Short answer: the Dynaudio LYD 5. It ranks #6 of 100 powered bookshelf speakers by sound quality, rated 4.5/5, at $998. The KEF LSX II LT ranks #35, rated 4.0/5, at $549.99, $448.01 cheaper, a saving that is not big enough to make up the sound-quality gap.
The KEF LSX II LT is the deeper-bass choice. The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Its bass reaches about 55Hz before falling 3dB, against 68Hz for the Dynaudio LYD 5. Watch for: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors.
The Dynaudio LYD 5 is the better-sounding option. ASR’s Klippel data is substantially stronger than a low ranking suggests: 4.72 standalone and 7.38 with an ideal subwoofer, with a 1.9dB span from 300Hz to 5kHz. Watch for: Bass reaches -3dB around 72Hz, so it gives up low-frequency weight to deeper-reaching monitors.
Buy the Dynaudio LYD 5. It is rated higher for sound quality, and saving $448.01 with the KEF LSX II LT does not make up for the sound-quality gap.
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Specifications Side By Side
| KEF LSX II LT | Dynaudio LYD 5 | |
|---|---|---|
| Price | $549.99 per pair | $998 per pair |
| Ranked | #35 of 100 in Medium Size Powered Bookshelf Speakers | #6 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) | 10.2”H x 6.7”W x 8.3”D (260 x 170 x 211 mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | XLR, RCA |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 5” woofer, 28mm soft dome tweeter |
| Weight | 15 lbs (6.8 kg) | 11.9 lbs (5.4 kg) each |
| App | No | No |
| Bluetooth | Yes | No |
| EQ | No | No |
| Amplifier Power | 100w RMS Per Speaker | 100W total (50W LF, 50W HF) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 68Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Audio Science Review) |
| 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 | - |
| XLR Input | No | Yes |
| RCA Input | No | Yes |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | Yes | No |
| HDMI Input | Yes | No |
| AES Input | No | No |
| Aux Input | No | No |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) | 50Hz - 21kHz (Manufacturer specified) |
| DSP | - | No |
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Prices on this page were last checked October 7, 2026 at 9:25 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: $549.99 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
Dynaudio LYD 5: $998 per pair B&H Photo Video eBay
Pros: ASR’s Klippel data is substantially stronger than a low ranking suggests: 4.72 standalone and 7.38 with an ideal subwoofer, with a 1.9dB span from 300Hz to 5kHz. Low listening-window narrow-band deviation of 0.242 supports relatively uncolored midrange reproduction. It is particularly competitive when used with a subwoofer rather than judged only by bass reach. Measured bass extension of 68Hz (-3dB).
Cons: Bass reaches -3dB around 72Hz, so it gives up low-frequency weight to deeper-reaching monitors. The existing review identifies a dip near 1.6kHz, upper-bass emphasis and uneven crossover-region dispersion. These issues and limited deep-bass capability keep it below the leading all-rounders despite its strong bass-normalized score. A subwoofer does not correct upper-frequency directivity errors.
Full Dynaudio LYD 5 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W total (50W LF, 50W HF) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 68Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 10.2”H x 6.7”W x 8.3”D (260 x 170 x 211 mm) |
| Drivers | 5” woofer, 28mm soft dome tweeter |
| EQ | No |
| Frequency Response | 50Hz - 21kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, RCA |
| Optical Input | No |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Weight | 11.9 lbs (5.4 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons