Short answer: the KEF LSX II LT. It ranks #26 of 67 powered bookshelf speakers by sound quality, rated 4.0/5, at $479.99. The Edifier MR4.5 ranks #45, rated 3.6/5, at $249.99, $230 cheaper, not enough of a saving to outweigh the sound-quality gap.
What the KEF LSX II LT does well: The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. The catch: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors.
The case for the Edifier MR4.5: Bass reaches about 60Hz at -3dB and 44Hz at -10dB in Erin’s measurements, notably deep for a 4.5-inch desktop monitor and well beyond the smaller MR4. The tradeoff: The response is uneven, with a broad upper-bass bump around 120 to 150Hz, a presence dip of roughly 3dB around 2 to 3kHz and brighter treble above it (listening-window tilt +0.22dB per octave), which holds its preference score to about 3.9 on its own and 6.1 with an ideal subwoofer.
Buy the KEF LSX II LT. It is rated higher for sound quality, and the $230 you would save on the Edifier MR4.5 does not close the gap.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| KEF LSX II LT | Edifier MR4.5 | |
|---|---|---|
| Price | $479.99 per pair | $249.99 per pair |
| Ranked | #26 of 67 in Medium Size Powered Bookshelf Speakers | #45 of 67 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) | 5.5”W x 9.6”H x 9”D (140 x 244 x 229 mm) (active); 140W x 244H x 208D mm (passive) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | Balanced XLR, balanced 6.35mm TRS, RCA, 3.5mm Aux, Bluetooth |
| Outputs | RCA Subwoofer | 3.5mm headphone |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 4.5-inch mid-bass driver + 1-inch silk-dome tweeter (each) |
| Weight | 15 lbs (6.8 kg) | 14.6 lbs (6.63 kg) |
| App | No | Yes (Edifier ConneX) |
| Bluetooth | No | Yes, 6.0 |
| EQ | No | Yes (app EQ, room compensation settings and rear high/low controls) |
| Amplifier Power | 100w RMS Per Speaker | 80W RMS total (Manufacturer specified) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 44Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Spinorama Preference Score | 4.81 | 3.86 (calculated from Erin’s Audio Corner CEA2034 data) |
| Spinorama Preference Score with Perfect Sub | 7.03 | 6.10 (calculated from Erin’s Audio Corner CEA2034 data) |
| Subwoofer Output | Yes | - |
| XLR Input | No | Yes |
| RCA Input | No | Yes |
| TRS Input | No | Yes |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | Yes | No |
| AES Input | No | No |
| Aux Input | No | Yes |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) | 50Hz-40kHz (Manufacturer specified) |
| Bluetooth Version | - | 6.0 |
| Bluetooth Codecs | - | LDAC, SBC |
| Maximum SPL | - | 98dB (Manufacturer specified, 1m) |
| Measurement Source | - | Erin’s Audio Corner |
| Headphone Output | - | Yes |
Related Speaker Comparisons
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Prices on this page were last checked September 26, 2026 at 11:14 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 | No |
| 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
Edifier MR4.5: $249.99 per pair Amazon eBay
Pros: Bass reaches about 60Hz at -3dB and 44Hz at -10dB in Erin’s measurements, notably deep for a 4.5-inch desktop monitor and well beyond the smaller MR4. It connects to nearly anything: balanced XLR and TRS, RCA and 3.5mm aux inputs, Bluetooth 6.0 with LDAC and multipoint, plus a front headphone output. Rear high and low shelving knobs and the ConneX app’s room compensation settings help tune it for desk or wall placement. Measured bass extension of 60Hz (-3dB).
Cons: The response is uneven, with a broad upper-bass bump around 120 to 150Hz, a presence dip of roughly 3dB around 2 to 3kHz and brighter treble above it (listening-window tilt +0.22dB per octave), which holds its preference score to about 3.9 on its own and 6.1 with an ideal subwoofer. Vertical lobing means the tweeter should be aimed at ear height. Compression is already meaningful at 96dB and distortion climbs sharply between 700Hz and 3kHz when pushed, so it suits nearfield desk listening rather than filling a room.
Full Edifier MR4.5 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 80W RMS total (Manufacturer specified) |
| App | Yes (Edifier ConneX) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 44Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes, 6.0 |
| Bluetooth Codecs | LDAC, SBC |
| Bluetooth Version | 6.0 |
| Coaxial Input | No |
| Dimensions | 5.5”W x 9.6”H x 9”D (140 x 244 x 229 mm) (active); 140W x 244H x 208D mm (passive) |
| Drivers | 4.5-inch mid-bass driver + 1-inch silk-dome tweeter (each) |
| EQ | Yes (app EQ, room compensation settings and rear high/low controls) |
| Frequency Response | 50Hz-40kHz (Manufacturer specified) |
| HDMI Input | No |
| Headphone Output | Yes |
| Inputs | Balanced XLR, balanced 6.35mm TRS, RCA, 3.5mm Aux, Bluetooth |
| Maximum SPL | 98dB (Manufacturer specified, 1m) |
| Measurement Source | Erin’s Audio Corner |
| Optical Input | No |
| Outputs | 3.5mm headphone |
| RCA Input | Yes |
| Spinorama Preference Score | 3.86 (calculated from Erin’s Audio Corner CEA2034 data) |
| Spinorama Preference Score with Perfect Sub | 6.10 (calculated from Erin’s Audio Corner CEA2034 data) |
| TRS Input | Yes |
| USB Input | No |
| Weight | 14.6 lbs (6.63 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons