LS50 Wireless is a complete and fully active music system designed for how high resolution music is now enjoyed. It delivers exceptional sound quality, once only achievable by putting together a system of high quality separate components.
LS50 Wireless 是一款專門為聆聽高清音樂而設計的有源音樂系統。本產品可以提供卓越的音質；這種音質過去只能透過將各種高質素的獨立部件組合起來才能達到。
Astounding Multi-Dimensional Sound
LS50 Wireless delivers a clear, accurate and transparent sound that creates an intense, rich, and multi-dimensional soundstage experience. Made possible from its small enclosures through expert acoustic design and state-of-the-art technologies.
LS50 Wireless 傳遞清晰、準確且通透的聲音，可營造出強烈、豐富的立體聲場聆聽體驗。專業的聲學設計與最新的科技讓這一切在其小巧的音箱中實現。
Cabinet vibration, sound radiation, resonance, and colouration are all eliminated through the seamless integration of the award-winning LS50 speaker's acoustic features. These include the FEA-designed cabinet, Uni-Q driver, constrained layer damping bracing, precision-engineered curved baffle and elliptical flexible sound port.
傳承自 LS50 的血統
Every Spot is Sweet - Uni-Q
Get a three-dimensional sound image wherever you sit, for a sweet spot listening experience anywhere in a room using KEF's patented Uni-Q technology. Now in its 11th generation, it places the tweeter in the acoustic centre of the bass/midrange cone, allowing LS50 Wireless to create a more detailed, accurate and beautifully integrated three-dimensional sound image.
每處都是最佳音質 - Uni-Q
無論坐在那裡，您都可以享受立體的聲音結像。透過 KEF 專利的 Uni-Q 技術，您在房間的每一角落都能聆聽到最佳音質。Uni-Q 技術已經發展到第 11 代，它將高音單元及中低音單元放置於同一軸心，可讓 LS50 Wireless 建立一個更細膩、準確且完美連貫的立體聲音結像。
Crossover Timing Correction
High and low frequencies should hit your ears at exactly the right time. This perfect time alignment was only an ideal case in theory previously, and perfectly accurate sound could only be experienced within a small 'sweet spot'. With LS50 Wireless’ advanced time correcting DSP crossover and the unique sound dispersion abilities of Uni-Q, time corrected accurate sound can be achieved in different types of rooms. This is a feat that cannot be reproduced by any other active speaker.
高頻與低頻本應要同步抵達您的耳朵，以往這只是理論上最理想的情形；而最準確的聲音亦只能在範圍狹小的「最佳聆聽位置」才能聽到。透過 LS50 Wireless 先進的 DSP 數碼音效處理器校正時域以及 Uni-Q 獨特的聲音擴散能力，在不同類型的房間內均可實現完美同步而準確的聲音。這個突破性的技術並非一般有源揚聲器所能及。
Audiophile Grade System Configuration
Audiophile-grade sound means audiophile-grade technologies. LS50 Wireless delivers this with an array of sophisticated components built in. Through expert audio engineering, LS50 Wireless includes an end-to-end 192kHz/24-bit high-resolution digital signal path, dedicated DAC per channel, streaming pre-amplifier, and a 230-watt x2 amplification in a bi-amp dual mono configuration. All factory-optimised.
發燒級的聲音代表採用發燒級 Hi-Fi 的技術。LS50 Wireless 藉著內建一系列精密設計的元件做到這一點。透過專業聲學工程設計，LS50 Wireless 支援最高 192kHz/24-bit 高清數碼傳輸、具備串流前級擴音器、每個聲道有獨立 DAC 解碼器、以及採用雙功放雙單聲道配置的 230 瓦擴音系統。產品出廠時均經過最優化處理。
Every piece of information from a high-resolution music source is reproduced fully and accurately through an end-to-end 192kHz/24-bit high-resolution digital signal path. This creates a signal path from the input to the amplifiers that is completely digital and high resolution.
A standard RJ45 termination for the interconnect cable between speakers and a Cat 6 shielded cable improves bandwidth and performance headroom while rejecting noise and electromagnetic compatibility, ensuring LS50 Wireless sound is consistently high-quality.
來自高清音源的每一項資訊，都會透過端對端 192kHz/24-bit 高清數碼傳輸，完整且準確地呈現，建立一條從輸入到擴音系統都是全數碼的高清傳輸路徑。
揚聲器連接線所採用的標準 RJ45 接頭以及 Cat 6 訊號線，可以改善頻寬及效能提升空間，還能排除雜訊並兼顧電磁兼容性，確保 LS50 Wireless 的音質一直保持在高水平。
Simplicity meets Sophistication
The beauty of the LS50 Wireless is its effortless combination of simplicity and elegance. It is easy to set up and use, yet offers sophisticated sound fit for audiophiles through inspired audio engineering and the Uni-Q driver.
LS50 Wireless 之美在於其簡約與高雅兼具的特色。無論設定及使用都相當容易，加上尖端聲學工程技術及 Uni-Q 單元，為追求極致音效的音樂愛好者帶來細膩的聲音。
KEF LS50 Wireless review & DAR’s Product of the Year 2016
by John H. Darko5 months ago
How transportable is your hifi system? My latest rig flew as a single piece of checked baggage from Hong Kong to Australia and then to the UK before being couriered to Germany. Landing at my door in Berlin however was not a pallet but a single cardboard box. Inside, a pair of standmount loudspeakers, dual mono amplifiers, a D/A converter and wifi/Ethernet streamer.
We’ve seen this kind of thing before from KEF but not even their superb X300A and X300A Wireless models can compete with what we have here.
This is the loudspeaker system that I’ve been hankering for. This is the loudspeaker system that I first caught sight of during a visit to GP Acoustics’ Hong Kong HQ in August (and was asked not to film). This is the loudspeaker system formally introduced by KEF on the coattails of RMAF in October; that’s your primer.
This is the LS50 but not as we know it. Jack Ocklee-Brown and his team of Kent-based engineers have activated this super-popular standmount with bespoke fit amplification, DAC and network streamer and installed the whole lot inside the speaker enclosures.
Inside each speaker sit two amplifiers and two DACs. Digital inputs arrive at the right hand unit with incoming digital signal upsampled to 24bit/192kHz and handed off to the left channel via Ethernet cable.
Cast a casual eye over any audio show coverage: how many rooms full of racked-up separates do we see? And how many rooms feature active loudspeakers? Yup – thought so. “They’ll have to pry my ten box system, cabling and rack from my cold, dead hand!” says the audiophile world nervously.
Another question: how quickly can you unbox your hifi system, piece it together and have it play music? If it’s the LS50 Wireless system, it goes like this: place each speaker on a speaker stand (or credenza), tie ‘em together with the (supplied) Ethernet cable, connect each speaker to a mains power socket and tap the power button on the righthand speaker’s OLED touchscreen. This 21st Century hifi system comes to life with a four-note start-up sound and we are ready to play music in under five minutes.
The fastest and easiest way to get tunes to spill from the LS50 Wireless is from its Bluetooth (4.0) input. Pair and play – anyone can do it, even your Mom. aptX-capable sources like Macbooks, (some) Windows phones and selected Android phones will deliver slightly better sound quality than those that fall back to Bluetooth audio’s more vanilla SBC: iPhones and iPads. Presumably KEF specified this input for convenience and inclusivity. Audiophiles will demand better source quality. Let’s move on up the food chain…
A TOSLINK input means the LS50 Wireless make an ideal choice for elevating a TV’s sound quality; not just to the next level but all the way to the top floor. Rubber feet will keep them secure. Spotify too – many modern Smart TVs have the streaming service baked into their operating system.
If your TV is more Plain Jane – of if you prefer Tidal or Qobuz – consider Apple’s Airplay by setting aside the TOSLINK input for an Apple TV (3rd Gen) or an Airport Express.
Alternatively, go for the best of both worlds: connect a 4th Gen Apple TV to the TV with HDMI and then the TV’s digital audio output to the LS50 Wireless’ TOSLINK socket. Easy.
Computer audiophiles or those with more sophisticated digital audio streamers will likely peg the LS50 Wireless’ USB input (that KEF have labelled ‘PC’) as their preferred hookup point.
