Short answer: the KEF LS50 Wireless II for better sound quality, the Presonus Eris E5 for the lower price. The KEF LS50 Wireless II ranks #16 of 64 powered bookshelf speakers at $2999. The Presonus Eris E5 ranks #39 at $109.99, $2889.01 cheaper.
What the Presonus Eris E5 offers: Rated 3.8 in the SpeakerRanking database. Watch for: More HiFi sounding than the HS5 and not quite as detailed, although with deeper bass and a more fun listen.
What the KEF LS50 Wireless II offers: Uni-Q coincident driver array (130mm aluminum woofer with a 25mm MAT dome tweeter mounted at its acoustic center) gives excellent, consistent off-axis dispersion, measuring the tightest directivity spread of this batch (directivity_spdi_stddev 3.96) alongside a smooth listening-window response (smoothness_listening_window 0.375, aad_on_axis 0.343). Bass extends to a genuinely deep 51.3Hz at -3dB / 41.5Hz at -10dB for a compact standmount, backed by a bi-amped 280W (LF) + 100W (HF) design. One of the most complete input sets in its class: HDMI eARC, optical, coaxial, RCA, Ethernet, AirPlay 2, Chromecast, Roon Ready, and Spotify/Tidal Connect, so it can replace a full receiver-based setup for TV, turntable, and streaming use. Watch for: Primary/Secondary architecture means one speaker handles every input while the other depends on a wireless or wired Ethernet link back to it - placement is less flexible than a fully symmetric pair. No mic-based automatic room correction, only fixed placement EQ presets in the KEF Connect app. Bass alignment Q (lfq 0.676) sits toward the higher end of typical ported values. At $2,999.99/pair it’s roughly double the price of KEF’s own smaller LSX II.
Buy the Presonus Eris E5 if the price matters more than sound quality. Buy the KEF LS50 Wireless II if sound quality matters more than the price.
Specifications Side By Side
| Presonus Eris E5 | KEF LS50 Wireless II | |
|---|---|---|
| Price | $109.99 | $2,999.00 |
| Ranked | #39 of 64 in Medium Size Powered Bookshelf Speakers | #16 of 64 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 10.2"H x 7"W x 7.7"D (259.1 x 177.8 x 195.6 mm) | 12" x 7.9" x 12.2" (305 x 200 x 311 mm) (12.0 x 7.9 x 12.2 in) each |
| Frequency Response | 53Hz - 22kHz (Manufacturer specified) | 45Hz - 28kHz ±3dB |
| Inputs | TRS, XLR, RCA | HDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out |
| Weight | 10.1 lbs / 4.6 kg each | 44.3 lbs / 20.1 kg (44.3 lb) for the pair |
| Drivers | 5" (127mm) woofer | Uni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter |
| App | No | KEF Connect (placement EQ presets, source selection, firmware updates) |
| Bluetooth | No | Yes, 4.2 |
| EQ | Yes (Room adjustment) | Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction |
| Output Power | 80w Per Speaker | 280W (LF) + 100W (HF) per speaker, bi-amped |
| Bass Extension (-10dB) | - | 41.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | - | 51.3Hz (measured, spinorama.org) |
| Max SPL | - | 108dB at 1m |
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Prices on this page were last checked August 25, 2026 at 6:19 AM 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
Presonus Eris E5: $109.99 Amazon eBay
Cons: More HiFi sounding than the HS5 and not quite as detailed, although with deeper bass and a more fun listen.
Full Presonus Eris E5 review and specifications →
| App | No |
|---|---|
| Bluetooth | 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) |
| Inputs | TRS, XLR, RCA |
| Output Power | 80w Per Speaker |
| Weight | 10.1 lbs / 4.6 kg each |
- 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: 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
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- Reddit Search for Presonus Eris E5 Review
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KEF LS50 Wireless II: $2,999.00 Amazon KEF Crutchfield eBay
Pros: Uni-Q coincident driver array (130mm aluminum woofer with a 25mm MAT dome tweeter mounted at its acoustic center) gives excellent, consistent off-axis dispersion, measuring the tightest directivity spread of this batch (directivity_spdi_stddev 3.96) alongside a smooth listening-window response (smoothness_listening_window 0.375, aad_on_axis 0.343). Bass extends to a genuinely deep 51.3Hz at -3dB / 41.5Hz at -10dB for a compact standmount, backed by a bi-amped 280W (LF) + 100W (HF) design. One of the most complete input sets in its class: HDMI eARC, optical, coaxial, RCA, Ethernet, AirPlay 2, Chromecast, Roon Ready, and Spotify/Tidal Connect, so it can replace a full receiver-based setup for TV, turntable, and streaming use.
Cons: Primary/Secondary architecture means one speaker handles every input while the other depends on a wireless or wired Ethernet link back to it - placement is less flexible than a fully symmetric pair. No mic-based automatic room correction, only fixed placement EQ presets in the KEF Connect app. Bass alignment Q (lfq 0.676) sits toward the higher end of typical ported values. At $2,999.99/pair it’s roughly double the price of KEF’s own smaller LSX II.
Full KEF LS50 Wireless II review and specifications →
| App | KEF Connect (placement EQ presets, source selection, firmware updates) |
|---|---|
| Bass Extension (-10dB) | 41.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 51.3Hz (measured, spinorama.org) |
| Bluetooth | Yes, 4.2 |
| Dimensions | 12" x 7.9" x 12.2" (305 x 200 x 311 mm) (12.0 x 7.9 x 12.2 in) each |
| Drivers | Uni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter |
| EQ | Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction |
| Frequency Response | 45Hz - 28kHz ±3dB |
| Inputs | HDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out |
| Max SPL | 108dB at 1m |
| Output Power | 280W (LF) + 100W (HF) per speaker, bi-amped |
| Weight | 44.3 lbs / 20.1 kg (44.3 lb) for the pair |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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