Short answer: the Devialet Phantom II 98 dB for better sound quality, the Adam Audio T5V for the lower price. The Devialet Phantom II 98 dB ranks #10 of 64 powered bookshelf speakers at $2998. The Adam Audio T5V ranks #12 at $239.99, $2758.01 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 matters more than sound quality. Buy the Devialet Phantom II 98 dB if sound quality matters more than the price.
Specifications Side By Side
| Adam Audio T5V | Devialet Phantom II 98 dB | |
|---|---|---|
| Price | $239.99 | $2,998/pair |
| Ranked | #12 of 64 in Medium Size Powered Bookshelf Speakers | #10 of 64 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 lb each |
| Drivers | 5" (127mm) woofer | One aluminum full-range driver; two aluminum bass drivers |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| Output Power | 70w Per Speaker | 400W RMS each |
| Max SPL | - | 98dB at 1m each |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL 305P MKII vs KEF LS50 Wireless II
- Kali Audio SM-5 vs JBL 305P MKII
- Yamaha HS5 vs KEF LS50 Wireless II
- Adam Audio T5V vs KEF LS50 Wireless II
- Kali Audio SM-5 vs Adam Audio T5V
Prices on this page were last checked August 25, 2026 at 6:19 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Adam Audio T5V: $239.99 Amazon eBay
Pros: Better than the HS5 in terms of vocals detail and better low end.
Cons: 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.
Full Adam Audio T5V review and specifications →
| 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 |
| Output Power | 70w Per Speaker |
| 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)
- Reddit Search for Adam Audio T5V Review
- Head-to-Head Comparisons
- Adam Audio T5V vs JBL 305P MKII
- Adam Audio T5V vs Yamaha HS5
- Adam Audio T5V vs Vanatoo Transparent Zero Plus
- Adam Audio T5V vs Kali Audio IN-5
- Adam Audio T5V vs Genelec 8320A
- Adam Audio T5V vs Kali LP-UNF
- Adam Audio T5V vs KEF LS50 Wireless II
- Adam Audio T5V vs Neumann KH80 DSP
- See all 63 comparisons
Devialet Phantom II 98 dB: $2,998/pair Devialet eBay
Pros: 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.
Cons: 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.
Full Devialet Phantom II 98 dB review and specifications →
| Bass Extension (-10dB) | approximately 22.6Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 30Hz (measured, spinorama.org) |
| 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 |
| Max SPL | 98dB at 1m each |
| Output Power | 400W RMS each |
| Weight | 9.5 lb 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 Kali LP-UNF
- Devialet Phantom II 98 dB vs Yamaha HS5
- Devialet Phantom II 98 dB vs Neumann KH80 DSP
- Devialet Phantom II 98 dB vs Kali Audio IN-5
- Devialet Phantom II 98 dB vs IK Multimedia iLoud MTM MKII
- Devialet Phantom II 98 dB vs KEF LSX II LT
- Devialet Phantom II 98 dB vs Edifier S2000MKIII
- See all 10 comparisons