Short answer: the Devialet Phantom II 98 dB. It ranks #9 of 67 powered bookshelf speakers by sound quality, rated 4.4/5, at $2,998. The JBL 705P ranks #31, rated 3.9/5, at $1,998, $1,000 cheaper, a saving that is not big enough to make up the sound-quality gap.
The case for the Devialet Phantom II 98 dB: The manufacturer-supplied measurement shows unusually deep bass for the enclosure size: -3dB at 30Hz. The catch: Small-enclosure bass extension at the measurement level does not guarantee the same response at high volume.
The case for the JBL 705P: ASR’s data gives bass reaching -3dB around 48Hz and a 6.71 ideal-subwoofer preference score. The tradeoff: The standalone score is 4.70, and a localized cancellation near 750Hz contributes to the large 7.8dB midrange response span.
Buy the Devialet Phantom II 98 dB. It is rated higher for sound quality, and saving $1,000 with the JBL 705P does not make up for the sound-quality gap.
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Specifications Side By Side
| Devialet Phantom II 98 dB | JBL 705P | |
|---|---|---|
| Price | $2,998 per pair | $1998 per pair |
| Ranked | #9 of 67 in Medium Size Powered Bookshelf Speakers | #31 of 67 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 30Hz (measured, spinorama.org) | 47.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | approximately 22.6Hz (measured, spinorama.org) | 38.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Drivers | One aluminum full-range driver; two aluminum bass drivers | 5” woofer, 2409H 1” compression driver |
| Inputs | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack | XLR/TRS combo (analog), XLR AES3 (digital) |
| Bluetooth Codecs | SBC, AAC | - |
| Amplifier Power | 400W RMS each | 500W total (250W woofer, 250W tweeter) |
| Dimensions | 6.6 x 6.2 x 8.6 in each | 10.6”H x 5.9”W x 10.8”D (268 x 151 x 274 mm) |
| Weight | 9.5 lbs (4.3 kg) each | 12.6 lbs (5.7 kg) each |
| Maximum SPL | 98dB at 1m each (manufacturer specified) | - |
| Spinorama Preference Score | 6.87 | 4.70 |
| Spinorama Preference Score with Perfect Sub | 7.95 | 6.71 |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | Yes |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | Yes |
| Aux Input | No | No |
| Bluetooth | Yes | No |
| Frequency Response | 18Hz - 21kHz (-6dB) (Manufacturer specified) | 39Hz - 36kHz (Manufacturer specified) |
| App | - | No |
| EQ | - | No |
| DSP | - | No |
Related Speaker Comparisons
How Devialet Phantom II 98 dB compares with other leading options:
- Genelec 8331A vs Devialet Phantom II 98 dB
- Neumann KH120 MKII vs Devialet Phantom II 98 dB
- Genelec 8030C vs Devialet Phantom II 98 dB
- Neumann KH80 DSP vs Devialet Phantom II 98 dB
- Devialet Phantom II 98 dB vs Dynaudio LYD 5
Prices on this page were last checked September 26, 2026 at 11:14 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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The Two Speakers In Full
Devialet Phantom II 98 dB: $2,998 per pair Devialet eBay
Pros: The manufacturer-supplied measurement shows unusually deep bass for the enclosure size: -3dB at 30Hz. Scores of 6.87 standalone and 7.95 with an ideal subwoofer suggest that its appeal is not limited to bass quantity. Integrated amplification and network playback can replace several components, and its 2.3dB midrange response span is reasonably even. Measured bass extension of 30Hz (-3dB).
Cons: Small-enclosure bass extension at the measurement level does not guarantee the same response at high volume. Stereo requires two units, and the integrated architecture offers less system flexibility than conventional monitors.
Full Devialet Phantom II 98 dB review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 400W RMS each |
| Aux Input | No |
| Bass Extension (-10dB) | approximately 22.6Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 30Hz (measured, spinorama.org) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Coaxial Input | No |
| Dimensions | 6.6 x 6.2 x 8.6 in each |
| Drivers | One aluminum full-range driver; two aluminum bass drivers |
| Frequency Response | 18Hz - 21kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack |
| Maximum SPL | 98dB at 1m each (manufacturer specified) |
| Optical Input | Yes |
| RCA Input | No |
| Spinorama Preference Score | 6.87 |
| Spinorama Preference Score with Perfect Sub | 7.95 |
| TRS Input | No |
| USB Input | No |
| Weight | 9.5 lbs (4.3 kg) each |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Devialet Phantom II 98 dB vs Genelec 8320A
- Devialet Phantom II 98 dB vs Genelec 8020D
- Devialet Phantom II 98 dB vs Genelec 8330A
- Devialet Phantom II 98 dB vs Klipsch The Fives
- Devialet Phantom II 98 dB vs Dynaudio LYD 5
- Devialet Phantom II 98 dB vs JBL 305P MKII
- Devialet Phantom II 98 dB vs Neumann KH80 DSP
- Devialet Phantom II 98 dB vs KEF LS50 Wireless II
- See all 39 comparisons
JBL 705P: $1998 per pair B&H Photo Video eBay
Pros: ASR’s data gives bass reaching -3dB around 48Hz and a 6.71 ideal-subwoofer preference score. Its waveguided compression driver and dedicated amplification are suited to studio use, and the broad response trend is close to level. It has useful low-frequency reach for a five-inch monitor. Measured bass extension of 47.6Hz (-3dB).
Cons: The standalone score is 4.70, and a localized cancellation near 750Hz contributes to the large 7.8dB midrange response span. A crossover-region rise also prevents reference-flat reproduction. An average flat trend does not erase these features, and amplifier wattage is not a measured clean-SPL rating. The data does not support calling it uniformly flat simply because it shares technology with larger JBL models.
Full JBL 705P review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 500W total (250W woofer, 250W tweeter) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 38.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 47.6Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 10.6”H x 5.9”W x 10.8”D (268 x 151 x 274 mm) |
| Drivers | 5” woofer, 2409H 1” compression driver |
| EQ | No |
| Frequency Response | 39Hz - 36kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR/TRS combo (analog), XLR AES3 (digital) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 4.70 |
| Spinorama Preference Score with Perfect Sub | 6.71 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 12.6 lbs (5.7 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons