KEF LS50 Meta
Successors of the LS50, the KEF LS50 Meta speakers are passive bookshelf acoustic systems that feature the company's innovative solution - Metamaterial Absorption Technology (MAT). This very technology is also applied in the wireless KEF LS50 Wireless II.@@The Uni-Q driver together with MAT
The KEF LS50 Meta is a passive two-way studio monitor speaker equipped with the 12th generation Uni-Q coaxial driver and a MAT (Metamaterial Absorption Technology) disc located behind the driver, which absorbs backwave radiation. The sound will be very accurate and detailed from any point in the room.
This new driver array provides reduced coloration, lower distortion, and highly detailed and natural sound reproduction, surpassing what was previously possible, while evenly distributing the sound throughout the room. The Uni-Q driver for the KEF LS50 Meta was developed based on the Uni-Q used in the KEF R series with modifications to accommodate the system's design. The addition of MAT technology required significant changes to the driver's construction, allowing for improvements in technologies such as tweeter tube damping.
Since the R series speakers consist of a 3-way design, and the LS50 Meta is a 2-way speaker system, the midrange driver had to cover a much wider frequency range, including low frequencies. While it is well-suited for integration into the system, it still poses performance challenges. Therefore, KEF engineers made a series of changes to the magnet system, suspension, and cone of the midrange driver to achieve maximum smooth operation.
Metamaterials
The Absorbing Metamaterial (MAT) technology was developed by KEF engineers in collaboration with the Hong Kong-based company Acoustic Metamaterials Group. Metamaterials allow for the absorption of almost all sound energy from the rear side of the speaker, while occupying minimal space in the acoustic system's enclosure.
KEF's MAT technology involves the use of a special labyrinth-like structure, where each segment absorbs sound in a specific frequency range and behaves like an "acoustic black hole," collectively absorbing 99% of unwanted sound energy, whereas traditional absorbers like polyester only provide 60% absorption.
Construction
The construction of the KEF LS50 Meta enclosure is identical to the original LS50 speakers. However, there are a few changes in the rear part of the enclosure to improve performance and aesthetics. The speakers can be placed on any flat surface or on the matching KEF S2 stands, which perfectly complement the size and color of the acoustic systems.
Specifications:
- Design: two-way with a phase inverter
- HF driver: 25mm (1-inch) ventilated dome driver with aluminum diaphragm
- MF driver: 130mm (5.25-inch) driver with magnesium-aluminum alloy diaphragm
- Frequency response (-6 dB): 47 Hz - 45 kHz
- Frequency response (±3 dB): 79 Hz - 28 kHz
- Crossover frequency: 2.1 kHz
- Recommended amplifier power: 40 - 100 W
- Sensitivity (2.83V / 1m): 85 dB
- Nominal impedance: 8 Ohms (minimum 3.2 Ohms)
- Maximum sound pressure level: 106 dB
- Dimensions: 302 x 200 x 278 mm
- Weight: 7.8 kg
Package includes:
- Speakers
- Documentation
Eversolo Play
Whether you're a passionate music enthusiast or an audiophile, the Eversolo Play will elevate your listening journey, becoming an indispensable part of your musical lifestyle.
Key Features:
- DAC: AK4493SEQ, SNR ≥ 109 dB, THD < 0.0037%
- Amplifier: two 60 W @ 8 Ω, two 110 W @ 4 Ω
- Streaming: Roon Ready, TIDAL / Qobuz Connect, UPnP / WebDAV
- Connections: HDMI ARC, Phono MM/MC, Sub Out, USB Audio Out (DSD512 / PCM 768 kHz)
- Integrated multiroom & room correction
- 5.5″ touchscreen + app (Apple iOS / Google Android)
- CNC aluminum housing
- Playback and decoding: up to DSD512 and PCM 768KHz/32-bit
- Storage: 4GB DDR4 +32GB eMMC
- USB ports: USB 3.0 x 2
- Ethernet: RJ-45 (10/100/1,000Mbps)
- Wi-Fi: 2.4G and 5G dual bands
- Music file formats: DSD (DSF, DFF, SACD ISO Support DST up to DSD512), MP3, APE, WAV, FLAC, AIF, AIFF, AAC, NRG, CUE
Music Streaming Without Boundaries
Play series deeply integrates with TIDAL, Qobuz, IDAGIO, Amazon Music, TuneIn Radio, Presto Music, KKBOX, Radio Paradise, Deezer, and other leading platforms, enabling high-res lossless audio playback without additional devices.
Streaming Lossless Music
Supports streaming protocols such as Roon Ready, Qobuz Connect, TIDAL Connect, and JPLAY CERTIFIED, enabling real-time track streaming via streaming services. Access tens of millions of tracks instantly—play anytime with a click!
Eversolo Control
The highly acclaimed Eversolo Control welcomes a brand-new update, featuring a fresh visual style and more user-friendly operation methods. Supporting iOS, Android, and iPad devices, it offers multi-device compatibility for effortlessly controlling Eversolo Play.
Robust LAN & Cloud Integration
Play series delivers robust LAN and cloud storage compatibility, enabling seamless access to home computers and local NAS via LAN while supporting protocols like UPnP and WebDAV. Experience lightning-fast access to personal history favorites and build an all-new curated local music library.
Multi-Room System
Eversolo multi-room system seamlessly interconnects multiple devices, delivering synchronized music to every space - truly transcending physical boundaries and embodying the concept of "music without boundaries". Whether you're in the living room, study, or bedroom, a single tap immerses the entire home in synchronized melodies, creating a immersive high-fidelity listening experience.
Cross-Platform Multi-Device Interaction
Quickly connect various Eversolo Plays via the mobile app, effortlessly adjust playback tracks and volume across devices. Seamless control, your music moves with your emotions.
WOL Network Wakeup Support
Empowers play with "on-demand readiness" intelligence, enabling remote wake-up of sleep/shutdown-state devices via LAN to balance efficient management and energy conservation.
Listen at Will
The "Listen at Will" feature of Play can automatically play randomly recommended tracks from both logged-in music services and your local music library, breaking away from the fixed styles of algorithmic recommendations to fill your music journey with surprises.
Room Correction
Enables acoustic correction via an external measurement microphone or smartphone microphone, automatically detecting large living rooms and compact bedrooms. Intelligently eliminates environmental reflections to deliver flawless music immersion in every space.
Aluminum Alloy Body
Crafted with CNC-machined unibody construction and high-strength aluminum alloy, it enhances structural rigidity, effectively shields against external electromagnetic interference, ensures pristine audio signal transmission, while showcasing master-level precision craftsmanship.
Full-Coverage Heat Sink
The bottom of Play series features an extensive thermal design with a large-area heat sink, effectively reducing internal electronic component temperatures and ensuring circuit board and chip stability. Every product detail is meticulously crafted for an uncompromised lossless music experience.
5.5-inch Vibrant Screen with All-New UX Interaction
A 5.5-inch HD large display featuring a all-new UI interface ensures intuitive and smooth operation, with clear playlist visibility. From browsing your music library to switching playback modes, everything is within easy reach, making your music experience more convenient and immersive.
Vibrant RGB Light Ring
Play series features a RGB light ring supporting seamless color switching: vibrant orange for Rock, serene blue for Blues, deep green for Country... transforming intangible melodies into visible lightscapes.
Bring Music to Life
Featuring retro dynamic VU meters and dynamic spectrum, Play series visually tracks musical rhythms, unlocking immersive experiences.
PFC + LLC Power Supply
The optimal PFC-LLC configuration minimizes energy waste and reduces thermal loss. Incorporates NTC thermistors for temperature monitoring and overheat protection, suppressing inrush current at startup to safeguard amplifier.
High-Performance Class D Amplifier
Utilizing PurePath™ Ultra HD technology and advanced integrated feedback design with high-speed gate driver error-correction capability, this system achieves ultra-low distortion across the entire audio frequency range. Delivering robust power outputs of 60W (8Ω) and 110W (4Ω), it effortlessly drives various bookshelf speakers.
Multi-Band Professional EQ
Play series features a built-in 15-band graphic EQ and 10-band parametric EQ, supporting independent left/right channel adjustment. With 23 genre presets (including EDM, blues, classical, and jazz), it enables one-touch audio customization to craft your sound experience.
Smart Bass Management
Integrates intelligent bass control allowing precise crossover frequency and phase alignment. Enhances low-frequency articulation while ensuring seamless subwoofer-to-main speaker integration, delivering balanced sound.
DAC AK4493SEQ
The Play series incorporates AKM's premium 32-bit DAC AK4493SEQ, leveraging VELVETSOUND™ technology to dramatically lower harmonic distortion and noise during signal processing. The chip supports a wider dynamic range, enabling the device to accurately reproduce audio dynamics from subtle details to powerful impacts, immersing you in a live-performance experience.
Extensive Format Support
Play series supports a wide range of high-fidelity music formats, including DSD, FLAC, APE, and WAV. USB audio output supports up to DSD512 and PCM 768kHz.
Multi-core ARM Streaming Module
A hardware module based on a high-performance multi-core ARM architecture, specifically optimized for streaming media scenarios. Integrated capabilities include codec processing, network transmission, and support for real-time audio processing and distribution.
SPEAKER OUTPUT
Supports direct connection to speakers and expand your sound system.
HDMI ARC
Connect via HDMI ARC to your TV, transmitting hi-fi audio without extra cables, elevating your home entertainment experience.
OPTICAL IN & COAXIAL IN
High-quality digital audio input, compatible with CD players, digital players, and other devices, delivering lossless audio quality.
MM/MC PHONO Input
Compatible with MM and MC turntables, providing high-quality phono inputs to seamlessly integrate classic analog sound into your HiFi system.
SUB OUT
Dedicated subwoofer output designed specifically for bass enhancement, delivering more impactful music experiences.
GIGABIT LAN & USB3.0
Stable Gigabit Ethernet port and high-speed USB 3.0 connections are provided to ensure smooth transmission of high-bitrate music files with minimized latency.
USB3.0 OTG high-speed interface
Connect your external portable hard drive to a high-speed USB 3.0 port via USB cable to expand your music library. Enjoy instant access and playback through the high-speed interface - no waiting required.
USB AUDIO OUT
Full support for stereo DSD512 Native and PCM 768kHz/32Bit ultra-flagship audio specifications, strictly compliant with USB Audio Class (UAC) protocol standards, delivering pure digital audio streams for professional DAC devices.
In the Box:
- Streaming Amplifier;
- POwer Cable;
- Manual
