Short answer: the Devialet Phantom Ultimate 98dB for better sound quality, the ADAM Audio A4V for the lower price. The Devialet Phantom II 98 dB ranks higher than the ADAM Audio A4V (#11 vs #67 of 108 powered bookshelf speakers) but is discontinued. Its replacement, the Devialet Phantom Ultimate 98dB, is rated 4.4/5 at $3,998; the ADAM Audio A4V is rated 3.6/5 at $1,079.98, $2,918.02 cheaper.
What the ADAM Audio A4V does well: A compact studio monitor with onboard DSP, placement controls and room correction support for tricky rooms. Watch for: A small average-deviation figure hides a major localized response irregularity: the selected measurement spans 10.8dB from 300Hz to 5kHz, and listening-window narrow-band deviation is 0.547.
The Devialet Phantom II 98 dB is the more accurate choice. A compact wireless streaming speaker with startlingly deep bass for its size and an even, well balanced sound. Its measured preference score, a predictor of how neutral it sounds, is 6.87 against 3.92 for the ADAM Audio A4V. The catch: Small-enclosure bass extension at the measurement level does not guarantee the same response at high volume.
Buy the ADAM Audio A4V if price matters most. For better sound quality, the Devialet Phantom Ultimate 98dB, the replacement for the discontinued Devialet Phantom II 98 dB, is rated higher but costs $3,998.
Want more options? Browse the full Powered Home rankings.
A compact studio monitor with onboard DSP, placement controls and room correction support for tricky rooms.
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
| ADAM Audio A4V | Devialet Phantom II 98 dB | |
|---|---|---|
| Price | $1,079.98 per pair | $2,998 per pair Discontinued |
| Ranked | #67 of 108 in Medium Size Powered Bookshelf Speakers | #11 of 108 in Medium Size Powered Bookshelf Speakers |
| Enclosure | 2-way active, dual front ports | - |
| Drivers | X-ART folded-ribbon tweeter, 4” MLM woofer | One aluminum full-range driver; two aluminum bass drivers |
| Dimensions | 10.6H x 6.2W x 8.7D in | 6.6 x 6.2 x 8.6 in each |
| Weight | 12.8 lbs (5.8 kg) each | 9.5 lbs (4.3 kg) each |
| Amplifier Power | 130W RMS each | 400W RMS each |
| Inputs | XLR and RCA; Ethernet for control | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack |
| Spinorama Preference Score | 3.92 | 6.87 |
| Spinorama Preference Score with Perfect Sub | 6.33 | 7.95 |
| XLR Input | Yes | No |
| RCA Input | Yes | No |
| TRS Input | No | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Bluetooth | No | Yes |
| Frequency Response | 58Hz - 41kHz (-3dB) (Manufacturer specified) | 18Hz - 21kHz (-6dB) (Manufacturer specified) |
| Bass Extension (-3dB) | - | 30Hz (measured, spinorama.org) |
| Bass Extension (-10dB) | - | approximately 22.6Hz (measured, spinorama.org) |
| Bluetooth Codecs | - | SBC, AAC |
| Maximum SPL | - | 98dB at 1m each (manufacturer specified) |
| Bluetooth Version | - | 5.0 |
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