consumer streaming.
The Devialet Phantom II 98 dB is the deeper-bass choice. A compact wireless streaming speaker with startlingly deep bass for its size and an even, well balanced sound. Its bass reaches about 30Hz before falling 3dB, against 49Hz for the Genelec 8331A. The tradeoff: Small-enclosure bass extension at the measurement level does not guarantee the same response at high volume.
Buy the Genelec 8331A. It is rated higher for sound quality, and the Devialet Phantom II 98 dB is discontinued, so it is only available used.
Want more options? Browse the full Powered Home rankings.
Compact studio monitors with reference level accuracy and automatic room calibration, for critical listening and mixing.
A compact wireless streaming speaker with startlingly deep bass for its size and an even, well balanced sound.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Genelec 8331A | Devialet Phantom II 98 dB | |
|---|---|---|
| Price | $5,750 per pair | $2,998 per pair Discontinued |
| Ranked | #1 of 108 in Medium Size Powered Bookshelf Speakers | #11 of 108 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 49Hz (measured, Erin’s Audio Corner) | 30Hz (measured, spinorama.org) |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | approximately 22.6Hz (measured, spinorama.org) |
| Maximum SPL | 100dB at 3m before protection (measured, Erin’s Audio Corner) | 98dB at 1m each (manufacturer specified) |
| Amplifier Power | 72W LF + 36W MF + 36W HF | 400W RMS each |
| Drivers | Dual 130x65mm woofers; 90mm coaxial mid; 19mm tweeter | One aluminum full-range driver; two aluminum bass drivers |
| Dimensions | 12”H x 7.4”W x 8.3”D (305 x 189 x 212 mm) | 6.6 x 6.2 x 8.6 in each |
| Weight | 14.8 lbs (6.7kg) each | 9.5 lbs (4.3 kg) each |
| Spinorama Preference Score | 6.57 | 6.87 |
| Spinorama Preference Score with Perfect Sub | 8.51 | 7.95 |
| Inputs | XLR, AES/EBU | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack |
| XLR Input | Yes | No |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | Yes | No |
| Aux Input | No | No |
| Bluetooth | No | Yes |
| Frequency Response | 45Hz - 37kHz (-6dB) (Manufacturer specified) | 18Hz - 21kHz (-6dB) (Manufacturer specified) |
| Bluetooth Codecs | - | SBC, AAC |
| Bluetooth Version | - | 5.0 |
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