Short answer: the KEF LSX II LT for better sound quality, the Neumi BS5P-ARC for the lower price. The KEF LSX II LT ranks #35 of 100 powered bookshelf speakers, rated 4.0/5, at $699.99. The Neumi BS5P-ARC ranks #49, rated 3.8/5, at $219.99, $480 cheaper.
The KEF LSX II LT is the more accurate option. The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Its measured preference score, a predictor of how neutral it sounds, is 4.81 against 3.84 for the Neumi BS5P-ARC. The catch: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors.
The case for the Neumi BS5P-ARC: Erin’s selected measurements give a 2.6dB midrange span and a 7.03 ideal-subwoofer preference score, indicating better tonal performance above the bass than its former near-bottom position suggested. The catch: The standalone score drops to 3.84.
Buy the KEF LSX II LT when sound quality outweighs the price for you, and the Neumi BS5P-ARC when the price outweighs sound quality instead.
Want more options? Browse the full Powered Home rankings.
Specifications Side By Side
| KEF LSX II LT | Neumi BS5P-ARC | |
|---|---|---|
| Price | $699.99 per pair | $219.99 per pair |
| Ranked | #35 of 100 in Medium Size Powered Bookshelf Speakers | #49 of 100 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) | 10.6H x 7.2W x 8.5D in each |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | HDMI ARC, Bluetooth, USB-C, optical, coaxial, RCA analog |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 1” silk dome tweeter with integrated waveguide, 5” poly-cone woofer |
| Weight | 15 lbs (6.8 kg) | 24.9 lbs (11.3 kg) pair |
| App | No | - |
| Bluetooth | Yes | Yes |
| EQ | No | - |
| Amplifier Power | 100w RMS Per Speaker | 75W total (37.5W per channel) |
| 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) | - |
| Spinorama Preference Score | 4.81 | 3.84 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 7.03 |
| Subwoofer Output | Yes | - |
| XLR Input | No | No |
| RCA Input | No | Yes |
| TRS Input | No | No |
| Optical Input | Yes | Yes |
| Coaxial Input | No | Yes |
| USB Input | Yes | Yes |
| HDMI Input | Yes | Yes |
| AES Input | No | No |
| Aux Input | No | No |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) | 50Hz - 20kHz (Typical In-Room) (Manufacturer specified) |
| Enclosure | - | 2-way active |
| Country | - | China |
Related Speaker Comparisons
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- Genelec 8030C vs KEF LSX II LT
- KEF LSX II LT vs Neumann KH80 DSP
- KEF LSX II LT vs Reflector Audio Square Two
Prices on this page were last checked October 9, 2026 at 8:01 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: $699.99 per pair Amazon eBay
Same family: the KEF LSX II (larger bookshelf, estimated 4.1/5), the KEF LS50 Wireless II (larger bookshelf, ranked higher, rated 4.3/5) and the KEF LS60 (floorstanding, rated 4.8/5).
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
Neumi BS5P-ARC: $219.99 per pair Amazon eBay
Older model: the Neumi BS5P (ranked lower, rated 3.8/5).
Pros: Erin’s selected measurements give a 2.6dB midrange span and a 7.03 ideal-subwoofer preference score, indicating better tonal performance above the bass than its former near-bottom position suggested. HDMI ARC makes it a convenient low-cost TV stereo system.
Cons: The standalone score drops to 3.84. The published response reaches -3dB around 113Hz and -6dB around 83Hz, so bass balance is a significant limitation in that measured configuration. It is not the same model or dataset as the original Neumi BS5P. The score alone cannot establish clean output, and a subwoofer should not be assumed to solve crossover or room-integration issues automatically.
Full Neumi BS5P-ARC review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 75W total (37.5W per channel) |
| Aux Input | No |
| Bluetooth | Yes |
| Coaxial Input | Yes |
| Country | China |
| Dimensions | 10.6H x 7.2W x 8.5D in each |
| Drivers | 1” silk dome tweeter with integrated waveguide, 5” poly-cone woofer |
| Enclosure | 2-way active |
| Frequency Response | 50Hz - 20kHz (Typical In-Room) (Manufacturer specified) |
| HDMI Input | Yes |
| Inputs | HDMI ARC, Bluetooth, USB-C, optical, coaxial, RCA analog |
| Optical Input | Yes |
| RCA Input | Yes |
| Spinorama Preference Score | 3.84 |
| Spinorama Preference Score with Perfect Sub | 7.03 |
| TRS Input | No |
| USB Input | Yes |
| Weight | 24.9 lbs (11.3 kg) pair |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons