马克莱文森Mark Levinson NO519 数字音响播放器 CD播放器

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马克莱文森和哈曼卡顿同属哈曼国际，是哈曼国际旗下最高端的HIEND品牌之一。主要生产顶级功放、音响、转盘、解码器等顶级音频设备，主要面对顶级发烧友、专业剧院和其他顶级音乐工作室一类的专业音频人士，产品价格非常高昂起步价3W+，是无数音响发烧友梦寐以求的顶级设备。

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Mark Levinson NO519 数字音响播放器

Mark Levinson № 519是一台完整的，现代的数字音响播放器，非常适合现在的音乐爱好者。 它融合了无线和有线输入并有一个CD播放器，并且支持USB连接口，可以U盘直接插入播放，有更多的数字输入方式，无线蓝牙, aptx, 也支持HARMAN Clari-Fi®音乐恢复技术; 这些模式都可以是没有压缩的无损模式，是Mark Levinson特色保证纯正音效的方式，主机使用6000系列铝制机箱。 № 519 拥有一个大型全彩TFT显示屏, 带有一个专属配套的遥控器，可以用苹果系统或Android系统的apps操作控制，也可以通过所有主流的网络浏览器控制， 主机系统集成了RS-232, IP地址控制以及更多控制方式。和所有其他Mark Levinson的产品一样，№ 519是在美国原装设计和生产的。

Mark Levinson 纯正路径（Pure Path）线路设计

源自1972年, Mark Levinson已经全力投入到声音的艺术事业当中，把音乐的纯正高于一切作为指导原则. 为了达成这个目标，Mark Levinson的工程师从公司的研究资料库当中，最终提炼出了一个线路设计的方式，叫作纯正路径（Pure Path）. 在概念层面上，其标志性原理包括一个独立的，直接耦合的，完全平衡的双单声道信号路径，可提供无限制的，无与伦比的声音纯度。

纯正路径（Pure Path）不仅仅是以智能的方式安排高质量的组件，它还是科学与艺术的交汇点：Mark Levinson工程师的任务是创造出最好的测试表现和实际表现。 引用阿尔伯特爱因斯坦的话：“一切都应该尽可能简单，但并不是简单的简化。”

№519中的纯正路径（Pure Path）的亮点包括折叠级联，备受赞誉的Mark Levinson 精密连接DAC和主驱动器耳机放大器输出。

Stream, Spin, Connect

The № 519 ushers in a new generation of music access and enjoyment with Mark Levinson. Far from merely a network player, the № 519 is a complex, yet easy-to-master unit containing a complete, embedded Precision Stream Linux® computer running a custom Mark Levinson version of the operating system to deliver outstanding headroom for flawless performance, regardless of configuration.

In addition to its ability to browse, access, and play music from a variety of connected sources, the № 519 is also a complete Mark Levinson digital preamplifier and DAC, which is able to directly connect to amplifiers or active loudspeakers without need for a preamplifier for those seeking to create a concise music system.

The № 519 plays from network-connected devices and drives including NAS, using its Ethernet wired and Wi-Fi wireless connections. It contains a slot-loading disc drive for enjoying disc collections of standard Redbook and MP3 compact discs. A full complement of digital inputs enables connection of external digital music sources, including an asynchronous USB connection for streaming high-resolution PCM, DSD, FLAC, ALAC, WAV, MP3, AAC, WMA, OGG, APE, AIFF, and WMV files from computers; and a Bluetooth receiver with the aptX AAC high-quality codec enables convenient, instant wireless music connection from virtually any handheld, tablet, or computing device. Two additional USB ports enable local connection of hard drives and thumb drives. With all of these methods for accessing and playing music, the № 519 is truly the music player the world has been waiting for.

In addition to robust support for virtually all methods of playing music from local and networked sources, the № 519’s Precision Stream also contains a wide range of embedded streaming music services. Built-in Spotify Connect, Tidal, Qobuz, Deezer, Rhapsody/Napster, plus thousands of internet radio stations and podcasts deliver hundreds of millions of tracks in standard and even high-resolution formats, on demand*. And because the № 519’s Precision Stream is a powerful internet-connected computer built on a 1GHz ARM® Cortex® multicore 32‑bit processor with 4GB each of RAM and flash, its feature and content portfolios will continue to grow over time. Mark Levinson is committed to delivering continued feature and content expansion over the player’s lifespan. The № 519 is updateable over its network connection, and by inserting a USB drive containing software updates – a familiar and intuitive process that has been painstakingly crafted to be easy to understand and complete.

Analog Mastery: The Folded Cascode

Mark Levinson components are designed around a Pure Path amplifier circuit concept that makes heavy use of a circuit design element called a cascode. Originally created for improving the bandwidth of vacuum tube circuits in radios, Mark Levinson engineers deploy cascodes in Pure Path circuit designs to both improve bandwidth and enhance linearity. A cascode combines two transistors so that they operate as a single composite device that functions like a single transistor, using the wanted characteristics of each component transistor, and rejecting the unwanted characteristics.

Mark Levinson engineers began their design of the gain stage with pairs of JFETs (junction field-effect transistors), chosen for their low noise and high gain. JFETs achieve these characteristics in part by being large, and with their large size comes nonlinear gain – or distortion. To mitigate this, BJTs (bipolar junction transistors) were added to the circuit. The BJTs exhibit very low input impedance and very high output impedance, which translates to excellent bandwidth and linearity. By creating a cascode of the JFETs and BJTs, they created a design with the best characteristics of both sets of devices.

Engineers than connected the output of the cascode to another transistor of the opposite “gender.” Current flows through it in the opposite direction to “turn around” the direction of the signal current. This special connection is called a Folded Cascode and it is a hallmark of the Pure Path circuit: high gain with low noise, wide bandwidth, and excellent linearity.

Military Grade Components

All Mark Levinson equipment employs electronic components carefully chosen for their specific task. Gain-stage JFET pairs have high gain, low noise, low distortion, and because they are encapsulated in the same package, the two devices operate under nearly identical conditions. Capacitors used in critical filtering locations are film types, noted for their consistent performance regardless of temperature and frequency. Finally, resistors in critical gain-setting and feedback locations use tantalum nitride thin-film elements. An extremely costly material, tantalum nitride typically finds use in sensitive military equipment because it is unusually stable with respect to temperature, exhibits very low noise, and is unaffected by magnetic fields. In fine audio equipment, those characteristics make the sound even more revealing and effortless, free of the low-level nonlinearities caused by lesser resistive materials as they heat and cool under dynamic conditions. Housed in an aircraft-grade 6063-T5 extruded and machined aluminum chassis, the № 519 features extremely high build precision, to exceedingly low tolerances.

The Mark Levinson Precision Link DAC

First introduced in the multi-award-winning, critically acclaimed № 585 Integrated Amplifier, the Mark Levinson Precision Link DAC transforms digital data streams into analog audio art. Like every other element of a Mark Levinson component, it combines unique Pure Path engineering design approaches with painstakingly selected components to deliver impeccable performance than can be appreciated both on the test bench and in the listening room.

The converter chip in the Mark Levinson Precision Link DAC comes from ESS Technologies, a company known for jitter-elimination circuitry. Jitter – inaccuracies in the timing of samples arriving to the converter – causes distortion. The ESS converter resynchronizes incoming data to its own extraordinarily stable clock. Combined with its 32-bit resolution, the low-jitter stream reduces distortion and noise, allowing remarkable retrieval of ambient detail that other DACs simply miss.

The Precision Link DAC operates the converter’s outputs in current mode, where they are fed into a fully balanced current-to-voltage (I/V) converter that provides the exact signal level desired. Maintaining near-zero voltage keeps the current sources virtually immune to nonlinearity, maximizing bandwidth and minimizing distortion. Common-mode noise and distortion are cancelled in this mirror-imaged, differential configuration, resulting in a pristine signal with a vanishingly low noise floor.

Also contributing to the Mark Levinson Precision Link DAC’s low noise floor is its unique power supply configuration: five independent power supplies operate the converter chip alone, and individual linear power supplies for the left and right channels power the discrete I/V and antialiasing filter circuits.

Personalized Performance with Precision Link DAC Filters

The Precision Link DAC performs oversampling and digital filtering of digital audio data. This process increases the effective sample rate by filling in additional data points between the actual data present, which in turn reduces the demands on the low-pass (antialiasing) filter required on the analog output of the converter.

Three digital filter options are available in the Mark Levinson Precision Link DAC.

• The Fast filter has a steep roll-off for maximum attenuation of unwanted high frequency information. It offers the best noise and distortion measurements.
• The Slow filter has a gentler roll-off of high frequencies and exhibits less pre- and post-ringing on transients.
• The Minimum Phase filter has a steep roll-off of high frequencies. Unlike the other two, it exhibits only post-ringing on transients.

Music is made up of many transients; ringing after the transient is usually masked by the natural decay of the transient sound – think of the initial snap of a drumstick on a snare drum head, followed by vibration of the drum shell, drumheads, and snare wires.

These filters are selectable because there is no one correct filter choice. Some listeners are sensitive to pre-ringing on transients and believe it sounds unnatural. A digital filter with pre-ringing exhibits excellent frequency response behavior precisely because of its transient behavior. Other listeners might be more sensitive to the relatively long period of ringing exhibited by the Minimum Phase filter and therefore would prefer the Fast or Slow filter. More likely, though, is that listeners will prefer different filters with different genres of music, and they have that option with the № 519.

An Array of Pure Path Digital Inputs

The № 519 offers six digital inputs for system flexibility. One Balanced AES/EBU (XLR) input and two Coaxial (RCA) inputs use high-speed differential receivers to reject noise and provide clean digital waveforms to the Cirrus Logic digital audio receiver chip. Two additional Optical (Toslink) receivers drive the digital audio receiver directly. For direct connection to a computer, the № 519 also offers an asynchronous USB Type B input built around a CMedia USB audio processor chip. Using the high-speed USB 2.0 standard, the CMedia chip reliably and accurately receives audio data over USB in PCM format at up to 32-bit, 192 kHz; or in native DSD format at up to double speed (5.6 MHz). The CMedia chip transfers USB data asynchronously: it gets as much data as possible as and when it is available, rather than transferring the data in sync with the music playback, which reduces demands on the computer and instead allows the processor chip to precisely control the flow of data to the digital-to-analog converter.

HARMAN Clari-Fi® Music Restoration Technology

HARMAN Clari-Fi music restoration technology analyzes compressed digital audio files during playback, in real time, and reconstructs much of what was lost in the compression process. The complex Clari-Fi processing algorithm is implemented on a powerful Analog Devices SHARC DSP (digital signal processor). Unlike simple equalization, Clari-Fi continuously and automatically adapts the amount of reconstruction it performs to the degree to which an audio file has been compressed. The № 519 offers an Intensity control, enabling fine adjustment of the amount of reconstruction applied to the signal – or bypass if preferred.

Completing the Signal Path

The № 519 delivers its signal to balanced (XLR) and single-ended (RCA) stereo analog outputs, as well as a 1/4-inch (6.3mm) Main Drive Headphone output integrated into the front panel metalwork – a first for Mark Levinson.

The Main Drive Headphone amplifier circuit drives up to 32-ohm headphones in class A by employing the main output circuit rather than a secondary signal path: a perfect example of reducing clutter in the circuit design.

A selectable fourth-order, 80 Hz high-pass filter enables seamless integration of a single or dual subwoofers for full-range performance with a wide range of loudspeaker setups.

In addition to its analog outputs, the № 519 also offers three digital output connectors – balanced (AES/EBU), coaxial (RCA), and optical (Toslink) – for direct connection to separate DACs preamplifiers with internal DACs, and other components with digital inputs.