Turntablists should feed their phono stage’s output into the LS50’s auxiliary input. Purists should be made aware that all incoming analogue signals are instantly digitised to 24bit/192kHz PCM; how else would the signal be split and the left channel handed over to the other loudspeaker via Ethernet?
Don’t trust the transparency of an ADC? I’d invite you to hear for yourself how even the most basic converter easily captures the differences between cartridges, surface noise and more.
Whatever your source preference, the KEF LS50 Wireless is a complete high-end audio system-in-a-box; one that thumbs its nose at the trial and error of separates compilation. Experience tells us that hooking up different amplifiers to the passive LS50 is a lottery that many audiophiles enjoy in all but expense: assuming we hit the jackpot from the first hand dealt, amplification satisfaction will invariably take our credit cards a long way north of ~US$700 – the delta between the original passive LS50 and its new active cousin.
Designing an amplifier for a passive loudspeaker where impedance swings and sensitivity vary wildly from model to model means a one size fits all approach must account for all manner of downstream unknowns.
By activating the LS50, each internal amplifier’s output has been tailored to precisely fit the driver’s impedance curve.
The KEF LS50 Wireless gives us the equivalent of a dual mono configuration but with a separate amplifier applied to each driver in KEF’s 5.25” concentric (Uni-Q) array: 200wpc of Class D for the mid/bass and 30wpc Class A/B for the tweeter.
Piling on another active advantage, the LS50’s Wireless crossover is stitched together via digital signal processing (DSP), thus side-stepping the potential for phase shift and/or distortion introduced by capacitors and resistors found in passive networks – like that of the standard LS50. This DSP coding has reportedly allowed KEF to juice every last drop of performance from the LS50’s drivers, their elliptical reflex port, the curved front baffle as well as the constrained-layer damped braced cabinet in which the whole shooting match comes together.
In my listening tests, comparing the LS50 Wireless to its passive forerunner dressed in red and juiced by a Peachtree nova300 (with internal DAC) over AudioQuest Rocket 88 loudspeaker cable, the active LS50 takes Jah Wobble’s bass notes lower with more abundant textural information and renders the cymbal work found parked at the back Bowie’s Blackstar as altogether smoother. Voices pop with a little more clarity. Furthermore, the LS50 Wireless give us a cleaner window from which to ‘view’ inner detail and layer separation.
This Peachtree powerhouse is a superb amplifier but it’s an off the shelf solution designed to meets the needs of many varied loudspeaker designs: electrostats, planars, high efficiency widebanders, low efficiency sealed boxes – the list goes on. Those tucked away inside the KEF cabinets aren’t so much ‘better’ as they are a better (read: precise) fit for the each driver’s load impedance.
The LS50 Wireless are for listeners who are happy to surrender amplification flexibility in the name of better sound…
…and to wipe away the expense of loudspeaker cable. As point of reference, this reviewer’s 6m pair of AudioQuest’s Rocket 88 sell for around a thousand bucks.
Also erased from the LS50 Wireless scene is the hifi rack – more effective and more handsome models often sell for as much as the LS50 Wireless themselves – US$2199 (+ sales tax) in the USA, €2298 inclusive of VAT in Europe, £2000 inclusive of VAT in the UK.
The LS50 Wireless are therefore for listeners who demand lower physical intrusion from their hi-fi system.
From the outset, the only additional purchase required by those of a more audiophile bent is a pair of loudspeaker stands. I use Atacama’s Nexus 6i. If I were to place them on a sideboard or IKEA Kallax, I’d opt for something from Canada’s ISOAcoustics – yes, they’ll make a big difference.
For even greater placement flexibility, a pair of switches on the master speaker’s rear panel allows us to DSP-tailor the LS50 Wireless’ output according to room placement: desktop or stands, free space or close to a wall. Such audible customisation recalls Dynaudio’s Xeo 2 but the KEFs are a far bigger sounding, more dynamic loudspeaker.
KEF’s Kent-based engineering team have also taken room tuning to the next level – much, much further than the Danes – with a corresponding smartphone app, available for iOS and Android.
