Short answer: the ADAM Audio T5V. Both are rated 4.0/5 for sound quality (#38 and #36 of 108 powered bookshelf speakers), and the ADAM Audio T5V costs $464 against $749.99 for the KEF LSX II LT, so with nothing between them on sound quality, price settles it.
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. Both are rated the same for sound quality, and it costs $285.99 less than the KEF LSX II LT.
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Prices on this page were last checked November 7, 2026 at 7:34 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 T5V | KEF LSX II LT | |
|---|---|---|
| Price | $464 per pair | $749.99 per pair |
| Ranked | #38 of 108 in Medium Size Powered Bookshelf Speakers | #36 of 108 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 58.6Hz (measured, Audio Science Review) | 55Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 45.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 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) | 54Hz - 28kHz (±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 | Yes |
| EQ | Yes (Room adjustment) | No |
| Amplifier Power | 70w Per Speaker | 100w RMS Per Speaker |
| Spinorama Preference Score | 4.65 | 4.81 |
| Spinorama Preference Score with Perfect Sub | 7.02 | 7.03 |
| XLR Input | Yes | No |
| RCA Input | Yes | No |
| TRS Input | No | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | Yes |
| AES Input | No | No |
| Aux Input | No | No |
| Outputs | - | RCA Subwoofer |
| Sensitivity | - | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Subwoofer Output | - | Yes |
| Bluetooth Version | - | 5.0 |
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