Equally Flexible, Beautiful Control

With so many connections and capabilities, the № 519 requires a beautiful, easy-to-understand control interface. To create a best-in-class user experience, designers started with a large five-inch, full-color TFT front-panel display flanked by eight aluminum buttons and the iconic Mark Levinson twin-knob controls. Following a series of design studies, designers created a gorgeous design style for all states and modes, that suits the № 519’s place within Mark Levinson systems, yet looks to the future in terms of detail and resolution. And thanks to its powerful [Name TBD] embedded Linux computer, the № 519’s display is always quick and responsive.

In addition to its front-panel control and display, the № 519 also features matching iOS and Android apps for remote control from virtually any smartphone, tablet, or other device running the world’s most popular mobile computing platforms. Additionally, the № 519 can be controlled from any major web browser on laptop and desktop computers thanks to its matching webpage interface.

System-integration connectivity includes Ethernet/IP control, RS-232, plus 12V triggers and an IR input. An included machined metal remote delivers the robust feel and precise control befitting of a component of the № 519’s caliber

Designed and Handcrafted in the USA

Like all Mark Levinson equipment, the № 519 is proudly designed and handcrafted in the USA. A dedicated Engineering Center of Excellence in Shelton, CT houses Mark Levinson engineering and product development, just a state away from small-batch production at Mack Technologies in Westford, MA by a team of craftsmen who bring all Mark Levinson equipment to life.

Features:

• Pure Path discrete, direct coupled, fully balanced, dual-monaural signal path
• Plays up to 32-bit, 192kHz PCM, double-speed DSD, CD, and virtually all two-channel formats
• Six high-resolution digital inputs: balanced, coaxial, optical, and USB asynchronous
• Plays from networked drives and devices, streaming services, Bluetooth, and connected media
• Spotify, Tidal, Qobuz, Deezer, Rhapsody/Napster, internet radio, and podcasts built in*
• Analog output volume control for direct connection to amplifiers or active loudspeakers
• 32-bit Precision Link DAC with three selectable filters and seven power supplies
• Class-A Main Drive Headphone output for up to 32-ohm headphones using main circuit
• Designed and handcrafted in the USA

Specifications:

• DAC Output Voltage @ Full Scale (0DBFS): 3.7VRMS
• DAC Frequency Response: 20Hz to 20kHz, +0 / ¬–0.2dB
• DAC THD, Full Scale (0DBFS): <0.0001% @ 1kHz, <0.0003% @ 20kHz
• DAC SNR (Referred To 3.7VRMS / 0DBFS Output): >120dB (A-weighted)
• PCM Sample Rates/Bit Depth: 32, 44.1, 48, 88.2, 96, 176.4, or 192kHz; up to 32 bits
• DSD: Native or DoP (DSD over PCM), single- and double-speed (2.8 and 5.6MHz)
• Processor: 1GHz ARM Cortex A8 Sitara
• Memory: 4GB RAM and 4GB Flash
• Digital Inputs: 1 balanced (XLR); 2 coaxial (RCA); 2 optical (Toslink); 1 USB-B asynchronous
• Mass Storage Connectors: 2 USB type A
• Analog Outputs: 1 balanced (XLR); 1 pair single-ended (RCA), 1 headphone (¼”, 6.3mm TS)
• Digital Outputs: 1 balanced (XLR); 1 single-ended (RCA), 1 optical (Toslink)
• Control Connectors: Ethernet (RJ45), RS-232 (RJ12), Trigger In and Out, IR In, USB-A, Mini USB
• Network: Ethernet, Wi-Fi 802.11b/g/n
• Mains Voltage: 100VAC, 115VAC, or 230VAC, factory set
• Software Update: Network, USB
• Control Apps: iOS, Android, web browser

运输重量:

• 约: 15磅 

关于保修:

• 厂家承诺保修期 (授权网路经销商): 5年有限保障
• 注意：100outlets.com 不是厂家授权的经销商，不能保证买家可以免费享受厂家的保修. 产品来自上海海关罚没物资拍卖会。