Short answer: the KEF LSX II LT if sound quality matters most, the Adam Audio T5V if price matters most. The KEF LSX II LT ranks #26 of 64 powered bookshelf speakers at $449.99. The Adam Audio T5V ranks #28 at $239.99, $210 cheaper.
On the Adam Audio T5V side: Better than the HS5 in terms of vocals detail and better low end. Set against that: Elevated, slightly uneven top end from the AMT tweeter, shared with Adam’s other T-series monitors - the rear treble trim only tilts.
The case for the KEF LSX II LT: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange. The tradeoff: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker.
Buy the Adam Audio T5V when the price outweighs sound quality for you, and the KEF LSX II LT when sound quality outweighs the price instead.
Specifications Side By Side
| Adam Audio T5V | KEF LSX II LT | |
|---|---|---|
| Price | $479.98 per pair | $449.99 per pair |
| Ranked | #28 of 64 in Medium Size Powered Bookshelf Speakers | #26 of 64 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) | 55Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) | 46Hz (measured, Erin’s Audio Corner) |
| Dimensions | 11.7"H x 7"W x 11.7"D (297.2 x 177.8 x 297.2 mm) | 9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm) |
| Frequency Response | 58Hz - 24kHz (-3dB) (Manufacturer specified) | - |
| Inputs | XLR, RCA | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Weight | 12.6 lbs / 5.7 kg each | 15 lbs / 6.8 kg |
| Drivers | 5" (127mm) woofer | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| App | No | No |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | No |
| Output Power | 70w Per Speaker | 100w RMS Per Speaker |
| Outputs | - | RCA Subwoofer |
| Sensitivity | - | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
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Prices on this page were last checked September 11, 2026 at 8:40 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
Adam Audio T5V: $479.98 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.
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 →
| 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)
- 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
KEF LSX II LT: $449.99 per pair Amazon eBay
Pros: The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Erin’s measurements give preference scores of 3.93 standalone and 6.16 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system.
Cons: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors. The existing review finds bass compression around 88-92dB/1m and rising distortion at higher levels, so the small drivers suit close listening rather than a large room. This LT version has no analog input; a turntable cannot plug straight into it.
Full KEF LSX II LT review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 46Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| Dimensions | 9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm) |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| EQ | No |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Output Power | 100w RMS Per Speaker |
| Outputs | RCA Subwoofer |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin's Audio Corner) |
| Weight | 15 lbs / 6.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Transform Your Sound System with the KEF LSX II LT Speaker More from Erin’s Audio Corner →
- Erin’s Audio Corner Website: KEF LSX II LT
- Erin’s Audio Corner Measurements (spinorama.org)
- Jasper Tech: Best Desktop Computer Speakers for Every Budget – 2026 More from Jasper Tech →
- Jasper Tech: Best Bookshelf Speakers For TV & Gaming - 2025
- Jasper Tech: Best Powered Bookshelf Speakers for Every Budget - 2025
- Head-to-Head Comparisons