Short answer: the Devialet Phantom II 98 dB if sound quality matters most, the Adam Audio T5V if price matters most. The Devialet Phantom II 98 dB ranks #9 of 65 powered bookshelf speakers at $2998. The Adam Audio T5V ranks #28 at $230, $2768 cheaper.
What the Adam Audio T5V offers: Better than the HS5 in terms of vocals detail and better low end. Watch for: Elevated, slightly uneven top end from the AMT tweeter, shared with Adam’s other T-series monitors - the rear treble trim only tilts the response rather than flattening it. Distortion, while better controlled than most speakers in this price range, isn’t reference quality.
What the Devialet Phantom II 98 dB offers: Exceptional bass for its tiny sealed enclosure measures 30Hz at -3dB, 25.8Hz at -6dB, and 22.4Hz at -12dB, with a well-damped 0.302 low-frequency Q. The 2.58 sound-power directivity-index standard deviation indicates broad, consistent dispersion, and preference scores reach 6.07 without a subwoofer and 7.15 with one. Each speaker integrates amplification, Wi-Fi, AirPlay 2, Spotify Connect, Roon, Bluetooth, Ethernet, and optical/analog input. Watch for: The medium-quality manufacturer measurement has a 2.3dB reference band and 0.590dB on-axis average absolute deviation, good rather than class-leading linearity. Stereo requires two individually powered network speakers and costs nearly $3,000; maximum output is rated at 98dB at 1m per speaker, and the all-in-one architecture offers less serviceability and system flexibility than conventional monitors.
Buy the Adam Audio T5V if the price is the priority over sound quality, or the Devialet Phantom II 98 dB if sound quality is the priority over the price.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Adam Audio T5V | Devialet Phantom II 98 dB | |
|---|---|---|
| Price | $460 per pair | $2,998 per pair |
| Ranked | #28 of 65 in Medium Size Powered Bookshelf Speakers | #9 of 65 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) | 30Hz (measured, spinorama.org) |
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) | approximately 22.6Hz (measured, spinorama.org) |
| Dimensions | 11.7"H x 7"W x 11.7"D (297.2 x 177.8 x 297.2 mm) | 6.6 x 6.2 x 8.6 in each |
| Frequency Response | 58Hz - 24kHz (-3dB) (Manufacturer specified) | - |
| Inputs | XLR, RCA | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack |
| Weight | 12.6 lbs (5.7 kg) each | 9.5 lbs (4.3 kg) each |
| Drivers | 5" (127mm) woofer | One aluminum full-range driver; two aluminum bass drivers |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 70w Per Speaker | 400W RMS each |
| Spinorama Preference Score | 3.74 | 6.07 |
| Spinorama Preference Score with Perfect Sub | 6.11 | 7.15 |
| 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:
- Neumann KH80 DSP vs Devialet Phantom II 98 dB
- JBL 305P MKII vs Devialet Phantom II 98 dB
- IK Multimedia iLoud MTM MKII vs Devialet Phantom II 98 dB
- Kali Audio IN-5 vs Devialet Phantom II 98 dB
- KEF LSX II LT vs Devialet Phantom II 98 dB
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 T5V: $460 per pair Amazon eBay
Pros: ASR’s data shows a small 2.0dB span from 300Hz to 5kHz, a -3dB point around 59Hz, and scores of 3.74 standalone and 6.11 with an ideal subwoofer. It offers useful bass and midrange performance for an affordable studio monitor. Rear tonal trims allow broad placement adjustment. Measured bass extension of 78Hz (-3dB).
Cons: The response rises toward the treble by about 0.56dB per octave, so the small midrange span should not be mistaken for flat full-band response. Upper-frequency unevenness remains, and a shelving control cannot precisely remove every peak. The existing review finds distortion reasonable for the price rather than reference-class; deeper bass and demanding levels still call for more capable hardware.
Full Adam Audio T5V review and specifications →
| Amplifier Power | 70w Per Speaker |
|---|---|
| App | No |
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Dimensions | 11.7"H x 7"W x 11.7"D (297.2 x 177.8 x 297.2 mm) |
| Drivers | 5" (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 58Hz - 24kHz (-3dB) (Manufacturer specified) |
| Inputs | XLR, RCA |
| Spinorama Preference Score | 3.74 |
| Spinorama Preference Score with Perfect Sub | 6.11 |
| Weight | 12.6 lbs (5.7 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- DSAUDIO.review: JBL 305P MKII vs Adam Audio T5V 6-Track Comparison More from DSAUDIOreview →
- DSAUDIO.review: Kali LP-6 vs Adam Audio T5V Sound & Frequency Response Comparison
- DSAUDIO.review: Adam Audio T5V vs Yamaha HS5 5 Track Comparison
- DSAUDIO.review: DSAUDIO.review Adam Audio A5X vs Adam Audio T5V sound.DEMO
- DSAUDIO.review: DSAUDIO.review Focal Alpha 50 EVO vs Adam Audio T5V sound.DEMO
- DSAUDIO.review: Adam Audio T5V vs Presonus Eris E5 5 Track Comparison
- DSAUDIO.review: KRK Rokit 5 G4 RP5G4 vs Adam Audio T5V Sound & Frequency Response Comparison
- DSAUDIO.review: Bright and brighter. PreSonus E5 XT takes on Adam Audio T5V SOUND & FREQUENCY RESPONSE COMPARISON
- DSAUDIO.review: Adam Audio T5V vs Adam Audio T7V Sound & Frequency Response Comparison
- Audio Science Review Measurements (spinorama.org)
- Jasper Tech: Best Desktop Computer Speakers for Every Budget – 2026 More from Jasper Tech →
- Jasper Tech: Are the iLoud Micro Monitor Pro the Best Studio Monitor Speakers for your Home Studio?
- Head-to-Head Comparisons
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 JBL 305P MKII
- Devialet Phantom II 98 dB vs Neumann KH80 DSP
- Devialet Phantom II 98 dB vs IK Multimedia iLoud MTM MKII
- Devialet Phantom II 98 dB vs Kali Audio IN-5
- Devialet Phantom II 98 dB vs KEF LSX II LT
- Devialet Phantom II 98 dB vs Kali LP-UNF
- Devialet Phantom II 98 dB vs Yamaha HS5
- Devialet Phantom II 98 dB vs Edifier S2000MKIII
- See all 10 comparisons