Short answer: the KEF LSX II LT for better sound quality, the Presonus Eris E5 for the lower price. The KEF LSX II LT ranks #26 of 65 powered bookshelf speakers, rated 4.0/5, at $549.99. The Presonus Eris E5 ranks #49, rated 3.3/5, at $109.99, $440 cheaper.
On the KEF LSX II LT side: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange. Set against that: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker.
Buy the KEF LSX II LT when sound quality outweighs the price for you, and the Presonus Eris E5 when the price outweighs sound quality instead.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| KEF LSX II LT | Presonus Eris E5 | |
|---|---|---|
| Price | $549.99 per pair | $219.98 per pair |
| Ranked | #26 of 65 in Medium Size Powered Bookshelf Speakers | #49 of 65 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 7"W x 7.7"D (259.1 x 177.8 x 195.6 mm) |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | TRS, XLR, RCA |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 5" (127mm) woofer |
| Weight | 15 lbs (6.8 kg) | 10.1 lbs (4.6 kg) each |
| App | No | No |
| Bluetooth | No | No |
| EQ | No | Yes (Room adjustment) |
| Amplifier Power | 100w RMS Per Speaker | 80w 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 | 3.26 | - |
| Spinorama Preference Score with Perfect Sub | 5.62 | - |
| 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 | No |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) | 53Hz - 22kHz (Manufacturer specified) |
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Prices on this page were last checked September 23, 2026 at 11:24 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
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 3.93 standalone and 6.16 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system. 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 | 3.26 |
| Spinorama Preference Score with Perfect Sub | 5.62 |
| 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
Presonus Eris E5: $219.98 per pair Amazon eBay
Pros: Balanced XLR/TRS and RCA inputs plus placement adjustment make the original Eris E5 easy to connect to studio or consumer sources. Existing listening notes describe a fuller low end than some small, bass-light monitors, which may suit casual nearfield listening.
Cons: A fuller bass balance is not necessarily neutral. Placement adjustment is useful, but it does not replace a properly integrated subwoofer for deep-bass monitoring.
Full Presonus Eris E5 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 80w Per Speaker |
| App | No |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 10.2"H x 7"W x 7.7"D (259.1 x 177.8 x 195.6 mm) |
| Drivers | 5" (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 53Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | TRS, XLR, RCA |
| Optical Input | No |
| RCA Input | Yes |
| TRS Input | Yes |
| USB Input | No |
| Weight | 10.1 lbs (4.6 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- DSAUDIO.review: Adam Audio T5V vs Presonus Eris E5 5 Track Comparison More from DSAUDIOreview →
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- DSAUDIO.review: M-Audio BX5 D3 vs Presonus Eris E5 5 Track Comparison
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- DSAUDIO.review: JBL 305P MKII vs PreSonus Eris E5 6-Track Comparison
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- DSAUDIO.review: KRK Rokit 5 RP5G3 vs Presonus E5 Sound Demo w/ Bass Test
- DSAUDIO.review: JBL LSR305 vs Presonus Eris E5 Sound Demo
- DSAUDIO.review: KRK Rokit 5 G4 RP5G4 vs Presonus Eris E5 Sound & Frequency Response Comparison
- Head-to-Head Comparisons
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