Short answer: the Presonus Eris Studio 8 for the higher ranking, the KEF LSX II LT for the lower price. The Presonus Eris Studio 8 ranks #12 of 20 powered bookshelf speakers at $462. The KEF LSX II LT ranks #17 at $449.99, $12.01 cheaper.
On the KEF LSX II LT side: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange. The tradeoff: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker.
The case for the Presonus Eris Studio 8: More natural sounding and less fatiguing than the HS8.
Buy the KEF LSX II LT if the price matters more than the ranking. Buy the Presonus Eris Studio 8 if the ranking matters more than the price.
Specifications Side By Side
| KEF LSX II LT | Presonus Eris Studio 8 | |
|---|---|---|
| Price | $449.99 | $462 |
| Ranked | #17 of 24 in Medium Size Powered Bookshelf Speakers | #12 of 20 in Large 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) | 16.5"H x 9.8"W x 11.7"D (419.1 x 248.9 x 297.2 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 | 8" (203mm) woofer |
| Weight | 15 lbs / 6.8 kg | 22.3 lbs / 10.1 kg each |
| App | No | No |
| Bluetooth | No | No |
| EQ | No | Yes (Room adjustment) |
| Output Power | 100w RMS Per Speaker | 140w Per Speaker |
| Frequency Response | - | 35Hz - 20kHz (Manufacturer specified) |
| DSP | - | No |
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 Studio 8: $462 Amazon
Pros: More natural sounding and less fatiguing than the HS8
| App | No |
|---|---|
| Bluetooth | No |
| DSP | No |
| Dimensions | 16.5"H x 9.8"W x 11.7"D (419.1 x 248.9 x 297.2 mm) |
| Drivers | 8" (203mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 35Hz - 20kHz (Manufacturer specified) |
| Inputs | TRS, XLR, RCA |
| Output Power | 140w Per Speaker |
| Weight | 22.3 lbs / 10.1 kg each |
- Reviews, Comparisons and Sound Samples
- DSAUDIO.review: PreSonus Eris E8 XT vs PreSonus Eris E5 XT Sound & Frequency Response Comparison
- DSAUDIO.review: Yamaha HS8 vs PreSonus Eris E8 XT Sound & Frequency Response Comparison
- DSAUDIO.review: Kali Audio LP-8 vs Presonus Eris E8 XT Sound & Frequency Response Comparison
- DSAUDIO.review: Tannoy Gold 8 vs PreSonus Eris E8 XT Sound & Frequency Response Comparison
- DSAUDIO.review: Focal Alpha 80 vs PreSonus Eris E8 XT Sound & Frequency Response Comparison
- 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.