Basic mode applies DSP customisation according to a real world multiple choice Q&A: about the LS50’s location (desk or stands); about the room size; about its acoustic make-up. Expert mode takes this DSP tweaking a step further and talks to audiophiles in terms of adding or subtracting decibel amounts to and from treble and lower frequencies.
Don’t worry about stuffing it up. A single button press returns us to factory default settings.
In my tests, I found different DSP settings preferable depending on placement: atop Atacama Nexus 6i stands or flanking a Samsung TV atop an IKEA Kallax unit. That makes the LS50 Wireless one of the few standmounts for which front wall proximity isn’t so much of an issue and for which proper stands are rendered less essential.
The smartphone app is also where we configure the crossover point/s and gain for a subwoofer attached to the back of the right hand speaker (should we have one) and where we turn off/on the DSP crossover phase correction (should we wish to).
The KEF LS50 Wireless are for people who live in the real world where listening rooms are often lounge rooms shared with others (and the TV); where loudspeakers can’t always be positioned well clear of front or side walls; where a parquet floor adds a zippy liveliness to sound; where heavy furnishings might over damp the vibe; where bass traps and acoustic panels would be an unwelcome visual intrusion (and expense).
Sat on the couch, a slim line remote control, colour matched to the speaker’s own two-tone scheme, takes the OLED touchscreen’s functionality – input selection, volume up/down – and adds play/pause and forward/next for UPnP LAN streaming.
Those who choose to translate KEF’s ‘Wireless’ nomenclature literally will be disappointed to learn that electricity still requires cables. Friendly jibe aside, KEF’s chosen name is confusing and perhaps runs the risk of customers misperceiving their new baby as some do Devialet’s Phantom: a fancy pair of Bluetooth speakers. These active LS50 are more front foot with vocals, better extended up top and less low slung and heavy in the bass than their more costly French rival. Not to mention a whole lot less expensive.
The ‘W’ word here refers to the aptX Bluetooth input but also to the WiFi LAN streaming input which, upon first use, requires the aforementioned smartphone app to hook the speakers into your wireless network. KEF call this process ‘onboarding’: essentially, your smartphone (or tablet) temporarily connects directly over WiFi to the LS50 Wireless in order to feed the speakers details of your home or office’s WiFi network, specifically SSID and password.
If that all sounds like too much hard work – or if your wifi network lacks the robustness, stability or bandwidth called for by lossless Redbook or hi-res LAN streaming – the option to hardwire the LS50 Wireless into a network over Ethernet also presents. Got drop-outs? Go Ethernet.
At time of writing, LAN streaming is UPnP only. Use the KEF app, or one of your choice, to control playback.
Let’s exemplify: I have my music stored on a hard-drive which is USB-connected to an Intel NUC. The Intel NUC is connected to my LAN via Ethernet. Plex is my UPnP server app of choice. The NUC’s role is to serve content from its kitchen location, over the network, to the KEF LS50 Wireless’ internal streamer. The LS50 Wireless sit in the lounge room. In case it is not already obvious, there is no direct connection between the UPnP server (the Intel NUC) and the UPnP endpoint (the LS50 Wireless). Completing this digital audio streaming triangle is the smartphone app – it tells the server what to send to the speakers and when.
Alas – black mark incoming – KEF have done little to elevate my enthusiasm for UPnP streaming despite its application to less conventional servers/sources. Like several other UPnP devices out in the wild, network streaming on the LS50 Wireless isn’t gapless. It bears repeating for the less technically minded that this affects not the KEFs’ other inputs – only the internal network streamer lacks gapless playback.
End users will either find workarounds (try Bubble UPnP for Android or JRiver) or do as I did and just move to Roon. Sometimes, it makes more sense to spend money more than it does time.
The triangular nature of our network audio configuration still applies to Roon: Roon runs on the Intel NUC as the Core (server) and sends audio over the network to a third party Roon Ready endpoint – one that’s connected directly to one of the LS50 Wireless’ digital inputs – as is instructed by the Roon smartphone/desktop app.
Roon Ready endpoints are available at different price points. Sonore microRendu (US$640) will feed the KEFs over USB. Others will prefer the financial prudence of the SonicOrbiter SE at US$299. For frugalphiles, a Gen 3 Apple TV or Airport Express provides Redbook-limited Roon Readiness but via TOSLINK for under US$100. In terms of sound quality, you get what you pay for – if you can afford it, get the microRendu. Add a linear power supply (to it) as funds allow.
Is the passive LS50’s amplifier lottery not why we hear some complain that they are too eager in the upper mids? Or too laid back? Or that you need to spend US$x000 on an amplifier to really make them sing. If nothing else, and to borrow from modern marketing parlance, this new active version allows us to the hear the LS50 as its engineers intended; and for a price that sits well below the cost of many amplifiers juicing the passive version out in the field.
Professional musicians and bedroom bangers cottoned onto active speakers years ago. You’d have to hunt seriously hard to locate a passive loudspeaker and an amplifier in your local DJ store.
That we also get smartphone app-based DSP customisation, Bluetooth, a network streamer and D/A conversion thrown into the bargain makes the LS50 Wireless a contender for bargain of the decade.
Hardware upgrades are limited to cables and loudspeaker stands. If you simply must have the flexibility to mix n’ match amplifiers and DACs at will, nothing stands in your way but your bank account.
Sure, the network streaming could be better (i.e. gapless) but even once the additional cost of a third party streamer is factored into the total cost of LS50 Wireless ownership, we’re still a long way ahead: no speaker cables or hifi rack required.
If we’ve learnt anything from companies like AURALiC, OPPO Digital and Devialet, we know that the software evolves over time. I’d urge KEF to talk to the guys at Roon at the earliest possible opportunity – the LS50 Wireless are screaming out to be Roon Readied. For more casual listeners, the addition of Spotify Connect would also be a terrific bonus.
