Short answer: the Presonus Eris E5. It ranks #10 of 24 powered bookshelf speakers at $109.99; the KEF LSX II LT ranks #17 and costs $449.99, so there is not much of a tradeoff to weigh.
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 if the price matters more than the ranking. Buy the Presonus Eris E5 if the ranking matters more than the price.
Specifications Side By Side
| KEF LSX II LT | Presonus Eris E5 | |
|---|---|---|
| Price | $449.99 | $109.99 |
| Ranked | #17 of 24 in Medium Size Powered Bookshelf Speakers | #10 of 24 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 7.0"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) |
| Output Power | 100w RMS Per Speaker | 80w Per Speaker |
| Frequency Response | - | 53Hz - 22kHz (Manufacturer specified) |
The Two Speakers In Full
KEF LSX II LT: $449.99 Amazon
Pros: 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. The KEF Connect app provides genuinely useful DSP control: desk/wall boundary compensation, adjustable bass contour (standard/less/extra), treble trim, and subwoofer integration, letting you tune the sound to wherever it’s placed. Distortion at a moderate 86dB looks good for the speaker’s compact size. Tonal profile stays consistent from 0° to 30° off-axis, so side-seat listeners hear essentially the same balance as someone centered. Extensive connectivity for its size: HDMI, USB, optical, sub output, plus Wi-Fi/Bluetooth. Clearly outperformed the reviewer’s soundbars, including ones bundled with their own subwoofers, as a TV audio replacement.
Cons: 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. F3 of 55Hz and F10 of 46Hz mean it loses much of its bass by around 50Hz; a subwoofer (controllable through the same app) is needed for real low end. Diffraction dips appear around 4-5kHz and again near 8kHz, likely tied to the tweeter housing or surround, giving a mild reduction in treble attack and sibilance. A possible port or enclosure resonance shows up around 800Hz in the rear-radiation measurements, though the reviewer wasn’t certain of the exact cause or whether it’s audible. No analog input on this LT variant, so a turntable can’t be connected directly - only the pricier standard LSX II model includes one.
| App | No |
|---|---|
| Bluetooth | 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 |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Output Power | 100w RMS Per Speaker |
| Outputs | RCA Subwoofer |
| Weight | 15 lbs / 6.8 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
Presonus Eris E5: $109.99 Amazon
Cons: More HiFi sounding than the HS5 and not quite as detailed, although with deeper bass and a more fun listen.
| App | No |
|---|---|
| Bluetooth | No |
| Dimensions | 10.2"H x 7.0"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) |
| Inputs | TRS, XLR, RCA |
| Output Power | 80w Per Speaker |
| Weight | 10.1 lbs / 4.6 kg each |
- Reviews, Comparisons and Sound Samples
- DSAUDIO.review: Adam Audio T5V vs Presonus Eris E5 5 Track Comparison
- DSAUDIO.review: Yamaha HS5 vs Presonus Eris E5 Sound Demo
- DSAUDIO.review: Fluid Audio F5 vs Presonus Eris E5 Sound & Frequency Response Comparison
- DSAUDIO.review: M-Audio BX5 D3 vs Presonus Eris E5 5 Track Comparison
- DSAUDIO.review: PreSonus Eris E5 XT vs PreSonus Eris E5 (new vs old) Sound & Frequency Response Comparison
- DSAUDIO.review: JBL 305P MKII vs PreSonus Eris E5 6-Track Comparison
- DSAUDIO.review: Mackie CR5 BT vs Presonus Eris E5 Sound Demo w/ Bass Test
- 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
- Presonus Eris E5 vs KRK Rokit 5 G4
- Presonus Eris E5 vs Yamaha HS5
- Presonus Eris E5 vs Presonus Eris E5 XT
- Presonus Eris E5 vs Adam Audio T5V
- Presonus Eris E5 vs JBL 305P MKII
- Presonus Eris E5 vs Focal Alpha 50 EVO
- Presonus Eris E5 vs Edifier S2000MKIII
- Presonus Eris E5 vs Edifier S1000W
- See all 14 comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.