Short answer: the KEF LSX II LT for better sound quality, the Edifier S1000MKII for the lower price. The KEF LSX II LT ranks #20 of 42 powered bookshelf speakers at $600. The Edifier S1000MKII ranks #31 at $499.99, $100.01 cheaper.
What the KEF LSX II LT gets right: 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 catch: 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.
The case for the Edifier S1000MKII: High resolution digital input up to 192khz/24bit. The tradeoff: No independent measurements exist - reviews are limited to informal YouTube sound-comparison videos.
Buy the KEF LSX II LT if sound quality matters more than the price. Buy the Edifier S1000MKII if the price matters more than sound quality.
Specifications Side By Side
| KEF LSX II LT | Edifier S1000MKII | |
|---|---|---|
| Price | $600.00 | $499.99 |
| Ranked | #20 of 42 in Medium Size Powered Bookshelf Speakers | #31 of 42 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) | 13.6"H x 7.6"W x 11.6"D (345.4 x 193 x 294.6 mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | Bluetooth, 2x RCA Input, Digital Optical, Digital Coax |
| Outputs | RCA Subwoofer | None |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 5.5" (140mm) woofer |
| Weight | 15 lbs / 6.8 kg | 37 lbs / 16.8 kg |
| App | No | No |
| Bluetooth | No | No |
| EQ | No | No |
| Output Power | 100w RMS Per Speaker | 60w 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) | - |
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The Two Speakers In Full
KEF LSX II LT: $600.00 Amazon
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 |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- KEF LSX II LT vs Presonus Eris E5
- KEF LSX II LT vs KRK Classic 5
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- KEF LSX II LT vs IK Multimedia iLoud MTM
- KEF LSX II LT vs Edifier MR4
- KEF LSX II LT vs Vanatoo Transparent One Encore Plus
- KEF LSX II LT vs IK Multimedia iLoud MTM MKII
- KEF LSX II LT vs Edifier R1280DB
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Edifier S1000MKII: $499.99 Amazon
Pros: High resolution digital input up to 192khz/24bit. Very close to the S2000MKIII, almost no reason to pay more
Cons: No independent measurements exist - reviews are limited to informal YouTube sound-comparison videos. As one of Edifier’s warmer-tuned lifestyle HiFi speakers, it isn’t voiced for the flat, neutral response of a measurement-verified monitor.
Full Edifier S1000MKII review and specifications →
| App | No |
|---|---|
| Bluetooth | No |
| Dimensions | 13.6"H x 7.6"W x 11.6"D (345.4 x 193 x 294.6 mm) |
| Drivers | 5.5" (140mm) woofer |
| EQ | No |
| Inputs | Bluetooth, 2x RCA Input, Digital Optical, Digital Coax |
| Output Power | 60w RMS Per Speaker |
| Outputs | None |
| Weight | 37 lbs / 16.8 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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