Short answer: the KEF LS50 Wireless II for better sound quality, the Edifier R1700BT for the lower price. The KEF LS50 Wireless II ranks #16 of 64 powered bookshelf speakers at $2999. The Edifier R1700BT ranks #50 at $186.99, $2812.01 cheaper.
What the Edifier R1700BT offers: Rated 3.5 in the SpeakerRanking database. Watch for: more V shaped, not quite as neutral sounding as the Edifier MR4
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 Edifier R1700BT if the price matters more than sound quality. Buy the KEF LS50 Wireless II if sound quality matters more than the price.
If sound quality matters at all to you, skip the Edifier R1700BT. It ranks near the bottom of the 64 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Edifier R1700BT | KEF LS50 Wireless II | |
|---|---|---|
| Price | $186.99 | $2,999.00 |
| Ranked | #50 of 64 in Medium Size Powered Bookshelf Speakers | #16 of 64 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 10"H x 6.1"W x 8.4"D (254 x 154.9 x 213.4 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 | 60 Hz-20 kHz (-3dB) (Manufacturer specified) | 45Hz - 28kHz ±3dB |
| Inputs | Bluetooth, RCA Input | HDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out |
| Outputs | None | - |
| Weight | 14.6 lbs / 6.6 kg | 44.3 lbs / 20.1 kg (44.3 lb) for the pair |
| Drivers | 4" (102mm) 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 | No | Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction |
| Output Power | 66w RMS 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
Edifier R1700BT: $186.99 Amazon eBay
Cons: more V shaped, not quite as neutral sounding as the Edifier MR4
Full Edifier R1700BT review and specifications →
| App | No |
|---|---|
| Bluetooth | No |
| Dimensions | 10"H x 6.1"W x 8.4"D (254 x 154.9 x 213.4 mm) |
| Drivers | 4" (102mm) woofer |
| EQ | No |
| Frequency Response | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Inputs | Bluetooth, RCA Input |
| Output Power | 66w RMS Per Speaker |
| Outputs | None |
| Weight | 14.6 lbs / 6.6 kg |
- Links
- Reviews, Comparisons and Sound Samples
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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
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