Short answer: the KEF LS50 Wireless II. It ranks #19 of 108 powered bookshelf speakers by sound quality (rated 4.3/5) at $2,999.99 and is still sold new; the Kanto YU6 ranks #41 (rated 3.9/5) and is discontinued, so it is only an option used. The Kanto YU6’s replacement, the Kanto YU6 G2, is rated 3.9/5 at $549.99.
The KEF LS50 Wireless II is the more accurate pick. An all in one wireless stereo system with accurate, consistent sound, HDMI eARC and built in streaming. Its measured preference score, a predictor of how neutral it sounds, is 5.43 against 4.28 for the Kanto YU6. It keeps a wired aux input, which the Kanto YU6 lacks. The tradeoff: The 3.0dB response span is good but not reference-leading, and dispersion still varies with frequency.
The case for the Kanto YU6: A powered bookshelf pair with a phono input, optical, Bluetooth and a remote, a simple multi source system. The catch: Local response variation remains despite the mild overall tilt: the midrange span is 3.8dB and listening-window narrow-band deviation is 0.419.
Buy the KEF LS50 Wireless II. It is rated higher for sound quality and still sold new, while the Kanto YU6 is discontinued.
Want more options? Browse the full Powered Home rankings.
An all in one wireless stereo system with accurate, consistent sound, HDMI eARC and built in streaming.
A powered bookshelf pair with a phono input, optical, Bluetooth and a remote, a simple multi source system.
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Specifications Side By Side
| KEF LS50 Wireless II | Kanto YU6 | |
|---|---|---|
| Price | $2,999.99 per pair | $380.00 per pair Discontinued |
| Ranked | #19 of 108 in Medium Size Powered Bookshelf Speakers | #41 of 108 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 41.5Hz (measured, spinorama.org) | - |
| Bass Extension (-3dB) | 51.3Hz (measured, spinorama.org) | - |
| Inputs | HDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet | Bluetooth aptX, RCA phono preamp, 2x optical |
| Drivers | Uni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter | 1” silk dome tweeter, 5.25” Kevlar woofer |
| App | KEF Connect (placement EQ presets, source selection, firmware updates) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 4.0 |
| EQ | Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction | - |
| Weight | 44.3 lbs (20.1 kg) for the pair | 11.5 lbs (5.2 kg) (active), 8.6 lbs (3.9 kg) (passive) |
| Amplifier Power | 280W (LF) + 100W (HF) per speaker, bi-amped | 200W peak Class D (100W RMS total) |
| Dimensions | 12” x 7.9” x 12.2” (305 x 200 x 311 mm) each | 6.9W x 8.1D x 10.7H in each |
| Frequency Response | 45Hz - 28kHz ±3dB | 50Hz - 20kHz (Manufacturer specified) |
| Maximum SPL | 108dB at 1m (manufacturer specified) | - |
| Spinorama Preference Score | 5.43 | 4.28 |
| Spinorama Preference Score with Perfect Sub | 7.51 | 6.89 |
| Subwoofer Output | Yes | Yes |
| Outputs | RCA subwoofer | Subwoofer |
| XLR Input | No | No |
| RCA Input | No | Yes |
| TRS Input | No | No |
| Optical Input | Yes | Yes |
| Coaxial Input | Yes | No |
| USB Input | No | No |
| HDMI Input | Yes | No |
| AES Input | No | No |
| Aux Input | Yes | No |
| Enclosure | - | 2-way active, MDF cabinet |
| Bluetooth Codecs | - | SBC, aptX |
| Country | - | Canada (design) |
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