Something for audiophiles, something for mainstreamers – after all, it’s in the LS50 Wireless’ DNA. As a straddler of worlds, the KEFs walk away not only with a Knockout Award but also DAR’s Product of the Year award for 2016. If this product doesn’t convince audiophiles of the legitimacy of active loudspeakers, nothing will.
Further information: KEF Audio
ACTIVE LOUDSPEAKERSKEFLS50 WIRELESS
【評測】KEF LS50 Wireless：一套完整的 Hi-Res 無線音響系統
KEF 在 50 周年推出的 LS50 書架喇叭相當受歡迎，所以今次最新推出無線、主動式新版 LS50 Wireless 也受到一定的矚目。除了加入 Wi-Fi、藍牙，亦都配備 DAC、單元獨立放大電路等等新設計，用料十足。不過價錢亦由原本 LS50 約一萬的價位，一口氣翻倍到差不多兩萬。究竟 LS50 Wireless 是否值得畀多一倍價錢去買？無線、主動式的設計，可否繼續保持 LS50 出色的表現呢？
延續 Uni-Q 同軸單元靚聲設計
LS50 Wireless 的外觀和設計基本上與 LS50 十分相似，配備了 KEF 的 Uni-Q 1 吋同軸鋁球頂高音、周圍則是 5.25 吋鋁鎂合金低音單元，弧形前障板更加完全一樣。除了這些靚聲元素之外，兩者的分別要在側面和後面先見到，機背設有 LAN、USB、光纖等接駁端子。另外，由於 LS50 Wireless 內部元件較多，喇叭會較為厚身，而且加入了散熱設計。機身有鈦金灰 / 暗紅 Uni-Q、鋼琴黑 / 冰藍 Uni-Q、鋼琴白 / 古銅 Uni-Q 共 3 種配色選擇，今次借到手測試的是鈦金灰 + 暗紅的組合，除了配色好型格之外，金屬質感亦都好正。
今次到手測試的是鈦金灰 + 暗紅配色的版本，相當有型，前面是 Uni-Q 1 吋同軸鋁球頂高音、配合 5.25 吋鋁鎂合金低音單元，和 LS50 一樣。
兼容多種接駁方式及 Hi-Res 播放
LS50 Wireless 的有線連接方式有 USB 、光纖以及 RCA Audio 輸入，而無線連接則有 2.4GHz/5GHz Wi-Fi 及藍牙 4.0 aptX。具備 24bit/192kHz DAC 功能，USB 可連接電腦輸出音效。而 LAN 或 Wi-Fi 的無線連接就支援 DLNA 功能，可以推送播歌之外，通過 KEF 自家將會一同推出的 iOS 及 Android App，亦可以串流播放手機、控制播放 NAS 等裝置上的 Hi-Res 音樂，不過 Wi-Fi 功能就並未兼容 AirPlay。App 本身可用作喇叭設定，也支援 Spotify 平台。USB 解碼方面就不支援 DSD，未算所有檔案通吃，不過對於主要聽 FLAC、WAV 的朋友就影響不太大。
右邊的主喇叭設有 USB、光纖、RCA Audio 等輸入，除了 Wi-Fi 之外，也支援 LAN 有線連接。背面還有座檯、靠牆等對應擺位的 EQ 設定按鈕，也可通過手機 App 設定。
除了電源連接之外，左喇叭的 LAN 端子用作連接右邊的主喇叭，設有左右聲道平衡旋鈕，正常情況下置中就 OK。
LS50 Wireless 內置的 4 組 Hi-Fi 級 DAC，分別對應 2 對高音及 2 對中低音，全部兼容 24bit/192kHz 音訊，而且配備了 KEF 新設計的「Time-Correcting」DSP Crossover 技術，令音訊可以處理得更準確。放大電路亦落足料，高音單元以 30W Class AB 驅動、中低音單元則以 200W Class D 驅動。分主副喇叭設計，兩者以 LAN 線連接。右喇叭為主喇叭，頂部設有輕觸式按鈕操作，本身也會附送跟喇叭同樣配色的遙控器，一套過相當靚仔。
兩隻喇叭都要獨立接駁電源，背面備有低音反射孔，右邊的主喇叭元件多一點，比左喇叭稍重 0.2 kg。
LS50 Wireless 的接駁方式：有線、無線多元化，獨缺 AirPlay
- USB Type B（連接電腦作為 DAC）
- RCA Audio
- 藍牙 4.0 aptX
以上就是 LS50 Wireless 的連接方式，可算十分多元化，當中值得一提的是 LAN / Wi-Fi 的網絡連接，除了可以通過 KEF 自家 App（包括 Android、iOS、Windows 及 Mac 平台）串流 NAS 等裝置上的音樂播歌之外，由於也支援 DLNA 功能，可以通過 Windows 的「Play-To」或者 Android 或 iOS 上支援 UPnP 的播放 App 控制串流播歌，算是幾方便。不過網絡功能就並未支援 AirPlay 或者 GoogleCast，兼容性未算極之完整，不過始於有各種平台 App 可用，問題亦不算大，只是部分用家要改變下使用習慣。
