Short answer: the KEF LSX II LT. It ranks #20 of 42 powered bookshelf speakers by sound quality at $600; the Vanatoo Transparent One Encore Plus ranks #24 and costs $699.99, so there is not much of a tradeoff to weigh.
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.
On the Vanatoo Transparent One Encore Plus side: Smooth, relatively flat on-axis response instead of the pronounced mid-bass-and-treble “V curve” common in this size class, which tends to cause listener fatigue over long sessions. Set against that: A slight sibilance/edge in the 4-6 kHz lower-treble region stood out to the reviewer as mildly fatiguing, though a single band of parametric EQ (about -2dB) fixed it.
Buy the KEF LSX II LT. It ranks higher for sound quality than the Vanatoo Transparent One Encore Plus and costs less, so there is no real case for the other one.
Specifications Side By Side
| KEF LSX II LT | Vanatoo Transparent One Encore Plus | |
|---|---|---|
| Price | $600.00 | $699.99 |
| Ranked | #20 of 42 in Medium Size Powered Bookshelf Speakers | #24 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) | 10"H x 6.5"W x 8"D (254 x 165 x 203mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | USB, Optical, Coax, Analog, Bluetooth |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 5.25" aluminum-cone woofer with XBL motor, 5.25" passive radiator (rear), 1" aluminum dome tweeter with waveguide and phase plug |
| Weight | 15 lbs / 6.8 kg | 10.8 lbs (passive unit), 12.2 lbs (active unit) |
| App | No | - |
| Bluetooth | No | - |
| EQ | No | - |
| Output Power | 100w RMS Per Speaker | 240W total (100W + 20W Class D amplifiers per enclosure) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 42Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 34Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Frequency Response | - | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) |
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- Dayton Audio M4 vs Audioengine HD6
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- Vanatoo Transparent One Encore Plus vs Edifier S1000W
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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
Vanatoo Transparent One Encore Plus: $699.99 Amazon
Pros: Smooth, relatively flat on-axis response instead of the pronounced mid-bass-and-treble “V curve” common in this size class, which tends to cause listener fatigue over long sessions. A waveguide plus phase plug on the tweeter helps spread off-axis energy more evenly, giving good vertical consistency. Included remote controls volume, source, and separate treble/mid-bass trim, letting you tune the tonal balance without a computer or app. Subwoofer output with automatic 80/125 Hz crossover engagement when a sub is connected. Extensive wired inputs: USB, optical, coax, and analog, plus Bluetooth. 240W total power is enough headroom for near-field desktop use or a small-to-medium living room.
Cons: A slight sibilance/edge in the 4-6 kHz lower-treble region stood out to the reviewer as mildly fatiguing, though a single band of parametric EQ (about -2dB) fixed it; toeing the speakers off-axis reduces but doesn’t eliminate it. A minor scoop in the 1-2 kHz mid-range is audible in A/B comparison but not problematic on its own. No HDMI input, a drawback if you want to use these as TV speakers via ARC. Like most stand-mount speakers this size, real output below about 40 Hz needs a subwoofer - the reviewer recommends pairing one regardless of use case just to take headroom pressure off the mains.
Full Vanatoo Transparent One Encore Plus review and specifications →
| Bass Extension (-10dB) | 34Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 42Hz (measured, Erin's Audio Corner) |
| Dimensions | 10"H x 6.5"W x 8"D (254 x 165 x 203mm) |
| Drivers | 5.25" aluminum-cone woofer with XBL motor, 5.25" passive radiator (rear), 1" aluminum dome tweeter with waveguide and phase plug |
| Frequency Response | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) |
| Inputs | USB, Optical, Coax, Analog, Bluetooth |
| Output Power | 240W total (100W + 20W Class D amplifiers per enclosure) |
| Weight | 10.8 lbs (passive unit), 12.2 lbs (active unit) |
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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- See all 21 comparisons