Short answer: the Vanatoo Transparent One Encore Plus for a flat on-axis response, the KEF LSX II LT for dispersion. The Encore Plus stays smooth and relatively flat on-axis instead of the pronounced mid-bass-and-treble V curve, though a slight sibilance in the 4-6 kHz lower treble was fatiguing until about -2dB of parametric EQ fixed it. The LSX II LT spreads wide, about +/-60 degrees each way, but small drivers make it SPL-limited around 88-92dB/1m.
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 Vanatoo Transparent One Encore Plus. It is rated higher for sound quality, and saving $220 with the KEF LSX II LT does not make up for the sound-quality gap.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| KEF LSX II LT | Vanatoo Transparent One Encore Plus | |
|---|---|---|
| Price | $479.99 per pair | $699.99 per pair |
| Ranked | #27 of 68 in Medium Size Powered Bookshelf Speakers | #15 of 68 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” x 6.5” x 8” (254 x 165 x 203 mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | USB, Optical, Coax, Analog, Bluetooth |
| Outputs | RCA Subwoofer | 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 (4.9 kg) (passive unit), 12.1 lbs (5.5 kg) (active unit) |
| App | No | - |
| Bluetooth | Yes | Yes |
| EQ | No | - |
| Amplifier 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) | - |
| Spinorama Preference Score | 4.81 | 5.57 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 7.38 |
| Subwoofer Output | Yes | Yes |
| XLR Input | No | No |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | Yes | Yes |
| Coaxial Input | No | Yes |
| USB Input | Yes | Yes |
| HDMI Input | Yes | No |
| AES Input | No | No |
| Aux Input | No | No |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) |
| Bluetooth Codecs | - | SBC, AAC, aptX, aptX HD |
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Prices on this page were last checked October 2, 2026 at 10:18 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
KEF LSX II LT: $479.99 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 4.81 standalone and 7.03 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system. Horizontal and vertical dispersion both reach about ±60°, giving a broad sweet spot for more than one seat. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 84dB.
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 →
| AES Input | No |
|---|---|
| Amplifier Power | 100w RMS Per Speaker |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes |
| Coaxial Input | 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 |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) |
| HDMI Input | Yes |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Optical Input | Yes |
| Outputs | RCA Subwoofer |
| RCA Input | No |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.81 |
| Spinorama Preference Score with Perfect Sub | 7.03 |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | Yes |
| Weight | 15 lbs (6.8 kg) |
| XLR Input | No |
- 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
Vanatoo Transparent One Encore Plus: $699.99 per pair Amazon eBay
Pros: Erin’s Klippel data combines a small 1.7dB midrange response span with a -3dB point around 44Hz. Scores of 5.57 standalone and 7.38 with an ideal subwoofer make it an attractive standalone system as well as a subwoofer partner. Remote tone controls, multiple digital and analog inputs, and automatic subwoofer crossover engagement simplify setup. Measured bass extension of 42Hz (-3dB).
Cons: A mild 4-6kHz edge and a smaller 1-2kHz recession were audible in the review, so its smooth midrange summary does not mean there is nothing to improve with EQ. No HDMI ARC. Deep bass and louder playback still benefit from a subwoofer; amplifier wattage alone does not establish clean room-filling output.
Full Vanatoo Transparent One Encore Plus review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 240W total (100W + 20W Class D amplifiers per enclosure) |
| Aux Input | No |
| Bass Extension (-10dB) | 34Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 42Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD |
| Coaxial Input | Yes |
| Dimensions | 10” x 6.5” x 8” (254 x 165 x 203 mm) |
| 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) |
| HDMI Input | No |
| Inputs | USB, Optical, Coax, Analog, Bluetooth |
| Optical Input | Yes |
| Outputs | RCA subwoofer |
| RCA Input | No |
| Spinorama Preference Score | 5.57 |
| Spinorama Preference Score with Perfect Sub | 7.38 |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | Yes |
| Weight | 10.8 lbs (4.9 kg) (passive unit), 12.1 lbs (5.5 kg) (active unit) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
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