Short answer: the KEF LSX II LT. It ranks #36 of 108 powered bookshelf speakers by sound quality (rated 4.0/5) at $749.99 and is still sold new; the PreSonus Eris E5 ranks #77 (rated 3.3/5) and is discontinued, so it is only an option used. The PreSonus Eris E5’s replacement, the PreSonus Eris Studio 5, is rated 3.6/5 at $299.98.
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. It is rated higher for sound quality, and the PreSonus Eris E5 is discontinued, so it is only available used.
Looking for alternatives? See the complete Powered Home rankings.
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Specifications Side By Side
| KEF LSX II LT | PreSonus Eris E5 | |
|---|---|---|
| Price | $749.99 per pair | $186.98 per pair Discontinued |
| Ranked | #36 of 108 in Medium Size Powered Bookshelf Speakers | #77 of 108 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 | Yes | 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 | 4.81 | - |
| Spinorama Preference Score with Perfect Sub | 7.03 | - |
| 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) |
| Bluetooth Version | 5.0 | - |
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