Short answer: the KEF LSX II LT for better sound quality, the Kanto YU6 for the lower price. The KEF LSX II LT ranks #27 of 64 powered bookshelf speakers at $469.99. The Kanto YU6 ranks #53 at $380, $89.99 cheaper.
What the KEF LSX II LT offers: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange, giving wide and consistent dispersion both horizontally and vertically (about ±60° each) - a wide sweet spot for multiple seats or positions. The KEF Connect app provides genuinely useful DSP control: desk/wall boundary compensation, adjustable bass contour (standard/less/extra), treble trim, and subwoofer integration, letting you tune the sound to wherever it’s placed. Distortion at a moderate 86dB looks good for the speaker’s compact size. Tonal profile stays consistent from 0° to 30° off-axis, so side-seat listeners hear essentially the same balance as someone centered. Extensive connectivity for its size: HDMI, USB, optical, sub output, plus Wi-Fi/Bluetooth. Clearly outperformed the reviewer’s soundbars, including ones bundled with their own subwoofers, as a TV audio replacement. Watch for: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker, and multitone distortion crosses the reviewer’s 3% threshold around 96dB - not intended for loud or large-room duty. F3 of 55Hz and F10 of 46Hz mean it loses much of its bass by around 50Hz; a subwoofer (controllable through the same app) is needed for real low end. Diffraction dips appear around 4-5kHz and again near 8kHz, likely tied to the tweeter housing or surround, giving a mild reduction in treble attack and sibilance. A possible port or enclosure resonance shows up around 800Hz in the rear-radiation measurements, though the reviewer wasn’t certain of the exact cause or whether it’s audible. No analog input on this LT variant, so a turntable can’t be connected directly - only the pricier standard LSX II model includes one.
What the Kanto YU6 offers: A popular active desktop pair with a built-in phono preamp, aptX Bluetooth, and dual optical inputs, positioning it as an easy all-in-one desktop or small-room setup. Watch for: ASR’s independent measurement found a very rough on-axis response: an average deviation of 1.007dB and on-axis smoothness of just 0.204, despite the speaker’s popularity, with a moderate -0.09dB per octave downward tilt and predicted in-room smoothness of just 0.28. Bass rolls off early too, with a Harman in-room extension estimate of only 58Hz.
Buy the KEF LSX II LT if sound quality matters more than the price. Buy the Kanto YU6 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Kanto YU6. It ranks near the bottom of the 64 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| KEF LSX II LT | Kanto YU6 | |
|---|---|---|
| Price | $469.99 | $380.00 |
| Ranked | #27 of 64 in Medium Size Powered Bookshelf Speakers | #53 of 64 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm) | 6.9W x 8.1D x 10.7H in each |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | Bluetooth aptX, RCA phono preamp, 2x optical |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 1" silk dome tweeter, 5.25" Kevlar woofer |
| Weight | 15 lbs / 6.8 kg | 11.4 lbs (active), 8.7 lbs (passive) |
| App | No | - |
| Bluetooth | No | - |
| EQ | No | - |
| Output Power | 100w RMS Per Speaker | - |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | - |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Enclosure | - | 2-way active, MDF cabinet |
| Power Output | - | 200W peak Class D (100W RMS total) |
| Country | - | Canada (design) |
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- Neumann KH80 DSP vs Dayton Audio M4
- KEF LSX II LT vs Mackie MR524
- KEF LSX II LT vs Audioengine A5+ Classic
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.
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The Two Speakers In Full
KEF LSX II LT: $469.99 Amazon eBay
Pros: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange, giving wide and consistent dispersion both horizontally and vertically (about ±60° each) - a wide sweet spot for multiple seats or positions. The KEF Connect app provides genuinely useful DSP control: desk/wall boundary compensation, adjustable bass contour (standard/less/extra), treble trim, and subwoofer integration, letting you tune the sound to wherever it’s placed. Distortion at a moderate 86dB looks good for the speaker’s compact size. Tonal profile stays consistent from 0° to 30° off-axis, so side-seat listeners hear essentially the same balance as someone centered. Extensive connectivity for its size: HDMI, USB, optical, sub output, plus Wi-Fi/Bluetooth. Clearly outperformed the reviewer’s soundbars, including ones bundled with their own subwoofers, as a TV audio replacement.
Cons: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker, and multitone distortion crosses the reviewer’s 3% threshold around 96dB - not intended for loud or large-room duty. F3 of 55Hz and F10 of 46Hz mean it loses much of its bass by around 50Hz; a subwoofer (controllable through the same app) is needed for real low end. Diffraction dips appear around 4-5kHz and again near 8kHz, likely tied to the tweeter housing or surround, giving a mild reduction in treble attack and sibilance. A possible port or enclosure resonance shows up around 800Hz in the rear-radiation measurements, though the reviewer wasn’t certain of the exact cause or whether it’s audible. No analog input on this LT variant, so a turntable can’t be connected directly - only the pricier standard LSX II model includes one.
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
- Head-to-Head Comparisons
- KEF LSX II LT vs Dayton Audio M4
- KEF LSX II LT vs Reflector Audio Square Two
- KEF LSX II LT vs Edifier S2000MKIII
- KEF LSX II LT vs Mackie MR524
- KEF LSX II LT vs KRK Classic 5
- KEF LSX II LT vs Sigberg Audio SBS Gen 2
- KEF LSX II LT vs Edifier MR4
- KEF LSX II LT vs HEDD Type 05 A-CORE
- See all 64 comparisons
Kanto YU6: $380.00 Amazon eBay
Pros: A popular active desktop pair with a built-in phono preamp, aptX Bluetooth, and dual optical inputs, positioning it as an easy all-in-one desktop or small-room setup.
Cons: ASR’s independent measurement found a very rough on-axis response: an average deviation of 1.007dB and on-axis smoothness of just 0.204, despite the speaker’s popularity, with a moderate -0.09dB per octave downward tilt and predicted in-room smoothness of just 0.28. Bass rolls off early too, with a Harman in-room extension estimate of only 58Hz.
Full Kanto YU6 review and specifications →
| Country | Canada (design) |
|---|---|
| Dimensions | 6.9W x 8.1D x 10.7H in each |
| Drivers | 1" silk dome tweeter, 5.25" Kevlar woofer |
| Enclosure | 2-way active, MDF cabinet |
| Inputs | Bluetooth aptX, RCA phono preamp, 2x optical |
| Power Output | 200W peak Class D (100W RMS total) |
| Weight | 11.4 lbs (active), 8.7 lbs (passive) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons