Short answer: the KEF LSX II LT for a wide sweet spot, the IK Multimedia iLoud MTM MKII for higher output. Its coaxial Uni-Q-style driver gives wide, consistent dispersion of about ±60° horizontally and vertically, but its small drivers are SPL-limited, with bass compression around 88-92dB/1m per speaker and multitone distortion crossing 3% near 96dB. The MTM MKII adds 100W per speaker and an ARC mic, though its treble runs about 3dB hot.
The case for the IK Multimedia iLoud MTM MKII: Compact MTM layout (two 3.5” midwoofers flanking a 1” tweeter) powered monitor rated at 100W per speaker with XLR input, sold as a pair with an ARC room-correction microphone included. The tradeoff: Native treble tuning still runs about 3dB hot on-axis; the back-panel -3dB treble switch overcorrects, and roughly -1.5dB via external EQ works better.
On the KEF LSX II LT side: 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. Set against that: 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.
Buy the IK Multimedia iLoud MTM MKII. It is rated higher for sound quality, and saving $320 with the KEF LSX II LT does not make up for the sound-quality gap.
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Specifications Side By Side
| IK Multimedia iLoud MTM MKII | KEF LSX II LT | |
|---|---|---|
| Price | $799.99 per pair | $479.99 per pair |
| Ranked | #17 of 68 in Medium Size Powered Bookshelf Speakers | #27 of 68 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 10.4”H x 5.1”W x 6.3”D (264.2 x 129.5 x 160 mm) | 9.5”H x 6.1”W x 7.1”D (241.3 x 154.9 x 180.3 mm) |
| Frequency Response | 48 Hz - 28 kHz (±2dB) (Manufacturer specified) | 54Hz - 28kHz (±3dB) (Manufacturer specified) |
| Bass Extension (-3dB) | 52.7Hz (measured, Erin’s Audio Corner) | 55Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46.3Hz (measured, Erin’s Audio Corner) | 46Hz (measured, Erin’s Audio Corner) |
| Inputs | XLR | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Drivers | 2x 3.5” (89mm) woofers, 1” silk dome tweeter | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| App | Yes (X-MONITOR speaker emulation) | No |
| Bluetooth | No | Yes |
| EQ | Yes (Room adjustment) | No |
| Amplifier Power | 100w Per Speaker | 100w RMS Per Speaker |
| Weight | 5.5 lbs (2.5 kg) each | 15 lbs (6.8 kg) |
| Maximum SPL | 112.5dB peak (manufacturer specified) | - |
| Spinorama Preference Score | 5.22 | 4.81 |
| Spinorama Preference Score with Perfect Sub | 7.44 | 7.03 |
| XLR Input | Yes | No |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | Yes |
| AES Input | No | No |
| Aux Input | No | No |
| Outputs | - | RCA Subwoofer |
| Sensitivity | - | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Subwoofer Output | - | Yes |
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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
IK Multimedia iLoud MTM MKII: $799.99 per pair Amazon eBay
Older model: the IK Multimedia iLoud MTM (ranked lower, rated 4.1/5).
Pros: Erin’s MKII measurements give a 2.2dB midrange span, a -3dB point around 53Hz, and preference scores of 5.22 standalone and 7.44 with an ideal subwoofer. The compact layout and included calibration microphone suit a close desktop setup. Existing tests show useful room-peak correction and good harmonic-distortion behavior at moderate levels. Measured bass extension of 52.7Hz (-3dB).
Cons: Some excess treble remains in the native tuning. The two-woofer MTM arrangement narrows the vertical listening window, so ear height and orientation matter. Multitone distortion rises strongly when pushed toward 96dB/1m; the review favors moderate listening levels, and a subwoofer does not eliminate all midrange output limits. These are MKII results, not measurements of the original MTM. Treble runs about 3dB hot on-axis; the rear -3dB treble switch overcorrects, and about -1.5dB of external EQ works better.
Full IK Multimedia iLoud MTM MKII review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100w Per Speaker |
| App | Yes (X-MONITOR speaker emulation) |
| Aux Input | No |
| Bass Extension (-10dB) | 46.3Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 52.7Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 10.4”H x 5.1”W x 6.3”D (264.2 x 129.5 x 160 mm) |
| Drivers | 2x 3.5” (89mm) woofers, 1” silk dome tweeter |
| EQ | Yes (Room adjustment) |
| Frequency Response | 48 Hz - 28 kHz (±2dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR |
| Maximum SPL | 112.5dB peak (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.22 |
| Spinorama Preference Score with Perfect Sub | 7.44 |
| TRS Input | No |
| USB Input | No |
| Weight | 5.5 lbs (2.5 kg) each |
| XLR Input | Yes |
- Links
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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)
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