Short answer: the KEF LSX II LT if sound quality matters most, the Edifier R1700BT if price matters most. The KEF LSX II LT ranks #35 of 100 powered bookshelf speakers, rated 4.0/5, at $549.99. The Edifier R1700BT ranks #84, rated 3.2/5, at $169.99, $380 cheaper.
The KEF LSX II LT is the better-sounding pick. 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.
What the Edifier R1700BT does well: A compact powered pair with analog and Bluetooth connectivity for uncomplicated desktop listening. The tradeoff: Listening impressions suggest a bass-and-treble-forward balance rather than strict neutrality.
Buy the KEF LSX II LT if sound quality is the priority over the price, or the Edifier R1700BT if the price is the priority over sound quality.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| KEF LSX II LT | Edifier R1700BT | |
|---|---|---|
| Price | $549.99 per pair | $169.99 per pair |
| Ranked | #35 of 100 in Medium Size Powered Bookshelf Speakers | #84 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”H x 6.1”W x 8.4”D (254 x 154.9 x 213.4 mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | Bluetooth, RCA Input |
| Outputs | RCA Subwoofer | None |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 4” (102mm) woofer |
| Weight | 15 lbs (6.8 kg) | 14.6 lbs (6.6 kg) |
| App | No | No |
| Bluetooth | Yes | Yes |
| EQ | No | No |
| Amplifier Power | 100w RMS Per Speaker | 66w RMS Per Speaker |
| 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 | - |
| Spinorama Preference Score with Perfect Sub | 7.03 | - |
| Subwoofer Output | Yes | - |
| XLR Input | No | No |
| 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) | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Bluetooth Version | - | 5.1 |
| Bluetooth Codecs | - | SBC (inferred; additional codecs unverified) |
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 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
Edifier R1700BT: $169.99 per pair Amazon eBay
Pros: A compact powered pair with analog and Bluetooth connectivity for uncomplicated desktop listening. Its self-contained design avoids the need for a separate amplifier.
Cons: Listening impressions suggest a bass-and-treble-forward balance rather than strict neutrality. Its analog and Bluetooth connections are less convenient for sources that require optical or HDMI input.
Full Edifier R1700BT review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 66w RMS Per Speaker |
| App | No |
| Aux Input | No |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.1 |
| Coaxial Input | No |
| Dimensions | 10”H x 6.1”W x 8.4”D (254 x 154.9 x 213.4 mm) |
| Drivers | 4” (102mm) woofer |
| EQ | No |
| Frequency Response | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Bluetooth, RCA Input |
| Optical Input | No |
| Outputs | None |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Weight | 14.6 lbs (6.6 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- DSAUDIO.review: DSAUDIO.review Edifier MR4 vs Edifier R1700BT sound.DEMO More from DSAUDIOreview →
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- DSAUDIO.review: Edifier R1280DB vs Edifier R1700BT Sound Demo w/ Bass Test
- DSAUDIO.review: Edifier R1280DBs vs Edifier R1700BTs Sound Comparison
- DSAUDIO.review: Edifier R1700BT vs Edifier R2000DB Sound Demo
- DSAUDIO.review: DSAUDIO.review Edifier D12 vs Edifier R1700BT sound.DEMO
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