Short answer: the Devialet Phantom II 98 dB on measured sound quality, the Adam Audio A4V on price. The Devialet Phantom II 98 dB ranks #9 of 65 powered bookshelf speakers at $2998. The Adam Audio A4V ranks #42 at $599.99, $2398.01 cheaper.
What the Adam Audio A4V offers: Compact monitor with onboard DSP, placement controls and room-correction integration. ASR’s Klippel data gives a -3dB point around 59Hz and preference scores of 3.02 standalone and 5.43 with an ideal subwoofer. Its adjustment facilities are useful when placement or tonal correction is needed. 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 native response should therefore not be called smoothly neutral. Correction potential is not the same as stock performance, and analog audio inputs mean a separate interface is needed for USB sources.
What the Devialet Phantom II 98 dB offers: The manufacturer-supplied measurement shows unusually deep bass for the enclosure size: -3dB at 30Hz. Scores of 6.07 standalone and 7.15 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. Watch for: 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.
Buy the Adam Audio A4V when the price outweighs sound quality for you, and the Devialet Phantom II 98 dB when sound quality outweighs the price instead.
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Specifications Side By Side
| Adam Audio A4V | Devialet Phantom II 98 dB | |
|---|---|---|
| Price | $1,199.98 per pair | $2,998 per pair |
| Ranked | #42 of 65 in Medium Size Powered Bookshelf Speakers | #9 of 65 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 | 3.02 | 6.07 |
| Spinorama Preference Score with Perfect Sub | 5.43 | 7.15 |
| 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) |
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 16, 2026 at 12:41 AM 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
Adam Audio A4V: $1,199.98 per pair B&H Photo Video eBay
Pros: Compact monitor with onboard DSP, placement controls and room-correction integration. ASR’s Klippel data gives a -3dB point around 59Hz and preference scores of 3.02 standalone and 5.43 with an ideal subwoofer. Its adjustment facilities are useful when placement or tonal correction is needed.
Cons: 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 native response should therefore not be called smoothly neutral. Correction potential is not the same as stock performance, and analog audio inputs mean a separate interface is needed for USB sources.
Full Adam Audio A4V review and specifications →
| Amplifier Power | 130W RMS each |
|---|---|
| Dimensions | 10.6H x 6.2W x 8.7D in |
| Drivers | X-ART folded-ribbon tweeter, 4" MLM woofer |
| Enclosure | 2-way active, dual front ports |
| Inputs | XLR and RCA; Ethernet for control |
| Spinorama Preference Score | 3.02 |
| Spinorama Preference Score with Perfect Sub | 5.43 |
| Weight | 12.8 lbs (5.8 kg) each |
- Links
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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 6.07 standalone and 7.15 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 →
| Amplifier Power | 400W RMS each |
|---|---|
| Bass Extension (-10dB) | approximately 22.6Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 30Hz (measured, spinorama.org) |
| Bluetooth Codecs | SBC, AAC |
| Dimensions | 6.6 x 6.2 x 8.6 in each |
| Drivers | One aluminum full-range driver; two aluminum bass drivers |
| Inputs | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack |
| Maximum SPL | 98dB at 1m each (manufacturer specified) |
| Spinorama Preference Score | 6.07 |
| Spinorama Preference Score with Perfect Sub | 7.15 |
| Weight | 9.5 lbs (4.3 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- 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
- Devialet Phantom II 98 dB vs Genelec 8030C
- See all 37 comparisons