Android App 的操控及設定：功能幾全面、亦夠易用
今次就用尚未正式推出的 LS50 Wireless Android App 做測試，介面算是易用，除了手機上的音樂，也可以播放 NAS 等 Media Server 上的音樂，支援 Hi-Res 檔案播放，串流服務就支援 Spotify，如果日後可以加埋 TIDAL 甚至 MOOV 等更多平台就更好。
手機 App 會有一步一步的指示讓用家連接到 LS50 Wireless，跟住做好易連接到，當然，有 NFC 的話就更好。
App 選單部分有曲庫、播放清單等本地播放項目，亦支援 Media Server 以及 Spotify 串流播放，日後可以加埋 TIDAL 等其他常見平台就更好。
每對連接好的喇叭可以在 App 上顯示並獨立進行設定，Basic 設定內提供了基本 EQ 設置，而且只是讓用家輸入擺位情況，相當易用。
LS50 Wireless 一開聲的第一個感覺，就是能量很澎湃，60% 音量對百幾尺空間音壓已經好強。第二個感覺就是，新型號果然延續了 LS50 的特性，分析力不俗、細節充足，聽 Sukie 的〈漣漪〉、Eagles 的〈Hotel California〉24bit/96kHz FLAC，由斯文甜美聲到粗獷磁性聲，結像都相當出色、人聲好立體。特別聽〈最愛是誰〉尾段，結他、小提琴、人聲同鼓聲混合，一點也不覺亂、層次感相當好。低頻飽滿而富有彈性，自己就覺得低音厚實了少少，不過喜歡 KEF 聲底的朋友應該會好滿意。
播 NAS 上的 Sukie 的〈最愛是誰〉24bit/96kHz FLAC，可以顯示 album art，不過就見不到檔案 bitrate 等資訊。
值得一提的是 LS50 Wireless 箱身極之厚重結實，聽澎湃的管弦樂合奏、或者方大同〈聽〉之類鼓聲節奏很重的樂曲時，箱身依然紋風不動，完全無諧振的干擾，所以低頻的分析力亦都保持得不錯，反而是中頻人聲會有少少受到影響。另外，可能由於箱身的設計和物料，喇叭對金屬的共鳴感呈現得好好，表現結他、小提琴，或者其他弦樂樂器時質感一流。
USB DAC、Wi-Fi 最好聲
除了用 App 播歌之外，今次亦試了光纖輸入、USB 解碼以及 DLNA 播放，當中以 USB 以及網絡形式播歌表現最好。就算光纖輸入，播放一些 Hi-Res 音樂時細緻度仍會稍稍弱一點。直接聽未必察覺，不過 A/B 比較之下都聽得出分別。當中以 USB DAC 播放的分析力甚至比網絡播放再好一點，比起以前試聽的 LS50，雖然配套的器材同訊源不同、不能直接比較，但感覺上音樂細節呈現得再好一點、低音就稍為厚實少少。特別為這個無線、主動式版本而設的 DAC 以及放大電路在處理以及調聲方面的確有啲料到。
DLNA 功能播歌其實幾方便，可以用 Windows Media Player 的 Play-to 功能串流控制播放，又或者 Android、iOS 上支援 UPnP 的播歌 App 播放，當然有埋 AirPlay、GoogleCast 就更好。
臨還機前一日先有得下載的 Windows 驅動程式，Mac 就無需 driver 就可以直接連接 USB 使用。
裝好驅動程式之後，LS50 Wireless 就可以當作電腦的外置喇叭使用，除了用 App 播歌之外，平時睇戲、睇 YouTube 等都可以用佢出聲。
用 USB DAC 方式播歌，感覺上比 Wi-Fi / DLNA 播放分析力再好少少。
Speaker EQ 調出個人化口味
LS50 Wireless 喇叭背面有得揀座檯或擺喇叭架、靠牆或擺空曠位，自動因應情況調聲，而 App 內就有更詳盡的高低音設置。不過就發現，如果跟足擺位情況，例如喇叭離牆 20cm 之類的參數準確輸入的話，人聲會離得稍遠、中低頻亦會稍為薄聲少少。將喇叭擺位設定當作較遠、設置房間吸音較強的話，人聲會突出好多、中低音的空間感亦立即增強，利用這種方式就調到自己很喜歡的聲底。而通過這種方式微調，相信大家亦不難調節到啱自己口味的音效。
LS50 Wireless 處理一些大動態的管弦樂和鋼琴合奏時，可以完全呈現到那種澎湃同力量感。在「標準」設定下，中低頻會稍薄聲，不過通過 EQ 設定就可以輕易有個大提升。
KEF LS50 Wireless 不止是一對主動式喇叭，配合一部手機就已經是一套完整的無線 Hi-Fi 系統，而且 DAC、放大電路等更是特別為 LS50 的單元及音箱而設，貴多八、九千元就在於這些訂製元件以及各種無線功能。好處當然是所有元件配合得更加得心應手、將潛力發揮到最大。缺點就是少了器材配搭調聲的靈活性，不過這方面可以通過 EQ 調節補足。
事實上 LS50 Wireless 不算大型書架喇叭，不過能量就相當之強，處理搖滾、管弦樂合奏等大動態音樂游刃有餘、勁度十足；呈現發燒人聲、結他、小提琴等靜態音樂則細緻而富音樂感。對於喜歡 KEF 聲底、想簡化音響系統的朋友，LS50 Wireless 的表現相信不會令人失望。