Short answer: the KEF LSX II LT. It ranks #36 of 105 powered bookshelf speakers by sound quality (rated 4.0/5) at $699.99 and is still sold new; the Midiplus MI5 II ranks #94 (rated 3.0/5) and is discontinued, so it is only an option used. The Midiplus MI5 II’s replacement, the Midiplus MI5 II V2, is rated 3.1/5.
The KEF LSX II LT is the more accurate choice. 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 2.24 for the Midiplus MI5 II. Watch for: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors.
What the Midiplus MI5 II does well: Balanced inputs, Bluetooth and a powered-pair format offer useful connectivity. It keeps a wired aux input, which the KEF LSX II LT lacks. The tradeoff: The 2.24 standalone and 4.53 ideal-subwoofer scores show significant problems above the bass region.
Buy the KEF LSX II LT. It is rated higher for sound quality and still sold new, while the Midiplus MI5 II is discontinued.
Want more options? Browse the full Powered Home rankings.
Specifications Side By Side
| KEF LSX II LT | Midiplus MI5 II | |
|---|---|---|
| Price | $699.99 per pair | $169 per pair Discontinued |
| Ranked | #36 of 105 in Medium Size Powered Bookshelf Speakers | #94 of 105 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) | 10.1H x 6.7W x 9.4D in |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | TRS, RCA, 3.5mm, Bluetooth |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 1-inch silk tweeter, 5-inch fiberglass woofer |
| Weight | 15 lbs (6.8 kg) | 9.1 lbs (4.14 kg) |
| App | No | - |
| Bluetooth | Yes | Yes |
| EQ | No | - |
| Amplifier Power | 100w RMS Per Speaker | 100W RMS per pair |
| 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 | 2.24 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 4.53 |
| Subwoofer Output | Yes | - |
| XLR Input | No | No |
| 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-25kHz |
| Enclosure | - | Powered 2-way rear-ported |
| Maximum SPL | - | 103dB |
Related Speaker Comparisons
How KEF LSX II LT compares with other leading options:
- KEF LSX II LT vs Genelec 8331A
- KEF LSX II LT vs Neumann KH120 MKII
- 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
Midiplus MI5 II: $169 per pair Discontinued eBay
Newer model: the Midiplus MI5 II V2, ranked higher, estimated 3.1/5.
Same family: the Midiplus MI3 II (smaller bookshelf, rated 2.4/5).
Pros: Balanced inputs, Bluetooth and a powered-pair format offer useful connectivity. The measured -3dB point is around 54Hz, so it reaches lower in the bass than some compact monitors.
Cons: The 2.24 standalone and 4.53 ideal-subwoofer scores show significant problems above the bass region. A large 9.4dB midrange response span and listening-window narrow-band deviation of 0.644 indicate substantial coloration even though the overall response slope is fairly mild. A subwoofer cannot fix those irregularities. Amplifier-power specifications do not establish clean output. Discontinued.
Full Midiplus MI5 II review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W RMS per pair |
| Aux Input | Yes |
| Bluetooth | Yes |
| Coaxial Input | No |
| Dimensions | 10.1H x 6.7W x 9.4D in |
| Drivers | 1-inch silk tweeter, 5-inch fiberglass woofer |
| Enclosure | Powered 2-way rear-ported |
| Frequency Response | 50Hz-25kHz |
| HDMI Input | No |
| Inputs | TRS, RCA, 3.5mm, Bluetooth |
| Maximum SPL | 103dB |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 2.24 |
| Spinorama Preference Score with Perfect Sub | 4.53 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 9.1 lbs (4.14 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Midiplus MI5 II vs Edifier R1280T
- Midiplus MI5 II vs Edifier R1280DB
- Midiplus MI5 II vs Midiplus MI5 II V2
- Midiplus MI5 II vs Fluid Audio FX50 V2
- Midiplus MI5 II vs Edifier R1700BT
- Midiplus MI5 II vs Edifier S1000MKII
- Midiplus MI5 II vs Edifier MR5
- Midiplus MI5 II vs Presonus Eris E5
- See all 18 comparisons